Result.html 57 KB

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  1. <!DOCTYPE html>
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  4. <title>Result Enumeration Reference</title>
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  45. Result Enumeration Reference
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  57. <a class="nav-group-task-link" href="../Classes/DownloadRequest.html">DownloadRequest</a>
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  60. <a class="nav-group-task-link" href="../Classes/DownloadRequest/DownloadOptions.html">– DownloadOptions</a>
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  162. <a class="nav-group-task-link" href="../Functions.html#/s:9Alamofire2eeoiSbAA26NetworkReachabilityManagerC0cD6StatusO_AFtF">==(_:_:)</a>
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  165. <a class="nav-group-task-link" href="../Functions.html#/s:9Alamofire8downloadAA15DownloadRequestCAA14URLConvertible_p_AA10HTTPMethodO6methods10DictionaryVySSypGSg10parametersAA17ParameterEncoding_p8encodingAJyS2SGSg7headers10Foundation3URLV011destinationO0_AD0C7OptionsV7optionstAU_So15HTTPURLResponseCtcSg2totF">download(_:method:parameters:encoding:headers:to:)</a>
  166. </li>
  167. <li class="nav-group-task">
  168. <a class="nav-group-task-link" href="../Functions.html#/s:9Alamofire8downloadAA15DownloadRequestCAA21URLRequestConvertible_p_10Foundation3URLV011destinationH0_AD0C7OptionsV7optionstAH_So15HTTPURLResponseCtcSg2totF">download(_:to:)</a>
  169. </li>
  170. <li class="nav-group-task">
  171. <a class="nav-group-task-link" href="../Functions.html#/s:9Alamofire8downloadAA15DownloadRequestC10Foundation4DataV12resumingWith_AE3URLV011destinationI0_AD0C7OptionsV7optionstAJ_So15HTTPURLResponseCtcSg2totF">download(resumingWith:to:)</a>
  172. </li>
  173. <li class="nav-group-task">
  174. <a class="nav-group-task-link" href="../Functions.html#/s:9Alamofire7requestAA11DataRequestCAA21URLRequestConvertible_pF">request(_:)</a>
  175. </li>
  176. <li class="nav-group-task">
  177. <a class="nav-group-task-link" href="../Functions.html#/s:9Alamofire7requestAA11DataRequestCAA14URLConvertible_p_AA10HTTPMethodO6methods10DictionaryVySSypGSg10parametersAA17ParameterEncoding_p8encodingAJyS2SGSg7headerstF">request(_:method:parameters:encoding:headers:)</a>
  178. </li>
  179. <li class="nav-group-task">
  180. <a class="nav-group-task-link" href="../Functions.html#/s:9Alamofire6streamAA13StreamRequestCSo10NetServiceC4with_tF">stream(with:)</a>
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  182. <li class="nav-group-task">
  183. <a class="nav-group-task-link" href="../Functions.html#/s:9Alamofire6streamAA13StreamRequestCSS12withHostName_Si4porttF">stream(withHostName:port:)</a>
  184. </li>
  185. <li class="nav-group-task">
  186. <a class="nav-group-task-link" href="../Functions.html#/s:9Alamofire6uploadAA13UploadRequestC10Foundation3URLV_AA14URLConvertible_p2toAA10HTTPMethodO6methods10DictionaryVyS2SGSg7headerstF">upload(_:to:method:headers:)</a>
  187. </li>
  188. <li class="nav-group-task">
  189. <a class="nav-group-task-link" href="../Functions.html#/s:9Alamofire6uploadAA13UploadRequestC10Foundation4DataV_AA14URLConvertible_p2toAA10HTTPMethodO6methods10DictionaryVyS2SGSg7headerstF">upload(_:to:method:headers:)</a>
  190. </li>
  191. <li class="nav-group-task">
  192. <a class="nav-group-task-link" href="../Functions.html#/s:9Alamofire6uploadAA13UploadRequestCSo11InputStreamC_AA14URLConvertible_p2toAA10HTTPMethodO6methods10DictionaryVyS2SGSg7headerstF">upload(_:to:method:headers:)</a>
  193. </li>
  194. <li class="nav-group-task">
  195. <a class="nav-group-task-link" href="../Functions.html#/s:9Alamofire6uploadAA13UploadRequestC10Foundation3URLV_AA21URLRequestConvertible_p4withtF">upload(_:with:)</a>
  196. </li>
  197. <li class="nav-group-task">
  198. <a class="nav-group-task-link" href="../Functions.html#/s:9Alamofire6uploadAA13UploadRequestC10Foundation4DataV_AA21URLRequestConvertible_p4withtF">upload(_:with:)</a>
  199. </li>
  200. <li class="nav-group-task">
  201. <a class="nav-group-task-link" href="../Functions.html#/s:9Alamofire6uploadAA13UploadRequestCSo11InputStreamC_AA21URLRequestConvertible_p4withtF">upload(_:with:)</a>
  202. </li>
  203. <li class="nav-group-task">
  204. <a class="nav-group-task-link" href="../Functions.html#/s:9Alamofire6uploadyyAA17MultipartFormDataCc09multipartdE0_s6UInt64V14usingThresholdAA14URLConvertible_p2toAA10HTTPMethodO6methods10DictionaryVyS2SGSg7headersyAA14SessionManagerC0cdE14EncodingResultOcSg18encodingCompletiontF">upload(multipartFormData:usingThreshold:to:method:headers:encodingCompletion:)</a>
  205. </li>
  206. <li class="nav-group-task">
  207. <a class="nav-group-task-link" href="../Functions.html#/s:9Alamofire6uploadyyAA17MultipartFormDataCc09multipartdE0_s6UInt64V14usingThresholdAA21URLRequestConvertible_p4withyAA14SessionManagerC0cdE14EncodingResultOcSg18encodingCompletiontF">upload(multipartFormData:usingThreshold:with:encodingCompletion:)</a>
