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Check if PHP session has already started
I have a PHP file that is sometimes called from a page that has started a session and sometimes from a page that doesn't have session started. Therefore when I have session_start() on this script I sometimes get the error message for "session already started". For that I've put these lines:
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How do I parallelize a simple Python loop?
This is probably a trivial question, but how do I parallelize the following loop in python?
13 Answers
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Pythonic way to check if a list is sorted or not
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Actually we are not giving the answer anijhaw is looking for. Here is the one liner:
all(l[i] <= l[i+1] for i in xrange(len(l)-1))
For Python 3:
all(l[i] <= l[i+1] for i in range(len(l)-1))
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git: How to ignore all present untracked files?
Is there a handy way to ignore all untracked files and folders in a git repository?
(I know about the .gitignore .)
8 An...
Equivalent C++ to Python generator pattern
...to signal termination
In your trivial example, it's easy enough. Conceptually:
struct State { unsigned i, j; };
State make();
void next(State&);
bool isDone(State const&);
Of course, we wrap this as a proper class:
class PairSequence:
// (implicit aliases)
public std::iterat...
How do I auto-hide placeholder text upon focus using css or jquery?
This is done automatically for every browser except Chrome .
26 Answers
26
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RestSharp simple complete example [closed]
I've been trying to create a simple prototype web application that uses RestSharp to call Rest API.
3 Answers
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Rename a dictionary key
... this question seems to be asking, is impractical because dict keys are usually immutable objects such as numbers, strings or tuples. Instead of trying to modify the key, reassigning the value to a new key and removing the old key is how you can achieve the "rename" in python.
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Blocks on Swift (animateWithDuration:animations:completion:)
... dat completion block syntax :(
– Chris Allinson
Sep 25 '16 at 0:19
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libpng warning: iCCP: known incorrect sRGB profile
...geMagick's
convert in.png out.png
To remove the invalid iCCP chunk from all of the PNG files in a folder (directory), you can use mogrify from ImageMagick:
mogrify *.png
This requires that your ImageMagick was built with libpng16. You can easily check it by running:
convert -list format | gre...