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Reference: What is variable scope, which variables are accessible from where and what are “undefined

... be in the global scope in a.php doesn't necessarily mean they are, it actually depends on which context that code is included/executed in. What about functions inside functions and classes? Every new function declaration introduces a new scope, it's that simple. (anonymous) functions inside func...
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Android: failed to convert @drawable/picture into a drawable

In my drawable folder I have a few images and they all reference perfect, but when I try and add any more images with the exact same size in the same folder, and try to reference it, is flags up an error "Failed to convert @drawable/picture into a drawable" . I have tried the same image with a diff...
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Trying to mock datetime.date.today(), but not working

... There are a few problems. First of all, the way you're using mock.patch isn't quite right. When used as a decorator, it replaces the given function/class (in this case, datetime.date.today) with a Mock object only within the decorated function. So, only within...
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How do I list all files of a directory?

How can I list all files of a directory in Python and add them to a list ? 21 Answers ...
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Close iOS Keyboard by touching anywhere using Swift

I have been looking all over for this but I can't seem to find it. I know how to dismiss the keyboard using Objective-C but I have no idea how to do that using Swift ? Does anyone know? ...
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django-debug-toolbar not showing up

... to settings.py: def show_toolbar(request): return True SHOW_TOOLBAR_CALLBACK = show_toolbar That will effectively remove all checks by debug toolbar to determine if it should or should not load itself; it will always just load. Only leave that in for testing purposes, if you forget and launc...
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Where is debug.keystore in Android Studio

... go to "signing" and select your default or any keystore you want and fill all the details. In case you are not able to fill the details, hit the green '+' button. I've highlighted in the screenshot. Step 2) VERY IMPORTANT: Goto Build Types> select your build type and select your "Signing Config...
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What's the difference between Unicode and UTF-8? [duplicate]

... most editors support save as ‘Unicode’ encoding actually. This is an unfortunate misnaming perpetrated by Windows. Because Windows uses UTF-16LE encoding internally as the memory storage format for Unicode strings, it considers this to be the natural encoding of Unicode tex...
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How do you serve a file for download with AngularJS or Javascript?

...|ftp|mailto|tel|file|blob):/); }]); Please note that Each time you call createObjectURL(), a new object URL is created, even if you've already created one for the same object. Each of these must be released by calling URL.revokeObjectURL() when you no longer need them. Browsers will release t...
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You need to use a Theme.AppCompat theme (or descendant) with this activity

...a subclass, ActionBarActivity), to Activity, must also change the various calls with "support" to the corresponding call without "support". So, instead of getSupportFragmentManager, call getFragmentManager. share |...