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In Python, using argparse, allow only positive integers
... case, you can also use the choices parameter if your upper limit is also known:
parser.add_argument('foo', type=int, choices=xrange(5, 10))
Note: Use range instead of xrange for python 3.x
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What does {0} mean when initializing an object?
...cted non-static data members, no base classes, and no virtual functions.
Now, using {0} to initialize an aggregate like this is basically a trick to 0 the entire thing. This is because when using aggregate initialization you don't have to specify all the members and the spec requires that all uns...
SQL Data Reader - handling Null column values
...ex))
return reader.GetString(colIndex);
return string.Empty;
}
Now you can call it like this:
employee.FirstName = SqlReader.SafeGetString(indexFirstName);
and you'll never have to worry about an exception or a null value again.
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Make an existing Git branch track a remote branch?
I know how to make a new branch that tracks remote branches, but how do I make an existing branch track a remote branch?
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MD5 algorithm in Objective-C
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Thanks! Patched it up now. This was never a problem for me since in the original implementation, I always ran it in a dedicated thread ;)
– Alexander W
Oct 10 '14 at 8:59
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Convert float to double without losing precision
...point (for example, 0.1). So you either must always round the result to a known precision or use BigDecimal.
See http://en.wikipedia.org/wiki/Floating_point for more information.
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Regex how to match an optional character
I have a regex that I thought was working correctly until now. I need to match on an optional character. It may be there or it may not.
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How to count total number of watches on a page?
...e is better (in that it found more watches) - but I lack intimate angular knowledge to know for sure that mine isn't a proper subset of the solution set.
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How do I convert a float number to a whole number in JavaScript?
...to convert a float to a whole number in JavaScript. Actually, I'd like to know how to do BOTH of the standard conversions: by truncating and by rounding. And efficiently, not via converting to a string and parsing.
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Fastest way to check if string contains only digits
I know a few ways how to check this.
regex, int.parse , tryparse ,looping.
18 Answers
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