  208. </li>
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  210. </li>
  211. <li class="nav-group-name">
  212. <a class="nav-group-name-link" href="../Protocols.html">Protocols</a>
  213. <ul class="nav-group-tasks">
  214. <li class="nav-group-task">
  215. <a class="nav-group-task-link" href="../Protocols/DataResponseSerializerProtocol.html">DataResponseSerializerProtocol</a>
  216. </li>
  217. <li class="nav-group-task">
  218. <a class="nav-group-task-link" href="../Protocols/DownloadResponseSerializerProtocol.html">DownloadResponseSerializerProtocol</a>
  219. </li>
  220. <li class="nav-group-task">
  221. <a class="nav-group-task-link" href="../Protocols/ParameterEncoding.html">ParameterEncoding</a>
  222. </li>
  223. <li class="nav-group-task">
  224. <a class="nav-group-task-link" href="../Protocols/RequestAdapter.html">RequestAdapter</a>
  225. </li>
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  227. <a class="nav-group-task-link" href="../Protocols/RequestRetrier.html">RequestRetrier</a>
  228. </li>
  229. <li class="nav-group-task">
  230. <a class="nav-group-task-link" href="../Protocols/URLConvertible.html">URLConvertible</a>
  231. </li>
  232. <li class="nav-group-task">
  233. <a class="nav-group-task-link" href="../Protocols/URLRequestConvertible.html">URLRequestConvertible</a>
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  238. <a class="nav-group-name-link" href="../Structs.html">Structures</a>
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  243. <li class="nav-group-task">
  244. <a class="nav-group-task-link" href="../Structs/DataResponseSerializer.html">DataResponseSerializer</a>
  245. </li>
  246. <li class="nav-group-task">
  247. <a class="nav-group-task-link" href="../Structs/DefaultDataResponse.html">DefaultDataResponse</a>
  248. </li>
  249. <li class="nav-group-task">
  250. <a class="nav-group-task-link" href="../Structs/DefaultDownloadResponse.html">DefaultDownloadResponse</a>
  251. </li>
  252. <li class="nav-group-task">
  253. <a class="nav-group-task-link" href="../Structs/DownloadResponse.html">DownloadResponse</a>
  254. </li>
  255. <li class="nav-group-task">
  256. <a class="nav-group-task-link" href="../Structs/DownloadResponseSerializer.html">DownloadResponseSerializer</a>
  257. </li>
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  259. <a class="nav-group-task-link" href="../Structs/JSONEncoding.html">JSONEncoding</a>
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  262. <a class="nav-group-task-link" href="../Structs/PropertyListEncoding.html">PropertyListEncoding</a>
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  265. <a class="nav-group-task-link" href="../Structs/Timeline.html">Timeline</a>
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  267. <li class="nav-group-task">
  268. <a class="nav-group-task-link" href="../Structs/URLEncoding.html">URLEncoding</a>
  269. </li>
  270. <li class="nav-group-task">
  271. <a class="nav-group-task-link" href="../Structs/URLEncoding/Destination.html">– Destination</a>
  272. </li>
  273. </ul>
  274. </li>
  275. <li class="nav-group-name">
  276. <a class="nav-group-name-link" href="../Typealiases.html">Type Aliases</a>
  277. <ul class="nav-group-tasks">
  278. <li class="nav-group-task">
  279. <a class="nav-group-task-link" href="../Typealiases.html#/s:9Alamofire11HTTPHeadersa">HTTPHeaders</a>
  280. </li>
  281. <li class="nav-group-task">
  282. <a class="nav-group-task-link" href="../Typealiases.html#/s:9Alamofire10Parametersa">Parameters</a>
  283. </li>
  284. <li class="nav-group-task">
  285. <a class="nav-group-task-link" href="../Typealiases.html#/s:9Alamofire22RequestRetryCompletiona">RequestRetryCompletion</a>
  286. </li>
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  288. </li>
  289. </ul>
  290. </nav>
  291. <article class="main-content">
  292. <section class="section">
  293. <div class="section-content">
  294. <h1>Result</h1>
  295. <div class="declaration">
  296. <div class="language">
  297. <pre class="highlight"><code><span class="kd">public</span> <span class="kd">enum</span> <span class="kt">Result</span><span class="o">&lt;</span><span class="kt">Value</span><span class="o">&gt;</span></code></pre>
  298. </div>
  299. </div>
  300. <p>Used to represent whether a request was successful or encountered an error.</p>
  301. <ul>
  302. <li><p>success: The request and all post processing operations were successful resulting in the serialization of the
  303. provided associated value.</p></li>
  304. <li><p>failure: The request encountered an error resulting in a failure. The associated values are the original data
  305. provided by the server as well as the error that caused the failure.</p></li>
  306. </ul>
  307. </div>
  308. </section>
  309. <section class="section">
  310. <div class="section-content">
  311. <div class="task-group">
  312. <ul class="item-container">
  313. <li class="item">
  314. <div>
  315. <code>
