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How does C compute sin() and other math functions?
...lor series. However, this is only accurate near 0, so...
When the angle is more than about 7°, a different algorithm is used, computing Taylor-series approximations for both sin(x) and cos(x), then using values from a precomputed table to refine the approximation.
When |x| > 2, none of the above...
Should I use multiplication or division?
... faster to multiply than to divide, but as you get closer to the CPU using more advanced VMs or JITs, the advantage disappears. It's quite possible that a future Python VM would make it irrelevant
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Do we need semicolon at the end? [duplicate]
...yeah, automatically closing tags isn't really a feature for the devs, it's more a last attempt of the browser to fix your bad code.
– Nearoo
Feb 2 '17 at 19:03
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How to check whether a string is Base64 encoded or not
...th '=' characters.
^([A-Za-z0-9+/]{4})* means the string starts with 0 or more base64 groups.
([A-Za-z0-9+/]{4}|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==)$ means the string ends in one of three forms: [A-Za-z0-9+/]{4}, [A-Za-z0-9+/]{3}= or [A-Za-z0-9+/]{2}==.
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What is the garbage collector in Java?
...hich gets rid of objects which are not being used by a Java application anymore. It is a form of automatic memory management.
When a typical Java application is running, it is creating new objects, such as Strings and Files, but after a certain time, those objects are not used anymore. For example,...
Ruby: Easiest Way to Filter Hash Keys?
... The counterpart to .select is .reject, if that makes your code more idiomatic.
– Joe Atzberger
Aug 20 '16 at 1:23
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On design patterns: When should I use the singleton?
...ators and client side UI's also being possibly "acceptable" choices.
Read more at Singleton I love you, but you're bringing me down.
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How do I check if an integer is even or odd? [closed]
...ve criticized my answer above stating that using x & 1 is "faster" or "more efficient". I do not believe this to be the case.
Out of curiosity, I created two trivial test case programs:
/* modulo.c */
#include <stdio.h>
int main(void)
{
int x;
for (x = 0; x < 10; x++)
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How do I get the real .height() of a overflow: hidden or overflow: scroll div?
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More correctly use $('#your_div').prop('scrollHeight');
– Lyubimov Roman
Aug 26 '14 at 9:22
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How to count the number of occurrences of an element in a List
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This is not what was asked for. It does more work than necessary.
– Alex Worden
Oct 4 '17 at 3:09
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