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What is the fastest way to check if a class has a function defined?
...he function looks up the arguments in a dict, finds the result in the dict from when the actual function computed the result, and returns the result right away.
Here is a recipe for a memoizing decorator called "lru_cache" by Raymond Hettinger. A version of this is now standard in the functools mo...
Java 8 Distinct by property
...is ordered and is run in parallel, this will preserve an arbitrary element from among the duplicates, instead of the first one, as distinct() does.
(This is essentially the same as my answer to this question: Java Lambda Stream Distinct() on arbitrary key?)
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How can I bind to the change event of a textarea in jQuery?
...oring this jQuery object outside of the event callback
// prevents jQuery from having to search the DOM for it again
// every time an event is fired.
var $myButton = $("#buttonID")
// input :: for all modern browsers [1]
// selectionchange :: for IE9 [2]
// propertychange :: for <IE9...
What is the use of the %n format specifier in C?
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From here we see that it stores the number of characters printed so far.
n The argument shall be a pointer to an integer into which is written the number of bytes written to the output so far by this call to one of the ...
Preserve line breaks in angularjs
...div>
Or a CSS class can be created for this purpose and can be used from external CSS file
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In Java, what does NaN mean?
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Taken from this page:
"NaN" stands for "not a number". "Nan"
is produced if a floating point
operation has some input parameters
that cause the operation to produce
some undefined result. For example,
0.0 divided by 0...
How to pause for specific amount of time? (Excel/VBA)
...precise, it does not take in account the milliseconds that already elapsed from current time... For example, if there is only 1 milisecond left until the Now seconds changes, you will only sleep for 1 milisecond.
– cyberponk
Nov 20 '18 at 11:19
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How to write log base(2) in c/c++
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There is also a nice bit-twiddling method for this (taken from Java's Integer.highestOneBit(int) method): i |= (i >> 1); i |= (i >> 2); i |= (i >> 4); i |= (i >> 8); i |= (i >> 16); return i - (i >>> 1);
– Joey
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How should I escape strings in JSON?
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Extract From Jettison:
public static String quote(String string) {
if (string == null || string.length() == 0) {
return "\"\"";
}
char c = 0;
int i;
int ...
Trigger a keypress/keydown/keyup event in JS/jQuery?
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First of all, I need to say that sample from Sionnach733 worked flawlessly. Some users complain about absent of actual examples. Here is my two cents. I've been working on mouse click simulation when using this site: https://www.youtube.com/tv. You can open any vi...