  316. <a name="/s:9Alamofire6ResultO7successACyxGxcAEmlF"></a>
  317. <a name="//apple_ref/swift/Element/success" class="dashAnchor"></a>
  318. <a class="token" href="#/s:9Alamofire6ResultO7successACyxGxcAEmlF">success</a>
  319. </code>
  320. </div>
  321. <div class="height-container">
  322. <div class="pointer-container"></div>
  323. <section class="section">
  324. <div class="pointer"></div>
  325. <div class="abstract">
  326. <p>Undocumented</p>
  327. </div>
  328. <div class="declaration">
  329. <h4>Declaration</h4>
  330. <div class="language">
  331. <p class="aside-title">Swift</p>
  332. <pre class="highlight"><code><span class="k">case</span> <span class="nf">success</span><span class="p">(</span><span class="kt">Value</span><span class="p">)</span></code></pre>
  333. </div>
  334. </div>
  335. </section>
  336. </div>
  337. </li>
  338. </ul>
  339. </div>
  340. <div class="task-group">
  341. <ul class="item-container">
  342. <li class="item">
  343. <div>
  344. <code>
  345. <a name="/s:9Alamofire6ResultO7failureACyxGs5Error_pcAEmlF"></a>
  346. <a name="//apple_ref/swift/Element/failure" class="dashAnchor"></a>
  347. <a class="token" href="#/s:9Alamofire6ResultO7failureACyxGs5Error_pcAEmlF">failure</a>
  348. </code>
  349. </div>
  350. <div class="height-container">
  351. <div class="pointer-container"></div>
  352. <section class="section">
  353. <div class="pointer"></div>
  354. <div class="abstract">
  355. <p>Undocumented</p>
  356. </div>
  357. <div class="declaration">
  358. <h4>Declaration</h4>
  359. <div class="language">
  360. <p class="aside-title">Swift</p>
  361. <pre class="highlight"><code><span class="k">case</span> <span class="nf">failure</span><span class="p">(</span><span class="kt">Error</span><span class="p">)</span></code></pre>
  362. </div>
  363. </div>
  364. </section>
  365. </div>
  366. </li>
  367. </ul>
  368. </div>
  369. <div class="task-group">
  370. <ul class="item-container">
  371. <li class="item">
  372. <div>
  373. <code>
  374. <a name="/s:9Alamofire6ResultO9isSuccessSbv"></a>
  375. <a name="//apple_ref/swift/Property/isSuccess" class="dashAnchor"></a>
  376. <a class="token" href="#/s:9Alamofire6ResultO9isSuccessSbv">isSuccess</a>
  377. </code>
  378. </div>
  379. <div class="height-container">
  380. <div class="pointer-container"></div>
  381. <section class="section">
  382. <div class="pointer"></div>
  383. <div class="abstract">
  384. <p>Returns <code>true</code> if the result is a success, <code>false</code> otherwise.</p>
  385. </div>
  386. <div class="declaration">
  387. <h4>Declaration</h4>
  388. <div class="language">
  389. <p class="aside-title">Swift</p>
  390. <pre class="highlight"><code><span class="kd">public</span> <span class="k">var</span> <span class="nv">isSuccess</span><span class="p">:</span> <span class="kt">Bool</span></code></pre>
  391. </div>
  392. </div>
  393. </section>
  394. </div>
  395. </li>
  396. <li class="item">
  397. <div>
  398. <code>
  399. <a name="/s:9Alamofire6ResultO9isFailureSbv"></a>
  400. <a name="//apple_ref/swift/Property/isFailure" class="dashAnchor"></a>
  401. <a class="token" href="#/s:9Alamofire6ResultO9isFailureSbv">isFailure</a>
  402. </code>
  403. </div>
  404. <div class="height-container">
  405. <div class="pointer-container"></div>
  406. <section class="section">
  407. <div class="pointer"></div>
  408. <div class="abstract">
  409. <p>Returns <code>true</code> if the result is a failure, <code>false</code> otherwise.</p>
  410. </div>
  411. <div class="declaration">
  412. <h4>Declaration</h4>
  413. <div class="language">
  414. <p class="aside-title">Swift</p>
  415. <pre class="highlight"><code><span class="kd">public</span> <span class="k">var</span> <span class="nv">isFailure</span><span class="p">:</span> <span class="kt">Bool</span></code></pre>
  416. </div>
  417. </div>
  418. </section>
  419. </div>
  420. </li>
  421. <li class="item">
  422. <div>
  423. <code>
  424. <a name="/s:9Alamofire6ResultO5valuexSgv"></a>
  425. <a name="//apple_ref/swift/Property/value" class="dashAnchor"></a>
  426. <a class="token" href="#/s:9Alamofire6ResultO5valuexSgv">value</a>
  427. </code>
  428. </div>
  429. <div class="height-container">
  430. <div class="pointer-container"></div>
  431. <section class="section">
  432. <div class="pointer"></div>
  433. <div class="abstract">
  434. <p>Returns the associated value if the result is a success, <code>nil</code> otherwise.</p>
  435. </div>
  436. <div class="declaration">
  437. <h4>Declaration</h4>
  438. <div class="language">
  439. <p class="aside-title">Swift</p>
  440. <pre class="highlight"><code><span class="kd">public</span> <span class="k">var</span> <span class="nv">value</span><span class="p">:</span> <span class="kt">Value</span><span class="p">?</span></code></pre>
  441. </div>
  442. </div>
  443. </section>
  444. </div>
  445. </li>
  446. <li class="item">
  447. <div>
  448. <code>
  449. <a name="/s:9Alamofire6ResultO5errors5Error_pSgv"></a>
