Simple as that:    

    stringArray[2] = &quot;new string&quot;



What&#39;s the `tabindex` attribute in Bootstrap 3 for?

Its documentation doesn&#39;t say anything about them although they use them practically in all modals.

I&#39;ve only find this regarding its use, which doesn&#39;t really say much

&gt; **Accessible tooltips for keyboard and assistive technology users**
&gt;
&gt; For users navigating with a keyboard, and in particular users of assistive technologies, you should only add tooltips to keyboard-focusable elements such as links, form controls, or any arbitrary element with a tabindex=&quot;0&quot; attribute.

And I found out [I can&#39;t press `esc` to hide a modal if the `tabindex` attribute is not `-1`](https://github.com/twbs/bootstrap/issues/4854).

- [Modal closing after pressing `esc` key (with tabindex)](http://jsfiddle.net/Lz5c1v8d/)
- [Modal not closing after pressing `esc` key (without tabindex)](http://jsfiddle.net/Lz5c1v8d/1/)

What&#39;s the tabindex=&quot;-1&quot; in bootstrap for

Let&#39;s suppose I have the following variable:

    System.Net.HttpStatusCode status = System.Net.HttpStatusCode.OK;

How can I check if this is a success status code or a failure one?

For instance, I can do the following:

    int code = (int)status;
    if(code &gt;= 200 &amp;&amp; code &lt; 300) {
        //Success
    }

I can also have some kind of white list:

    HttpStatusCode[] successStatus = new HttpStatusCode[] {
         HttpStatusCode.OK,
         HttpStatusCode.Created,
         HttpStatusCode.Accepted,
         HttpStatusCode.NonAuthoritativeInformation,
         HttpStatusCode.NoContent,
         HttpStatusCode.ResetContent,
         HttpStatusCode.PartialContent
    };
    if(successStatus.Contains(status)) //LINQ
    {
        //Success
    }

None of these alternatives convinces me, and I was hoping for a .NET class or method that can do this work for me, such as:

    bool isSuccess = HttpUtilities.IsSuccess(status);

Checking if HttpStatusCode represents success or failure

I have the following String Array:

    var stringArray:[String] = [&quot;value1&quot;, &quot;value2&quot;, &quot;value3&quot;, &quot;value4&quot;]


how can I replace for example the third String with index 2 (&quot;value 3&quot;) with another string?



Swift: Replace String array at index

I have the following String Array:
<pre><code class="hljs language-less">var stringArray:[String] = ["value1", "value2", "value3", "value4"]
</code></pre>
how can I replace for example the third String with index 2 ("value 3") with another string?

The following code in Swift raises NSInvalidArgumentException exception:

    task = NSTask()
    task.launchPath = &quot;/SomeWrongPath&quot;
    task.launch()

How can I catch the exception? As I understand, try/catch in Swift is for errors thrown within Swift, not for NSExceptions raised from objects like NSTask (which I guess is written in ObjC). I&#39;m new to Swift so may be I&#39;m missing something obvious...

**Edit**: here&#39;s a radar for the bug (specifically for NSTask): [openradar.appspot.com/22837476][1]


  [1]: http://openradar.appspot.com/22837476

Catching NSException in Swift

I have `ViewController` with 2 `UITextField` elements: Login and Password. I set delegate for these fields, which includes code below:

    func textFieldShouldReturn(textField: UITextField) -&gt; Bool {
        if textField === self.loginField {
            self.loginField.resignFirstResponder()
            self.passwordField.becomeFirstResponder()
            return false
        }
        
        return true
    }

This logic should switch user from login text field to password when he presses Next button on keyboard. But I stuck with glitch: after

    self.passwordField.becomeFirstResponder()

text in login field jumps to the top left corner and back. And what&#39;s more strange: this glitch reproduces only first time, then you need recreate `ViewController` to observe this behavior

Here is video of the glitch http://tinypic.com/player.php?v=6nsemw%3E&amp;s=8#.VgVb3cuqpHx

I ended up with this:
==============
    func textFieldShouldReturn(textField: UITextField) -&gt; Bool {
        if textField === self.loginField {
            self.loginField.resignFirstResponder()
            // Shitty workaround. Hi, Apple!
            self.loginField.setNeedsLayout()
            self.loginField.layoutIfNeeded()
            
            self.passwordField.becomeFirstResponder()
            return false
        }
        
        return true
    }

UITextField text jumps

I&#39;m trying to make the actionsheet as it shows in the messages app on iOS when we try to attach an image as in the screenshot.

