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SwiftでNSURLSession

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NSURLSessionでWebページから情報を取ってくるのをSwiftで。
Objective-Cの時と比べて、completionHandlerがスッキリしてる。

import Foundation

let url  = NSURL.URLWithString("http://qiita.com/")
let session = NSURLSession(configuration: NSURLSessionConfiguration.defaultSessionConfiguration())
let task    = session.dataTaskWithURL(url, completionHandler: {
    (data, resp, err) in
        println(NSString(data: data, encoding:NSUTF8StringEncoding))
    })

task.resume()

Objective-Cだとこうでした

NSURL            *url     = [NSURL URLWithString:@"http://qiita.com/"];
NSURLSession     *session = [NSURLSession defaultSessionConfiguration];
NSURLSessionTask *task = [session dataTaskWithURL:url
  completionHandler:^(NSData *data, NSURLResponse *resp, NEError *err) {
    NSString *res = [[NSString alloc]initWithData:data encoding: NSUTF8StringEncoding];
    NSLog(@"%@", res);
}];

[task resume];
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