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How to convert a negative number to positive?
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edited Oct 5 '10 at 23:28
answered Oct 4 '10 at 10:26
Rog...
Abusing the algebra of algebraic data types - why does this work?
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Will Ness
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answered Feb 8 '12 at 16:51
C. A. McCannC. A. ...
What is the difference between “JPG” / “JPEG” / “PNG” / “BMP” / “GIF” / “TIFF” Image?
...s. Examples of lossless image compression is PNG and GIF. (GIF only allows 8-bit images.)
TIFF and BMP are both "wrapper" formats, as the data inside can depend upon the compression technique that is used. It can contain both compressed and uncompressed images.
When to use a certain image compress...
How do I convert between big-endian and little-endian values in C++?
...bit numbers:
unsigned __int64 _byteswap_uint64(unsigned __int64 value);
8 bit numbers (chars) don't need to be converted.
Also these are only defined for unsigned values they work for signed integers as well.
For floats and doubles it's more difficult as with plain integers as these may or not ...
python numpy machine epsilon
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ali_mali_m
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Ruby: How to get the first character of a string
...ial # prints S
The other method mentioned here doesn't work on Ruby 1.8 (not that you should be using 1.8 anymore anyway!--but when this answer was posted it was still quite common):
puts 'Smith'[0] # prints 83
Of course, if you're not doing it on a regular basis, then defining the...
Postgresql aggregate array
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edited Jun 13 '12 at 23:18
answered Jun 7 '12 at 8:56
Mich...
How to get unique values in an array
...);
}
}
return arr;
}
var duplicates = [1, 3, 4, 2, 1, 2, 3, 8];
var uniques = duplicates.unique(); // result = [1,3,4,2,8]
console.log(uniques);
For more reliability, you can replace contains with MDN's indexOf shim and check if each element's indexOf is equal to -1: docume...
Java: Best way to iterate through a Collection (here ArrayList)
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answered Mar 8 '11 at 5:31
MAKMAK
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How to check if a line is blank using regex
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answered Jun 10 '10 at 8:35
polygenelubricantspolygenelubricants
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