  450. <a name="//apple_ref/swift/Property/error" class="dashAnchor"></a>
  451. <a class="token" href="#/s:9Alamofire6ResultO5errors5Error_pSgv">error</a>
  452. </code>
  453. </div>
  454. <div class="height-container">
  455. <div class="pointer-container"></div>
  456. <section class="section">
  457. <div class="pointer"></div>
  458. <div class="abstract">
  459. <p>Returns the associated error value if the result is a failure, <code>nil</code> otherwise.</p>
  460. </div>
  461. <div class="declaration">
  462. <h4>Declaration</h4>
  463. <div class="language">
  464. <p class="aside-title">Swift</p>
  465. <pre class="highlight"><code><span class="kd">public</span> <span class="k">var</span> <span class="nv">error</span><span class="p">:</span> <span class="kt">Error</span><span class="p">?</span></code></pre>
  466. </div>
  467. </div>
  468. </section>
  469. </div>
  470. </li>
  471. </ul>
  472. </div>
  473. <div class="task-group">
  474. <ul class="item-container">
  475. <li class="item">
  476. <div>
  477. <code>
  478. <a name="/s:9Alamofire6ResultO11descriptionSSv"></a>
  479. <a name="//apple_ref/swift/Property/description" class="dashAnchor"></a>
  480. <a class="token" href="#/s:9Alamofire6ResultO11descriptionSSv">description</a>
  481. </code>
  482. </div>
  483. <div class="height-container">
  484. <div class="pointer-container"></div>
  485. <section class="section">
  486. <div class="pointer"></div>
  487. <div class="abstract">
  488. <p>The textual representation used when written to an output stream, which includes whether the result was a
  489. success or failure.</p>
  490. </div>
  491. <div class="declaration">
  492. <h4>Declaration</h4>
  493. <div class="language">
  494. <p class="aside-title">Swift</p>
  495. <pre class="highlight"><code><span class="kd">public</span> <span class="k">var</span> <span class="nv">description</span><span class="p">:</span> <span class="kt">String</span></code></pre>
  496. </div>
  497. </div>
  498. </section>
  499. </div>
  500. </li>
  501. </ul>
  502. </div>
  503. <div class="task-group">
  504. <ul class="item-container">
  505. <li class="item">
  506. <div>
  507. <code>
  508. <a name="/s:9Alamofire6ResultO16debugDescriptionSSv"></a>
  509. <a name="//apple_ref/swift/Property/debugDescription" class="dashAnchor"></a>
  510. <a class="token" href="#/s:9Alamofire6ResultO16debugDescriptionSSv">debugDescription</a>
  511. </code>
  512. </div>
  513. <div class="height-container">
  514. <div class="pointer-container"></div>
  515. <section class="section">
  516. <div class="pointer"></div>
  517. <div class="abstract">
  518. <p>The debug textual representation used when written to an output stream, which includes whether the result was a
  519. success or failure in addition to the value or error.</p>
  520. </div>
  521. <div class="declaration">
  522. <h4>Declaration</h4>
  523. <div class="language">
  524. <p class="aside-title">Swift</p>
  525. <pre class="highlight"><code><span class="kd">public</span> <span class="k">var</span> <span class="nv">debugDescription</span><span class="p">:</span> <span class="kt">String</span></code></pre>
  526. </div>
  527. </div>
  528. </section>
  529. </div>
  530. </li>
  531. </ul>
  532. </div>
  533. <div class="task-group">
  534. <ul class="item-container">
  535. <li class="item">
  536. <div>
  537. <code>
  538. <a name="/s:9Alamofire6ResultOACyxGxyKc5value_tcfc"></a>
  539. <a name="//apple_ref/swift/Method/init(value:)" class="dashAnchor"></a>
  540. <a class="token" href="#/s:9Alamofire6ResultOACyxGxyKc5value_tcfc">init(value:)</a>
  541. </code>
  542. </div>
  543. <div class="height-container">
  544. <div class="pointer-container"></div>
  545. <section class="section">
  546. <div class="pointer"></div>
  547. <div class="abstract">
  548. <p>Creates a <code>Result</code> instance from the result of a closure.</p>
  549. <p>A failure result is created when the closure throws, and a success result is created when the closure
  550. succeeds without throwing an error.</p>
  551. <pre class="highlight plaintext"><code>func someString() throws -&gt; String { ... }
  552. let result = Result(value: {
  553. return try someString()
  554. })
  555. // The type of result is Result&lt;String&gt;
  556. </code></pre>
  557. <p>The trailing closure syntax is also supported:</p>
  558. <pre class="highlight plaintext"><code>let result = Result { try someString() }
  559. </code></pre>
  560. </div>
  561. <div class="declaration">
  562. <h4>Declaration</h4>
  563. <div class="language">
  564. <p class="aside-title">Swift</p>
  565. <pre class="highlight"><code><span class="kd">public</span> <span class="nf">init</span><span class="p">(</span><span class="nv">value</span><span class="p">:</span> <span class="p">()</span> <span class="k">throws</span> <span class="o">-&gt;</span> <span class="kt">Value</span><span class="p">)</span></code></pre>
  566. </div>
  567. </div>
  568. <div>
