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How to check if array is empty or does not exist? [duplicate]
What's the best way to check if an array is empty or does not exist?
1 Answer
1
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How to make/get a multi size .ico file? [closed]
...ke it for use in a cross-platform desktop application (so that, e.g. on Windows, the 16x16 size is used for the app's top bar but a 32x32 size version is used when the various open apps are shown when using Alt-Tab). Once I have that .ico file, I know how to use it within my widget toolkit to get t...
In Python, how do I read the exif data for an image?
I'm using PIL. How do I turn the EXIF data of a picture into a dictionary?
8 Answers
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How to organize large R programs?
...ally short snippets. Everything else should be in a package -- even if you do not plan to publish it as you can write internal packages for internal repositories.
As for the 'how to edit' part, the R Internals manual has excellent R coding standards in Section 6. Otherwise, I tend to use defaults...
ggplot with 2 y axes on each side and different scales
...chart showing counts and a line chart showing rate all in one chart, I can do both of them separately, but when I put them together, I scale of the first layer (i.e. the geom_bar ) is overlapped by the second layer (i.e. the geom_line ).
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How to change the color of a CheckBox?
How do I change the default CheckBox color in Android?
By default the CheckBox color is green, and I want to change this color.
If it is not possible please tell me how to make a custom CheckBox ?
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Why can't I use the 'await' operator within the body of a lock statement?
...s a testament to that fact. Rather, it is an incredibly bad idea and so we don't allow it, so as to protect you from making this mistake.
call to Monitor.Exit within ExitDisposable.Dispose seems to block indefinitely (most of the time) causing deadlocks as other threads attempt to acquire the lo...
How do I find which program is using port 80 in Windows? [duplicate]
How do I find which program is using port 80 in Windows?
6 Answers
6
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Is there a simple way to delete a list element by value?
...gt;> a.remove('b')
>>> print(a)
['a', 'c', 'd']
Mind that it does not remove all occurrences of your element. Use a list comprehension for that.
>>> a = [10, 20, 30, 40, 20, 30, 40, 20, 70, 20]
>>> a = [x for x in a if x != 20]
>>> print(a)
[10, 30, 40, 30, ...
Sending a message to nil in Objective-C
As a Java developer who is reading Apple's Objective-C 2.0 documentation: I wonder what " sending a message to nil " means - let alone how it is actually useful. Taking an excerpt from the documentation:
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