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Iterate over the lines of a string
... based approach -- still, worth keeping in mind because it might be less prone to small off-by-one bugs (any loop where you see occurrences of +1 and -1, like my f3 above, should automatically trigger off-by-one suspicions -- and so should many loops which lack such tweaks and should have them -- th...
What is the fastest/most efficient way to find the highest set bit (msb) in an integer in C?
...to something reasonably efficient for your current platform, whether it be one of those fancy bit-twiddling algorithms, or a single instruction.
A useful trick if your input can be zero is __builtin_clz(x | 1): unconditionally setting the low bit without modifying any others makes the output 31 f...
Why do we need break after case statements?
...s bad style to "fall through" and have multiple blocks of code execute for one case, but there may be uses for it in some situations.
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How to JSON serialize sets?
...oleans, and null), so anything serialized in JSON needs to be expressed as one of these types.
As shown in the json module docs, this conversion can be done automatically by a JSONEncoder and JSONDecoder, but then you would be giving up some other structure you might need (if you convert sets to a ...
Passing functions with arguments to another function in Python?
... What about named parameters? That is, def action1(arg1, arg2=None, arg3=None), how could you pass an argument that you intend to be assigned to arg3, for instance?
– ChaimKut
Aug 19 '14 at 9:54
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How do I pass command line arguments to a Node.js program?
...le.log(index + ': ' + val);
});
This will generate:
$ node process-2.js one two=three four
0: node
1: /Users/mjr/work/node/process-2.js
2: one
3: two=three
4: four
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“tag already exists in the remote" error after recreating the git tag
... so I am adding a note here. If you replace a tag on a central server, anyone who has the old tag—any clone of that central-server repository that already has the tag—could retain its old tag. So while this tells you how to do it, be really sure you want to do it. You'll need to get everyone ...
Convert a Unix timestamp to time in JavaScript
... numbers far more efficiently than strings. When string concatenation is done, there's a lot of memory management going on in the background. (However, if you're already doing a string concatenation anyway, then including a few extra characters in one of the strings might actually be less costly o...
Number of lines in a file in Java
... You can see that countLinesOld has a few outliers, and countLinesNew has none and while it's only a bit faster, the difference is statistically significant. LineNumberReader is clearly slower.
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sudo echo “something” >> /etc/privilegedFile doesn't work
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I absolutely prefer this one. It's just the simplest (and it tought me about tee, which comes in handy in other scenarios as well).
– Joachim Sauer
Apr 8 '09 at 19:00
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