  569. <h4>Parameters</h4>
  570. <table class="graybox">
  571. <tbody>
  572. <tr>
  573. <td>
  574. <code>
  575. <em>value</em>
  576. </code>
  577. </td>
  578. <td>
  579. <div>
  580. <p>The closure to execute and create the result for.</p>
  581. </div>
  582. </td>
  583. </tr>
  584. </tbody>
  585. </table>
  586. </div>
  587. </section>
  588. </div>
  589. </li>
  590. <li class="item">
  591. <div>
  592. <code>
  593. <a name="/s:9Alamofire6ResultO6unwrapxyKF"></a>
  594. <a name="//apple_ref/swift/Method/unwrap()" class="dashAnchor"></a>
  595. <a class="token" href="#/s:9Alamofire6ResultO6unwrapxyKF">unwrap()</a>
  596. </code>
  597. </div>
  598. <div class="height-container">
  599. <div class="pointer-container"></div>
  600. <section class="section">
  601. <div class="pointer"></div>
  602. <div class="abstract">
  603. <p>Returns the success value, or throws the failure error.</p>
  604. <pre class="highlight plaintext"><code>let possibleString: Result&lt;String&gt; = .success("success")
  605. try print(possibleString.unwrap())
  606. // Prints "success"
  607. let noString: Result&lt;String&gt; = .failure(error)
  608. try print(noString.unwrap())
  609. // Throws error
  610. </code></pre>
  611. </div>
  612. <div class="declaration">
  613. <h4>Declaration</h4>
  614. <div class="language">
  615. <p class="aside-title">Swift</p>
  616. <pre class="highlight"><code><span class="kd">public</span> <span class="kd">func</span> <span class="nf">unwrap</span><span class="p">()</span> <span class="k">throws</span> <span class="o">-&gt;</span> <span class="kt">Value</span></code></pre>
  617. </div>
  618. </div>
  619. </section>
  620. </div>
  621. </li>
  622. <li class="item">
  623. <div>
  624. <code>
  625. <a name="/s:9Alamofire6ResultO3mapACyqd__Gqd__xclF"></a>
  626. <a name="//apple_ref/swift/Method/map(_:)" class="dashAnchor"></a>
  627. <a class="token" href="#/s:9Alamofire6ResultO3mapACyqd__Gqd__xclF">map(_:)</a>
  628. </code>
  629. </div>
  630. <div class="height-container">
  631. <div class="pointer-container"></div>
  632. <section class="section">
  633. <div class="pointer"></div>
  634. <div class="abstract">
  635. <p>Evaluates the specified closure when the <code>Result</code> is a success, passing the unwrapped value as a parameter.</p>
  636. <p>Use the <code>map</code> method with a closure that does not throw. For example:</p>
  637. <pre class="highlight plaintext"><code>let possibleData: Result&lt;Data&gt; = .success(Data())
  638. let possibleInt = possibleData.map { $0.count }
  639. try print(possibleInt.unwrap())
  640. // Prints "0"
  641. let noData: Result&lt;Data&gt; = .failure(error)
  642. let noInt = noData.map { $0.count }
  643. try print(noInt.unwrap())
  644. // Throws error
  645. </code></pre>
  646. </div>
  647. <div class="declaration">
  648. <h4>Declaration</h4>
  649. <div class="language">
  650. <p class="aside-title">Swift</p>
  651. <pre class="highlight"><code><span class="kd">public</span> <span class="kd">func</span> <span class="n">map</span><span class="o">&lt;</span><span class="kt">T</span><span class="o">&gt;</span><span class="p">(</span><span class="n">_</span> <span class="nv">transform</span><span class="p">:</span> <span class="p">(</span><span class="kt">Value</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kt">T</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kt">Result</span><span class="o">&lt;</span><span class="kt">T</span><span class="o">&gt;</span></code></pre>
  652. </div>
  653. </div>
  654. <div>
  655. <h4>Parameters</h4>
  656. <table class="graybox">
  657. <tbody>
  658. <tr>
  659. <td>
  660. <code>
  661. <em>transform</em>
  662. </code>
  663. </td>
  664. <td>
  665. <div>
  666. <p>A closure that takes the success value of the <code>Result</code> instance.</p>
  667. </div>
  668. </td>
  669. </tr>
  670. </tbody>
  671. </table>
  672. </div>
  673. <div>
  674. <h4>Return Value</h4>
  675. <p>A <code>Result</code> containing the result of the given closure. If this instance is a failure, returns the
  676. same failure.</p>
  677. </div>
  678. </section>
  679. </div>
  680. </li>
  681. <li class="item">
  682. <div>
  683. <code>
  684. <a name="/s:9Alamofire6ResultO7flatMapACyqd__Gqd__xKclF"></a>
  685. <a name="//apple_ref/swift/Method/flatMap(_:)" class="dashAnchor"></a>
  686. <a class="token" href="#/s:9Alamofire6ResultO7flatMapACyqd__Gqd__xKclF">flatMap(_:)</a>
  687. </code>
  688. </div>
  689. <div class="height-container">
  690. <div class="pointer-container"></div>
  691. <section class="section">
  692. <div class="pointer"></div>
  693. <div class="abstract">
  694. <p>Evaluates the specified closure when the <code>Result</code> is a success, passing the unwrapped value as a parameter.</p>
  695. <p>Use the <code>flatMap</code> method with a closure that may throw an error. For example:</p>
  696. <pre class="highlight plaintext"><code>let possibleData: Result&lt;Data&gt; = .success(Data(...))
