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Fastest way to check a string contain another substring in JavaScript?
...h a performance issue on JavaScript. So I just want to ask: what is the fastest way to check whether a string contains another substring (I just need the boolean value)? Could you please suggest your idea and sample snippet code?
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What is unit testing? [closed]
I saw many questions asking 'how' to unit test in a specific language, but no question asking 'what', 'why', and 'when'.
20...
How to elegantly rename all keys in a hash in Ruby? [duplicate]
...at! Now, if I only want to change some of the key names, is there a way to test if a mapping exist for the key?
– Chanpory
Nov 9 '10 at 20:18
28
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Practical usage of setjmp and longjmp in C
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setjmp and longjmp can be very useful in unit testing.
Suppose we want to test the following module:
#include <stdlib.h>
int my_div(int x, int y)
{
if (y==0) exit(2);
return x/y;
}
Normally, if the function to test calls another function, you can decla...
Is object empty? [duplicate]
What is the fastest way to check if an object is empty or not?
23 Answers
23
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Is there a foreach in MATLAB? If so, how does it behave if the underlying data changes?
...ing iterations, a WHILE loop may be more appropriate --- you'll be able to test the loop condition at every iteration, and set the value of the loop variable(s) as you wish:
n = 10;
f = n;
while n > 1
n = n-1;
f = f*n;
end
disp(['n! = ' num2str(f)])
Btw, the for-each loop in Java (and ...
Best way to detect Mac OS X or Windows computers with JavaScript or jQuery
...r.platform property is not spoofed when the userAgent string is changed.
I tested on my Mac if I change the userAgent to iPhone or Chrome Windows, navigator.platform remains MacIntel.
The property is also read-only
I could came up with the following table
Mac Computers
Mac68K ...
pretty-print JSON using JavaScript
...?\d+)?)/g, function (match) {
var cls = 'number';
if (/^"/.test(match)) {
if (/:$/.test(match)) {
cls = 'key';
} else {
cls = 'string';
}
} else if (/true|false/.test(match)) {
cls = 'boolean';
...
Detect blocked popup in Chrome
...rowsers (as described in the answer to this question ). Here's the basic test:
16 Answers
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Fastest way to check if a file exist using standard C++/C++11/C?
I would like to find the fastest way to check if a file exist in standard C++11, C++, or C. I have thousands of files and before doing something on them I need to check if all of them exist. What can I write instead of /* SOMETHING */ in the following function?
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