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How to tell if a string contains a certain character in JavaScript?
I have a page with a textbox where a user is supposed to enter a 24 character (letters and numbers, case insensitive) registration code. I used maxlength to limit the user to entering 24 characters.
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Converting strings to floats in a DataFrame
...es conversion (or set's to nan)
This will work even when astype will fail; its also series by series
so it won't convert say a complete string column
In [10]: df = DataFrame(dict(A = Series(['1.0','1']), B = Series(['1.0','foo'])))
In [11]: df
Out[11]:
A B
0 1.0 1.0
1 1 foo
In [12]...
Heroku free account limited?
...dpress as my blog engine on free hosting, but I'm planning to move to use git-based blog engine(Jekyll, Toto) on Ruby platform. Then I see Heroku provides free account features, but I don't see any detail on bandwidth, disk spaces, requests?
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Matlab: Running an m-file from command-line
...lay -nosplash -nodesktop -r "run('C:\<a long path here>\mfile.m'); exit;"
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How do you check whether a number is divisible by another number (Python)?
...s would be to divide the number by 3, and if the result is an integer then it would be a multiple of 3. Same with 5.
10 An...
Only one expression can be specified in the select list when the subquery is not introduced with EXI
My query is as follows, and contains a subquery within it:
4 Answers
4
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Finding Variable Type in JavaScript
...n Java, you can use instanceOf or getClass() on a variable to find out its type.
9 Answers
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How to include() all PHP files from a directory?
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I would build a proper module system with a configuration file, but that's just because I find that much more flexible than just including everything. :-)
– staticsan
Mar 2 '09 at 0:01
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what is .netrwhist?
When I edit files in my ~/.vim , the .netrwhist file would mysteriously be changed, too.
4 Answers
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Regex expressions in Java, \\s vs. \\s+
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The first one matches a single whitespace, whereas the second one matches one or many whitespaces. They're the so-called regular expression quantifiers, and they perform matches like this (taken from the documentation):
Greedy quantifiers
X? X, once or not...