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How to grep Git commit diffs or contents for a certain word?
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To illustrate the difference between -S<regex> --pickaxe-regex and -G<regex>, consider a commit with the following diff in the same file:
+ return !regexec(regexp, two->ptr, 1, &regmatch, 0);
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- hit = !regexec(regexp, mf2.ptr, 1, &regmatch, 0);
While git ...
Image Greyscale with CSS & re-color on mouse-over?
I am looking to take an icon that is colored (and will be a link) and turn it greyscale until the user places their mouse over the icon (where it would then color the image).
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How to deal with a slow SecureRandom generator?
If you want a cryptographically strong random numbers in Java, you use SecureRandom . Unfortunately, SecureRandom can be very slow. If it uses /dev/random on Linux, it can block waiting for sufficient entropy to build up. How do you avoid the performance penalty?
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Print text instead of value from C enum
...numbers that have convenient names inside your code. They are not strings, and the names assigned to them in the source code are not compiled into your program, and so they are not accessible at runtime.
The only way to get what you want is to write a function yourself that translates the enumerati...
When to use nil, blank, empty? [duplicate]
Is there any guidelines on how to differentiate between .nil? , .blank? and .empty? ?
4 Answers
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How to turn a String into a JavaScript function call? [duplicate]
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Seeing as I hate eval, and I am not alone:
var fn = window[settings.functionName];
if(typeof fn === 'function') {
fn(t.parentNode.id);
}
Edit: In reply to @Mahan's comment:
In this particular case, settings.functionName would be "clickedOnIt...
How can I detect when the mouse leaves the window?
...e. The solution below was tested on IE 8.0.6, FireFox 3.6.6, Opera 10.53, and Safari 4 on an MS Windows XP machine.
First a little function from Peter-Paul Koch; cross browser event handler:
function addEvent(obj, evt, fn) {
if (obj.addEventListener) {
obj.addEventListener(evt, fn, fals...
How do I Search/Find and Replace in a standard string?
...one can do better, but this solution has the merit of being easy to understand.
– Zonko
Sep 21 '11 at 8:57
1
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Calling a parent window function from an iframe
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Always take into account that parent document and iframe document must match by protocol and domain name. If it does not happen then you will get a security error as it is not allow to have cross domain scripting.
– a4bike
Sep 2 '15...
SQL multiple column ordering
I am trying to sort by multiple columns in SQL, and in different directions. column1 would be sorted descending, and column2 ascending.
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