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How to convert a boolean array to an int array
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Numpy arrays have an astype method. Just do y.astype(int).
Note that it might not even be necessary to do this, depending on what you're using the array for. Bool will be autopromoted to int in many cases, so you can add it to int arrays without having to explicit...
Capture keyboardinterrupt in Python without try-except
... issues with the signal module -- shouldn't affect this poster, but "On Windows, signal() can only be called with SIGABRT, SIGFPE, SIGILL, SIGINT, SIGSEGV, or SIGTERM. A ValueError will be raised in any other case."
– bgporter
Nov 17 '10 at 14:39
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What do single quotes do in C++ when used on multiple characters?
... Is the length of such a multi-byte character constrained to 4 bytes? I.e. does it represent an int written out as characters?
– Giorgio
Sep 18 '11 at 8:47
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Regular expression to match a line that doesn't contain a word
... other tools (e.g. grep -v ). However, is it possible to match lines that do not contain a specific word, e.g. hede , using a regular expression?
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How do you get the current time of day?
How do you get the current time (not date AND time)?
19 Answers
19
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Adding a directory to $LOAD_PATH (Ruby)
...urrently being executed to the $LOAD_PATH (or $:). I see the advantages of doing this in case you're not working with a gem. One seems more verbose than the other, obviously, but is there a reason to go with one over the other?
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Hyphen, underscore, or camelCase as word delimiter in URIs?
...core is a word character, meaning it should be considered part of a word.
Double-click this in Chrome: camelCase
Double-click this in Chrome: under_score
Double-click this in Chrome: hyphen-ated
See how Chrome (I hear Google makes a search engine too) only thinks one of those is two words?
came...
What does -D_XOPEN_SOURCE do/mean?
...on. I did find XOPEN_SOURCE , but there was little explanation of what it does.
4 Answers
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Rails: how do I validate that something is a boolean?
Does rails have a validator like validates_numericality_of for boolean or do I need to roll my own?
5 Answers
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How to pass prepareForSegue: an object
...= [segue destinationViewController];
// Get button tag number (or do whatever you need to do here, based on your object
NSInteger tagIndex = [(UIButton *)sender tag];
// Pass the information to your destination view
[vc setSelectedButton:tagIndex];
}
}
EDIT: ...