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How can I measure the actual memory usage of an application or process?
...zing these files is massif-visualizer. But I found ms_print, a simple text-based tool shipped with Valgrind, to be of great help already.
To find memory leaks, use the (default) memcheck tool of valgrind.
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How to display a content in two-column layout in LaTeX?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Sorting object property by values
...foo", value:116}]
Jsfiddle with the code above is here. This solution is based on this article.
Updated fiddle for sorting strings is here. You can remove both additional .toLowerCase() conversions from it for case sensitive string comparation.
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Truncating floats in Python
...using the IEEE floating-point format into the sequence of bits (assuming a 64-bit float)
0011111111010011001100110011001100110011001100110011001100110011
This is the closest value to 0.3 that can accurately be represented as an IEEE float. But if you write 0.29999999999999998 in a Python program,...
How do you specify that a class property is an integer?
... there is a bug in the VS plugin that is suggesting invalid types, perhaps based on the ECMA 262 list of reserved keywords (which includes "int")
– Josh
Oct 15 '12 at 21:09
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Fast stable sorting algorithm implementation in javascript
...lyfill to implement a stable sort regardless of the native implementation, based on the assertion made in this answer:
// ECMAScript 5 polyfill
Object.defineProperty(Array.prototype, 'stableSort', {
configurable: true,
writable: true,
value: function stableSort (compareFunction) {
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Detecting endianness programmatically in a C++ program
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I don't like the method based on type punning - it will often be warned against by compiler. That's exactly what unions are for !
bool is_big_endian(void)
{
union {
uint32_t i;
char c[4];
} bint = {0x01020304};
return b...
How do I replace NA values with zeros in an R dataframe?
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The dplyr hybridized options are now around 30% faster than the Base R subset reassigns. On a 100M datapoint dataframe mutate_all(~replace(., is.na(.), 0)) runs a half a second faster than the base R d[is.na(d)] <- 0 option. What one wants to avoid specifically is using an ifelse() or ...
How to get object size in memory? [duplicate]
...sure. It is an internal implementation detail and not documented. However, based on the objects included in the other object. Now, how do we calculate the memory requirement for our cached objects?
I had previously touched this subject in this article:
Now, how do we calculate the memory requir...
How to read a single char from the console in Java (as the user types it)?
...le input in Python and Java. Excerpt:
If your program must be console based,
you have to switch your terminal out
of line mode into character mode, and
remember to restore it before your
program quits. There is no portable
way to do this across operating
systems.
One of the sugges...