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.gitignore and “The following untracked working tree files would be overwritten by checkout”
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What's the difference between `1L` and `1`?
I often seen the symbol 1L (or 2L , 3L , etc) appear in R code. Whats the difference between 1L and 1 ? 1==1L evaluates to TRUE . Why is 1L used in R code?
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Jenkins / Hudson environment variables
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What is the difference between Python and IPython?
...e, high performance tools for parallel computing.
Note that the first 2 lines tell you it helps you make the most of using Python. Thus, you don't need to alter your code, the IPython shell runs your python code just like the normal python shell does, only with more features.
I recommend readi...
Adding two numbers concatenates them instead of calculating the sum
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Is gcc 4.8 or earlier buggy about regular expressions?
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edited Sep 28 '15 at 23:06
Lightness Races in Orbit
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How can I get stock quotes using Google Finance API?
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Right leg
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answered Feb 9 '09 at 11:25
cletuscletus
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What are “first class” objects?
...cos = makeDerivative( Math.sin, 0.000001);
// cos(0) ~> 1
// cos(pi/2) ~> 0
Source.
Entities that are not first class objects are referred to as second-class objects. Functions in C++ are second class because they can't be dynamically created.
Regarding the edit:
EDIT. When one ...
Java: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification
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Why Large Object Heap and why do we care?
...n the array has more than 1000 elements. That's another optimization for 32-bit code, the large object heap allocator has the special property that it allocates memory at addresses that are aligned to 8, unlike the regular generational allocator that only allocates aligned to 4. That alignment is ...