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Python 'If not' syntax [duplicate]
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Yes, if bar is not None is more explicit, and thus better, assuming it is indeed what you want. That's not always the case, there are subtle differences: if not bar: will execute if bar is any kind of zero or empty container, or False.
Many people do us...
JavaScript sleep/wait before continuing [duplicate]
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JS does not have a sleep function, it has setTimeout() or setInterval() functions.
If you can move the code that you need to run after the pause into the setTimeout() callback, you can do something like this:
//code before the pause
setTimeout(function(){
//do what you need h...
What is the .idea folder?
When I create a project in JetBrains WebStorm, a folder called .idea gets created. Is it okay if I delete it? Will it affect my project?
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Sorting a set of values [closed]
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From a comment:
I want to sort each set.
That's easy. For any set s (or anything else iterable), sorted(s) returns a list of the elements of s in sorted order:
>>> s = set(['0.000000000', '0.009518000', '10.277200999', '0.030810999', '0.018...
How to convert 'binary string' to normal string in Python3?
For example, I have a string like this(return value of subprocess.check_output ):
3 Answers
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Delphi XE custom build target is always disabled
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Delphi generates the entire dproj content itself and this custom import will always be deleted.
You could write your own msbuild xml files but the dproj belongs to Delphi.
Unless you have source code or are willing to monkey patch the ide you cant do that.
If you really want a flexible xm...
Convert string to variable name in python [duplicate]
...he way to do it; just use setattr. And even when setattr is inappropriate for whatever reason, being explicit and modifying locals or globals as appropriate is still better than exec.
– abarnert
Oct 1 '13 at 17:57
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Regex that accepts only numbers (0-9) and NO characters [duplicate]
...[0-9]*$
This accepts any number of digits, including none. To accept one or more digits, change the * to +. To accept exactly one digit, just remove the *.
UPDATE: You mixed up the arguments to IsMatch. The pattern should be the second argument, not the first:
if (!System.Text.RegularExpressions...
How to find out “The most popular repositories” on Github? [closed]
Once upon a time, we can watch the most popular repositories (Most forked or Most watched) at this page ( https://github.com/popular/watched ) of Github. like this:
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numpy matrix vector multiplication [duplicate]
...rrays of sizes (n x n)*(n x 1), I get a matrix of size (n x n). Following normal matrix multiplication rules, a (n x 1) vector is expected, but I simply cannot find any information about how this is done in Python's Numpy module.
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