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How to grey out a button?

... disabled by setting the alpha (making it semi-transparent). This is especially useful if your button background is an image, and you don't want to create states for it. button.setAlpha(.5f); button.setClickable(false); update: I wrote the above solution pre Kotlin and when I was a rookie. It's m...
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Swift - encode URL

...= "test/test" let escapedString = originalString.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed) print(escapedString!) Output: test%2Ftest Swift 1 In iOS 7 and above there is stringByAddingPercentEncodingWithAllowedCharacters var originalString = "test/test" var escapedString...
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How to “grep” for a filename instead of the contents of a file?

...ts of the file). I will run this from the system's root directory, to find all those files that match the regular expression. ...
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Hide the cursor of an UITextField

...irst, store the text field's selected text range to an instance variable. _textFieldSelectedTextRange = textField.selectedTextRange; textField.selectedTextRange = nil; // hides caret Then, when you want to unhide the caret, simply set the text field's selected text range back to what it was origi...
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How to use UIVisualEffectView to Blur Image?

Could someone give a small example of applying the blur to an image? I've been trying to figure out the code for a while now :( still new at obj c! ...
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Get current time in milliseconds in Python?

...illis = int(round(time.time() * 1000)) print millis Quick'n'easy. Thanks all, sorry for the brain fart. For reuse: import time current_milli_time = lambda: int(round(time.time() * 1000)) Then: >>> current_milli_time() 1378761833768 ...
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XMLHttpRequest status 0 (responseText is empty)

... Why is this being downvoted? It is actually true! XHR requests from file:// URLs of files also on file:// URLs actually have status == 0 on success (tested on FF 24.0.5). – Daniel Roethlisberger Dec 31 '14 at 21:20 ...
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How to pass json POST data to Web API method as an object?

... with the result :) }); Model binding works for some properties, but not all ! Why ? If you do not decorate the web api method parameter with [FromBody] attribute [HttpPost] public CreateUserViewModel Save(CreateUserViewModel m) { return m; } And send the model(raw javascript object, not i...
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How to uninstall Python 2.7 on a Mac OS X 10.6.4?

... PATH variable by reverting my .bash_profile . But I also want to remove all directories, files, symlinks, and entries that got installed by the Python 2.7 install package. I've got the install package from http://www.python.org/ . What directories/files/configuration file entries do I need to re...
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ERROR:'keytool' is not recognized as an internal or external command, operable program or batch file

... C:\Program Files\Java\jdk1.6.0_21\bin>keytool -list -alias androiddebugkey -keystore .android\debug.keystore -storepass android -keypass android. the error i got is keytool error: java.lang.Exception: Key...