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Why does Vim save files with a ~ extension?
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Actually - do I have to have both nobackup and nowritebackup? Is there a way to write a copy of the file as a backup, but not do this write/delete/rename stuff?
– Merlyn Morgan-Graham
Mar 2...
What's the difference between VARCHAR and CHAR?
...your content is a fixed size" it means the rows of your table must contain all fixed size fields. You get no performance improvement if you use CHAR against VARCHAR in one field, but the table contains other fields that are VARCHAR.
– Marco Demaio
May 20 '10 at...
What does ~~ (“double tilde”) do in Javascript?
...he value to a string or a boolean), then inverts the lowest 31 bits. Officially ECMAScript numbers are all floating-point, but some numbers are implemented as 31-bit integers in the SpiderMonkey engine.
You can use it to turn a 1-element array into an integer. Floating-points are converted accordin...
Convert special characters to HTML in Javascript
... @JohnnyBizzle /g in a regular expression means "global". Simply put, all occurrences of the string will be replaced. Without /g only the first match would be replaced.
– Kevin G.
Jul 21 '16 at 11:42
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When does invoking a member function on a null instance result in undefined behavior?
...) and (b) result in undefined behavior. It's always undefined behavior to call a member function through a null pointer. If the function is static, it's technically undefined as well, but there's some dispute.
The first thing to understand is why it's undefined behavior to dereference a null poin...
Algorithm to randomly generate an aesthetically-pleasing color palette [closed]
...king for a simple algorithm to generate a large number of random, aesthetically pleasing colors. So no crazy neon colors, colors reminiscent of feces, etc.
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How to detect if URL has changed after hash in JavaScript
...hange event on window.
In some old browsers, you need a timer that continually checks location.hash. If you're using jQuery, there is a plugin that does exactly that.
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Limiting floats to two decimal points
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You are running into the old problem with floating point numbers that not all numbers can be represented exactly. The command line is just showing you the full floating point form from memory.
With floating point representation, your rounded version is the same number. Since computers are binary, ...
jquery UI Sortable with table and tr width
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The selected answer here is a really nice solution, but it has one severe bug which is apparent in the original JS fiddle (http://jsfiddle.net/bgrins/tzYbU/): try dragging the longest row (God Bless You, Mr. Rosewater), and the rest of the cell widths colla...
Get index of element as child relative to parent
... @steweb - Hey - because one event handler is much preferable to potentially many. Attaching events to the dom can be expensive if you have large lists so as a rule I try to use the above where possible rather than individual handlers on each element. One article that goes deeper is briancrescima...