  697. let possibleObject = possibleData.flatMap {
  698. try JSONSerialization.jsonObject(with: $0)
  699. }
  700. </code></pre>
  701. </div>
  702. <div class="declaration">
  703. <h4>Declaration</h4>
  704. <div class="language">
  705. <p class="aside-title">Swift</p>
  706. <pre class="highlight"><code><span class="kd">public</span> <span class="kd">func</span> <span class="n">flatMap</span><span class="o">&lt;</span><span class="kt">T</span><span class="o">&gt;</span><span class="p">(</span><span class="n">_</span> <span class="nv">transform</span><span class="p">:</span> <span class="p">(</span><span class="kt">Value</span><span class="p">)</span> <span class="k">throws</span> <span class="o">-&gt;</span> <span class="kt">T</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kt">Result</span><span class="o">&lt;</span><span class="kt">T</span><span class="o">&gt;</span></code></pre>
  707. </div>
  708. </div>
  709. <div>
  710. <h4>Parameters</h4>
  711. <table class="graybox">
  712. <tbody>
  713. <tr>
  714. <td>
  715. <code>
  716. <em>transform</em>
  717. </code>
  718. </td>
  719. <td>
  720. <div>
  721. <p>A closure that takes the success value of the instance.</p>
  722. </div>
  723. </td>
  724. </tr>
  725. </tbody>
  726. </table>
  727. </div>
  728. <div>
  729. <h4>Return Value</h4>
  730. <p>A <code>Result</code> containing the result of the given closure. If this instance is a failure, returns the
  731. same failure.</p>
  732. </div>
  733. </section>
  734. </div>
  735. </li>
  736. <li class="item">
  737. <div>
  738. <code>
  739. <a name="/s:9Alamofire6ResultO8mapErrorACyxGqd__s0D0_pcsAFRd__lF"></a>
  740. <a name="//apple_ref/swift/Method/mapError(_:)" class="dashAnchor"></a>
  741. <a class="token" href="#/s:9Alamofire6ResultO8mapErrorACyxGqd__s0D0_pcsAFRd__lF">mapError(_:)</a>
  742. </code>
  743. </div>
  744. <div class="height-container">
  745. <div class="pointer-container"></div>
  746. <section class="section">
  747. <div class="pointer"></div>
  748. <div class="abstract">
  749. <p>Evaluates the specified closure when the <code>Result</code> is a failure, passing the unwrapped error as a parameter.</p>
  750. <p>Use the <code>mapError</code> function with a closure that does not throw. For example:</p>
  751. <pre class="highlight plaintext"><code>let possibleData: Result&lt;Data&gt; = .failure(someError)
  752. let withMyError: Result&lt;Data&gt; = possibleData.mapError { MyError.error($0) }
  753. </code></pre>
  754. </div>
  755. <div class="declaration">
  756. <h4>Declaration</h4>
  757. <div class="language">
  758. <p class="aside-title">Swift</p>
  759. <pre class="highlight"><code><span class="kd">public</span> <span class="kd">func</span> <span class="n">mapError</span><span class="o">&lt;</span><span class="kt">T</span><span class="p">:</span> <span class="kt">Error</span><span class="o">&gt;</span><span class="p">(</span><span class="n">_</span> <span class="nv">transform</span><span class="p">:</span> <span class="p">(</span><span class="kt">Error</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kt">T</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kt">Result</span></code></pre>
  760. </div>
  761. </div>
  762. <div>
  763. <h4>Parameters</h4>
  764. <table class="graybox">
  765. <tbody>
  766. <tr>
  767. <td>
  768. <code>
  769. <em>transform</em>
  770. </code>
  771. </td>
  772. <td>
  773. <div>
  774. <p>A closure that takes the error of the instance.</p>
  775. </div>
  776. </td>
  777. </tr>
  778. </tbody>
  779. </table>
  780. </div>
  781. <div>
  782. <h4>Return Value</h4>
  783. <p>A <code>Result</code> instance containing the result of the transform. If this instance is a success, returns
  784. the same instance.</p>
  785. </div>
  786. </section>
  787. </div>
  788. </li>
  789. <li class="item">
  790. <div>
  791. <code>
  792. <a name="/s:9Alamofire6ResultO12flatMapErrorACyxGqd__s0E0_pKcsAFRd__lF"></a>
  793. <a name="//apple_ref/swift/Method/flatMapError(_:)" class="dashAnchor"></a>
  794. <a class="token" href="#/s:9Alamofire6ResultO12flatMapErrorACyxGqd__s0E0_pKcsAFRd__lF">flatMapError(_:)</a>
  795. </code>
  796. </div>
  797. <div class="height-container">
  798. <div class="pointer-container"></div>
  799. <section class="section">
  800. <div class="pointer"></div>
  801. <div class="abstract">
  802. <p>Evaluates the specified closure when the <code>Result</code> is a failure, passing the unwrapped error as a parameter.</p>
  803. <p>Use the <code>flatMapError</code> function with a closure that may throw an error. For example:</p>
  804. <pre class="highlight plaintext"><code>let possibleData: Result&lt;Data&gt; = .success(Data(...))