I realized in new UIAlertController, we can&#39;t fit any custom views. Any way I can make exactly this?

My code looks pretty standard.

        let alertController = UIAlertController(title: &quot;My AlertController&quot;, message: &quot;tryna show some images here man&quot;, preferredStyle: UIAlertControllerStyle.ActionSheet)
        
            let okAction = UIAlertAction(title: &quot;oks&quot;, style: .Default) { (action: UIAlertAction) -&gt; Void in
            alertController.dismissViewControllerAnimated(true, completion: nil)
        }
        let cancelAction = UIAlertAction(title: &quot;Screw it!&quot;, style: .Cancel) { (action: UIAlertAction) -&gt; Void in
            alertController.dismissViewControllerAnimated(true, completion: nil)
        }
        
        alertController.addAction(okAction)
        alertController.addAction(cancelAction)
        
        self.presentViewController(alertController, animated: true, completion: nil)


[![enter image description here][1]][1]


  [1]: http://i.stack.imgur.com/kGBzB.jpg

UIAlertController - add custom views to actionsheet

I have written this code: 

    func getjson() {
            let urlPath = &quot;https://api.whitehouse.gov/v1/petitions.json?limit=100&quot;
            let url = NSURL(string: urlPath)
            let session = NSURLSession.sharedSession()
            let task = session.dataTaskWithURL(url!, completionHandler: {data, response, error -&gt; Void in
                print(&quot;Task completed&quot;)
                if(error != nil) {
                    print(error!.localizedDescription)
                }
                let err: NSError?
                if let jsonResult = try NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableContainers) as? NSDictionary {
                    if(err != nil) {
                        print(&quot;JSON Error \(err!.localizedDescription)&quot;)
                    }
                    if let results: NSArray = jsonResult[&quot;results&quot;] as? NSArray {
                        dispatch_async(dispatch_get_main_queue(), {
                            self.tableData = results
                            self.Indextableview.reloadData()
                        })
                    }
                }
            })
        
            task.resume()
        
        }
And after update to XCode 7 it gives me this error: Invalid conversion from throwing function of type (_, _, _) throws -&gt; Void to non-throwing function type (NSData?, NSURLResponse?, NSError?) -&gt; Void. It is in line, where is let task.

Thanks

Invalid conversion from throwing function of type (_,_,_) throws -&gt; Void to non-throwing function type (NSData?, NSURLResponse?, NSError?) -&gt; Void

In my test I have a text field with a pre-existing text. I want to delete the content and type a new string.

    let textField = app.textFields
    textField.tap()
    // delete &quot;Old value&quot;
    textField.typeText(&quot;New value&quot;)

When deleting string with hardware keyboard Recording generated for me nothing. After doing the same with software keyboard I got:

    let key = app.keys[&quot;Usuń&quot;] // Polish name for the key
    key.tap()
    key.tap() 
    ... // x times

or

    app.keys[&quot;Usuń&quot;].pressForDuration(1.5)

I was worried that my test is language-dependent so I have created something like this for my supported languages:

    extension XCUIElementQuery {
        var deleteKey: XCUIElement {
            get {
                // Polish name for the key
                if self[&quot;Usuń&quot;].exists {
                    return self[&quot;Usuń&quot;]
                } else {
                    return self[&quot;Delete&quot;]
                }
            }
        }
    }

It looks nicer in code:

    app.keys.deleteKey.pressForDuration(1.5)

but it is very fragile. After quitting from Simulator `Toggle software keyboard` was reset and I&#39;ve got a failing test. My solution doesn&#39;t work well with CI testing. How can this be solved to be more universal?

Content Type	Original Author	Original Content on Stackoverflow
Question	user3143691	View Question on Stackoverflow
Solution 1 - Swift	Adam	View Answer on Stackoverflow

Swift: Replace String array at index

Swift Problem Overview

Swift Solutions

Solution 1 - Swift

Checking if HttpStatusCode represents success or failure

What's the tabindex="-1" in bootstrap for

Attributions