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What is thread contention?
...he most obvious example of contention is on a lock. If thread A has a lock and thread B wants to acquire that same lock, thread B will have to wait until thread A releases the lock.
Now, this is platform-specific, but the thread may experience slowdowns even if it never has to wait for the other th...
How to get innerHTML of DOMNode?
...of the element, without having to use saveHTML that will output html, head and body tags.
– CONvid19
May 18 '16 at 14:53
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How do I check/uncheck all checkboxes with a button using jQuery?
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This will not work anymore, .toggle(handler, handler) was deprecated in jQuery 1.8 and removed in jQuery 1.9. Now all it does is toggles visibility.
– Himel Das
Apr 7 '16 at 14:59
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How to read the RGB value of a given pixel in Python?
... be many different formats.
pix = im.load()
print im.size # Get the width and hight of the image for iterating over
print pix[x,y] # Get the RGBA Value of the a pixel of an image
pix[x,y] = value # Set the RGBA Value of the image (tuple)
im.save('alive_parrot.png') # Save the modified pixels as ...
Can I set variables to undefined or pass undefined as an argument?
I’m a bit confused about JavaScript’s undefined and null values.
10 Answers
10...
Remove 'a' from legend when using aesthetics and geom_text
... this was not that obvious. A proper example would have used the OP's code and just added the missing argument like this:
..
geom_text(aes(label=Species), show_guide = F) +
..
share
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improve this...
How to check whether a string is a valid HTTP URL?
There are the Uri.IsWellFormedUriString and Uri.TryCreate methods, but they seem to return true for file paths etc.
9...
[] and {} vs list() and dict(), which is better?
I understand that they are both essentially the same thing, but in terms of style, which is the better (more Pythonic) one to use to create an empty list or dict?
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Is there a “goto” statement in bash?
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No, there is not; see §3.2.4 "Compound Commands" in the Bash Reference Manual for information about the control structures that do exist. In particular, note the mention of break and continue, which aren't as flexible as goto, but are more flexible in Bash than in som...
What is this weird colon-member (“ : ”) syntax in the constructor?
...mber bar to a value num.
What is the difference between Initializing and Assignment inside a constructor?
Member Initialization:
Foo(int num): bar(num) {};
Member Assignment:
Foo(int num)
{
bar = num;
}
There is a significant difference between Initializing a member using Member in...