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How do I find the location of the executable in C? [duplicate]
...me/where/else/foo # create a hard link to foo
$ /some/where/else/foo
Now, the approach above (including, I suspect, /proc/$pid/exe) will give /some/where/else/foo as the real path to the program. And, in fact, it is a real path to the program, just not the one you wanted. Note that this prob...
How to check if a file is a valid image file?
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excellent advice, now i just need to figure out what those numbers are. thanks :)
– Sujoy
May 20 '09 at 18:11
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Converting camel case to underscore case in ruby
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If you change tr("-","_") to tr("- ","_") (space added to first param), this will also turn spaces into underscores. Also, I don't think you even need to include self., or at least it works for me under Ruby 1.9.3.
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How to tell if a tag failed to load
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The "onload" listener will be fired even if there's a javascript error.
– Luca Matteis
Feb 11 '09 at 21:38
38
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Can I zip more than two lists together in Scala?
...s of arbitrary size, but the transpose function does exactly what you need if you don't mind getting a list of lists instead.
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Why is pow(a, d, n) so much faster than a**d % n?
...into the future". Note, though, that the optimization could be extremely difficult or even impossible in general. For constant operands it could be optimized, but in x ** y % n, x could be an object that implements __pow__ and, based on a random number, returns one of several different objects imp...
Mercurial .hgignore for Visual Studio 2008 projects
...re's my standard .hgignore file for use with VS2008 that was originally modified from a Git ignore file:
# Ignore file for Visual Studio 2008
# use glob syntax
syntax: glob
# Ignore Visual Studio 2008 files
*.obj
*.exe
*.pdb
*.user
*.aps
*.pch
*.vspscc
*_i.c
*_p.c
*.ncb
*.suo
*.tlb
*.tlh
*.bak
*....
Efficient way to determine number of digits in an integer
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Well, the most efficient way, presuming you know the size of the integer, would be a lookup. Should be faster than the much shorter logarithm based approach. If you don't care about counting the '-', remove the + 1.
// generic solution
template <class T>
int nu...
How to test if a string is basically an integer in quotes using Ruby
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I know a lot of people use it, and it's certainly aesthetically pleasing. To me though it's an indication that the code needs restructuring. If you're expecting an exception...it's not an exception.
– Sarah...
Python: Find in list
... you describe: Checking whether something is inside a list or not. As you know, you can use the in operator for that:
3 in [1, 2, 3] # => True
Filtering a collection
That is, finding all elements in a sequence that meet a certain condition. You can use list comprehension or generator expressi...