  805. let possibleObject = possibleData.flatMapError {
  806. try someFailableFunction(taking: $0)
  807. }
  808. </code></pre>
  809. </div>
  810. <div class="declaration">
  811. <h4>Declaration</h4>
  812. <div class="language">
  813. <p class="aside-title">Swift</p>
  814. <pre class="highlight"><code><span class="kd">public</span> <span class="kd">func</span> <span class="n">flatMapError</span><span class="o">&lt;</span><span class="kt">T</span><span class="p">:</span> <span class="kt">Error</span><span class="o">&gt;</span><span class="p">(</span><span class="n">_</span> <span class="nv">transform</span><span class="p">:</span> <span class="p">(</span><span class="kt">Error</span><span class="p">)</span> <span class="k">throws</span> <span class="o">-&gt;</span> <span class="kt">T</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kt">Result</span></code></pre>
  815. </div>
  816. </div>
  817. <div>
  818. <h4>Parameters</h4>
  819. <table class="graybox">
  820. <tbody>
  821. <tr>
  822. <td>
  823. <code>
  824. <em>transform</em>
  825. </code>
  826. </td>
  827. <td>
  828. <div>
  829. <p>A throwing closure that takes the error of the instance.</p>
  830. </div>
  831. </td>
  832. </tr>
  833. </tbody>
  834. </table>
  835. </div>
  836. <div>
  837. <h4>Return Value</h4>
  838. <p>A <code>Result</code> instance containing the result of the transform. If this instance is a success, returns
  839. the same instance.</p>
  840. </div>
  841. </section>
  842. </div>
  843. </li>
  844. <li class="item">
  845. <div>
  846. <code>
  847. <a name="/s:9Alamofire6ResultO9withValueACyxGyxcF"></a>
  848. <a name="//apple_ref/swift/Method/withValue(_:)" class="dashAnchor"></a>
  849. <a class="token" href="#/s:9Alamofire6ResultO9withValueACyxGyxcF">withValue(_:)</a>
  850. </code>
  851. </div>
  852. <div class="height-container">
  853. <div class="pointer-container"></div>
  854. <section class="section">
  855. <div class="pointer"></div>
  856. <div class="abstract">
  857. <p>Evaluates the specified closure when the <code>Result</code> is a success, passing the unwrapped value as a parameter.</p>
  858. <p>Use the <code>withValue</code> function to evaluate the passed closure without modifying the <code>Result</code> instance.</p>
  859. </div>
  860. <div class="declaration">
  861. <h4>Declaration</h4>
  862. <div class="language">
  863. <p class="aside-title">Swift</p>
  864. <pre class="highlight"><code><span class="kd">public</span> <span class="kd">func</span> <span class="nf">withValue</span><span class="p">(</span><span class="n">_</span> <span class="nv">closure</span><span class="p">:</span> <span class="p">(</span><span class="kt">Value</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kt">Void</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kt">Result</span></code></pre>
  865. </div>
  866. </div>
  867. <div>
  868. <h4>Parameters</h4>
  869. <table class="graybox">
  870. <tbody>
  871. <tr>
  872. <td>
  873. <code>
  874. <em>closure</em>
  875. </code>
  876. </td>
  877. <td>
  878. <div>
  879. <p>A closure that takes the success value of this instance.</p>
  880. </div>
  881. </td>
  882. </tr>
  883. </tbody>
  884. </table>
  885. </div>
  886. <div>
  887. <h4>Return Value</h4>
  888. <p>This <code>Result</code> instance, unmodified.</p>
  889. </div>
  890. </section>
  891. </div>
  892. </li>
  893. <li class="item">
  894. <div>
  895. <code>
  896. <a name="/s:9Alamofire6ResultO9withErrorACyxGys0D0_pcF"></a>
  897. <a name="//apple_ref/swift/Method/withError(_:)" class="dashAnchor"></a>
  898. <a class="token" href="#/s:9Alamofire6ResultO9withErrorACyxGys0D0_pcF">withError(_:)</a>
  899. </code>
  900. </div>
  901. <div class="height-container">
  902. <div class="pointer-container"></div>
  903. <section class="section">
  904. <div class="pointer"></div>
  905. <div class="abstract">
  906. <p>Evaluates the specified closure when the <code>Result</code> is a failure, passing the unwrapped error as a parameter.</p>
  907. <p>Use the <code>withError</code> function to evaluate the passed closure without modifying the <code>Result</code> instance.</p>
  908. </div>
  909. <div class="declaration">
  910. <h4>Declaration</h4>
  911. <div class="language">
  912. <p class="aside-title">Swift</p>
  913. <pre class="highlight"><code><span class="kd">public</span> <span class="kd">func</span> <span class="nf">withError</span><span class="p">(</span><span class="n">_</span> <span class="nv">closure</span><span class="p">:</span> <span class="p">(</span><span class="kt">Error</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kt">Void</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kt">Result</span></code></pre>
