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Remove all child elements of a DOM node in JavaScript
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From jQuery these two issues might be considered: This method removes not only child (and other descendant) elements, but also any text within the set of matched elements. This is because, according to the DOM specification, ...
Django filter versus get for single object?
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You can install a module called django-annoying and then do this:
from annoying.functions import get_object_or_None
obj = get_object_or_None(MyModel, id=1)
if not obj:
#omg the object was not found do some error stuff
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Python, Unicode, and the Windows console
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Note: This answer is sort of outdated (from 2008). Please use the solution below with care!!
Here is a page that details the problem and a solution (search the page for the text Wrapping sys.stdout into an instance):
PrintFails - Python Wiki
Here's a code exc...
Why git can't do hard/soft resets by path?
...for a path, replacing both the index and the working tree with the version from the HEAD commit.
– Dan Fabulich
Oct 5 '12 at 8:18
1
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Error : BinderProxy@45d459c0 is not valid; is your activity running?
...vity is being destroyed.
I was seeing this error reported once in a while from some of my apps when the activity calling the dialog was finishing for some reason or another when it tried to show a dialog. Here's what solved it for me:
if(!((Activity) context).isFinishing())
{
//show dialog
}
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What's the difference between == and .equals in Scala?
...he AnyRef.equals(Any) method is the one overridden by subclasses. A method from the Java Specification that has come over to Scala too. If used on an unboxed instance, it is boxed to call this (though hidden in Scala; more obvious in Java with int->Integer). The default implementation merely comp...
How do I capture SIGINT in Python?
...SIGINT, signal_handler)
print('Press Ctrl+C')
signal.pause()
Code adapted from here.
More documentation on signal can be found here.
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Difference between SurfaceView and View?
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From your answer I get the feeling it is better to use a class derived from View than SurfaceView. Or am I getting something wrong? This would be opposed to the majority of 2D game development tutorials.
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What's the difference between Invoke() and BeginInvoke()
....BeginInvoke is easier to get right, and will avoid your background thread from having to wait for no good reason. Note that the Windows Forms team has guaranteed that you can use Control.BeginInvoke in a "fire and forget" manner - i.e. without ever calling EndInvoke. This is not true of async calls...
Keep overflow div scrolled to bottom unless user scrolls up
...naccuracy. So isScrolledToBottom will be true even if the scrollbar is 1px from the bottom. You can set this to whatever feels right to you.
Then it's simply a matter of setting the scrollTop of the element to the bottom.
if(isScrolledToBottom)
out.scrollTop = out.scrollHeight - out.clientHeig...