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Difference between static memory allocation and dynamic memory allocation
... application to crash, since at some point of time, system cannot allocate more memory.
int* func() {
int* mem = malloc(1024);
return mem;
}
int* mem = func(); /* still accessible */
In the upper example, the allocated memory is still valid and accessible, even though the function termin...
How to disable Google Chrome auto update?
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167
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javascript set a variable if undefined
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I'm surprised this pattern isn't included in more JS libs.
– joemaller
Feb 15 '13 at 19:25
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Pandas read_csv low_memory and dtype options
...or long() with base 10: 'foobar'
dtypes are typically a numpy thing, read more about them here:
http://docs.scipy.org/doc/numpy/reference/generated/numpy.dtype.html
What dtypes exists?
We have access to numpy dtypes: float, int, bool, timedelta64[ns] and datetime64[ns]. Note that the numpy date/tim...
How to convert a factor to integer\numeric without loss of information?
...l numeric
values, as.numeric(levels(f))[f] is
recommended and slightly more
efficient than
as.numeric(as.character(f)).
The FAQ on R has similar advice.
Why is as.numeric(levels(f))[f] more efficent than as.numeric(as.character(f))?
as.numeric(as.character(f)) is effectively as.numeric...
Get Folder Size from Windows Command Line
...signed integer arithmetic. So it will get sizes above 2 GiB wrong1. Furthermore it will likely count symlinks and junctions multiple times so it's at best an upper bound, not the true size (you'll have that problem with any tool, though).
An alternative is PowerShell:
Get-ChildItem -Recurse | Measur...
Is Python strongly typed?
...ent about this by default.)
I must add that the strong vs. weak typing is more of a continuum than a boolean choice. C++ has stronger typing than C (more conversions required), but the type system can be subverted by using pointer casts.
The strength of the type system in a dynamic language such a...
How can I concatenate regex literals in JavaScript?
...e + expression_two.source, flags);
// regex3 is now /foobar/gy
It's just more wordy than just having expression one and two being literal strings instead of literal regular expressions.
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CSS: bolding some text without changing its container's size
...ion, although I recommend flipping that one to 1px 0px 0px. Looks a little more bold-like.
– M. Herold
Mar 28 '13 at 0:34
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Easiest way to split a string on newlines in .NET?
...different types of line breaks in a text, you can use the ability to match more than one string. This will correctly split on either type of line break, and preserve empty lines and spacing in the text:
string[] lines = theText.Split(
new[] { "\r\n", "\r", "\n" },
StringSplitOptions.None
);...