  914. </div>
  915. </div>
  916. <div>
  917. <h4>Parameters</h4>
  918. <table class="graybox">
  919. <tbody>
  920. <tr>
  921. <td>
  922. <code>
  923. <em>closure</em>
  924. </code>
  925. </td>
  926. <td>
  927. <div>
  928. <p>A closure that takes the success value of this instance.</p>
  929. </div>
  930. </td>
  931. </tr>
  932. </tbody>
  933. </table>
  934. </div>
  935. <div>
  936. <h4>Return Value</h4>
  937. <p>This <code>Result</code> instance, unmodified.</p>
  938. </div>
  939. </section>
  940. </div>
  941. </li>
  942. <li class="item">
  943. <div>
  944. <code>
  945. <a name="/s:9Alamofire6ResultO9ifSuccessACyxGyycF"></a>
  946. <a name="//apple_ref/swift/Method/ifSuccess(_:)" class="dashAnchor"></a>
  947. <a class="token" href="#/s:9Alamofire6ResultO9ifSuccessACyxGyycF">ifSuccess(_:)</a>
  948. </code>
  949. </div>
  950. <div class="height-container">
  951. <div class="pointer-container"></div>
  952. <section class="section">
  953. <div class="pointer"></div>
  954. <div class="abstract">
  955. <p>Evaluates the specified closure when the <code>Result</code> is a success.</p>
  956. <p>Use the <code>ifSuccess</code> function to evaluate the passed closure without modifying the <code>Result</code> instance.</p>
  957. </div>
  958. <div class="declaration">
  959. <h4>Declaration</h4>
  960. <div class="language">
  961. <p class="aside-title">Swift</p>
  962. <pre class="highlight"><code><span class="kd">public</span> <span class="kd">func</span> <span class="nf">ifSuccess</span><span class="p">(</span><span class="n">_</span> <span class="nv">closure</span><span class="p">:</span> <span class="p">()</span> <span class="o">-&gt;</span> <span class="kt">Void</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kt">Result</span></code></pre>
  963. </div>
  964. </div>
  965. <div>
  966. <h4>Parameters</h4>
  967. <table class="graybox">
  968. <tbody>
  969. <tr>
  970. <td>
  971. <code>
  972. <em>closure</em>
  973. </code>
  974. </td>
  975. <td>
  976. <div>
  977. <p>A <code>Void</code> closure.</p>
  978. </div>
  979. </td>
  980. </tr>
  981. </tbody>
  982. </table>
  983. </div>
  984. <div>
  985. <h4>Return Value</h4>
  986. <p>This <code>Result</code> instance, unmodified.</p>
  987. </div>
  988. </section>
  989. </div>
  990. </li>
  991. <li class="item">
  992. <div>
  993. <code>
  994. <a name="/s:9Alamofire6ResultO9ifFailureACyxGyycF"></a>
  995. <a name="//apple_ref/swift/Method/ifFailure(_:)" class="dashAnchor"></a>
  996. <a class="token" href="#/s:9Alamofire6ResultO9ifFailureACyxGyycF">ifFailure(_:)</a>
  997. </code>
  998. </div>
  999. <div class="height-container">
  1000. <div class="pointer-container"></div>
  1001. <section class="section">
  1002. <div class="pointer"></div>
  1003. <div class="abstract">
  1004. <p>Evaluates the specified closure when the <code>Result</code> is a failure.</p>
  1005. <p>Use the <code>ifFailure</code> function to evaluate the passed closure without modifying the <code>Result</code> instance.</p>
  1006. </div>
  1007. <div class="declaration">
  1008. <h4>Declaration</h4>
  1009. <div class="language">
  1010. <p class="aside-title">Swift</p>
  1011. <pre class="highlight"><code><span class="kd">public</span> <span class="kd">func</span> <span class="nf">ifFailure</span><span class="p">(</span><span class="n">_</span> <span class="nv">closure</span><span class="p">:</span> <span class="p">()</span> <span class="o">-&gt;</span> <span class="kt">Void</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kt">Result</span></code></pre>
  1012. </div>
  1013. </div>
  1014. <div>
  1015. <h4>Parameters</h4>
  1016. <table class="graybox">
  1017. <tbody>
  1018. <tr>
  1019. <td>
  1020. <code>
  1021. <em>closure</em>
  1022. </code>
  1023. </td>
  1024. <td>
  1025. <div>
  1026. <p>A <code>Void</code> closure.</p>
  1027. </div>
  1028. </td>
  1029. </tr>
  1030. </tbody>
  1031. </table>
  1032. </div>
  1033. <div>
  1034. <h4>Return Value</h4>
  1035. <p>This <code>Result</code> instance, unmodified.</p>
  1036. </div>
  1037. </section>
  1038. </div>
  1039. </li>
  1040. </ul>
  1041. </div>
  1042. </div>
  1043. </section>
  1044. </article>
  1045. </div>
  1046. <section class="footer">
  1047. <p>&copy; 2017 <a class="link" href="http://alamofire.org/" target="_blank" rel="external">Alamofire Software Foundation</a>. All rights reserved. (Last updated: 2017-12-03)</p>
  1048. <p>Generated by <a class="link" href="https://github.com/realm/jazzy" target="_blank" rel="external">jazzy ♪♫ v0.9.0</a>, a <a class="link" href="http://realm.io" target="_blank" rel="external">Realm</a> project.</p>
  1049. </section>
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