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What's Pros and Cons: putting javascript in head and putting just before the body close
...vas had already been loaded to screen before you attempted to write to it. Now if you put the script in the header it wouldn't draw to the canvas because the canvas isn't there yet. So if you add the listener it'll fire your canvas code AFTER the canvas has been loaded.
– Matth...
How can I get the ID of an element using jQuery?
...typically hard-coded into the HTML and JS. When you write JS, you already know the ID of some element, so you write that ID to retrieve the element. You rarely need to get the ID of an element programmatically.
– daniel1426
Apr 30 '14 at 18:07
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How is “=default” different from “{}” for default constructor and destructor?
I originally posted this as a question only about destructors, but now I'm adding consideration of the default constructor. Here's the original question:
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Can't create handler inside thread that has not called Looper.prepare()
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I know I am a little late but here goes.
Android basically works on two thread types namely UI thread and background thread. According to android documentation -
Do not access the Android UI toolkit from outside the UI thre...
Should *.xccheckout files in Xcode5 be ignored under VCS?
...ies, the presence of an .xccheckout file in the workspace allows Xcode to know what all of the components that make up a workspace are and where to get them.
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Understanding the difference between __getattr__ and __getattribute__
...we do instance.attribute. Sometimes we need more control (when we do not know the name of the attribute in advance).
For example, instance.attribute would become getattr(instance, attribute_name). Using this model, we can get the attribute by supplying the attribute_name as a string.
Use of __ge...
Reference assignment operator in PHP, =&
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It's two different operators. = is assignment as you probably know. And & means the variable should be accessed by reference rather than by value.
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Bare asterisk in function arguments?
...o", 3,5)
>>> test_args_kwargs(*args)
arg1: two
arg2: 3
arg3: 5
# now with **kwargs:
>>> kwargs = {"arg3": 3, "arg2": "two","arg1":5}
>>> test_args_kwargs(**kwargs)
arg1: 5
arg2: two
arg3: 3
So *args allows you to dynamically build a list of arguments that will be taken ...
Python function global variables?
I know I should avoid using global variables in the first place due to confusion like this, but if I were to use them, is the following a valid way to go about using them? (I am trying to call the global copy of a variable created in a separate function.)
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What's the difference between an exclusive lock and a shared lock?
...hing while someone else is reading it, what then would they read? I don't know why you chose to pick out a "re-entrant" read-write lock specifically, but re-entrancy means that the owner of a re-entrant lock can 'lock()' it again and all subsequent lock() calls after the first one will return immedi...