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Hidden features of mod_rewrite

...hing should be case insensitive Using the long-form of flags is often more readable and will help others who come to read your code later. You can separate multiple flags with a comma: RewriteRule ^olddir(.*)$ /newdir$1 [L,NC] Common pitfalls Mixing mod_alias style redirects with mod_rew...
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How many GCC optimization levels are there?

...imization level is specified) -O1 (optimize minimally) -O2 (optimize more) -O3 (optimize even more) -Ofast (optimize very aggressively to the point of breaking standard compliance) -Og (Optimize debugging experience. -Og enables optimizations that do not interfere with debugging. It sho...
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Copy array items into another array

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How to use index in select statement?

...ex in query. It is used (or not) automagically. You can force it, however. More details (when and why do this) in other posts below. – Rast Apr 28 '14 at 11:05 add a comment ...
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Is there a Java equivalent or methodology for the typedef keyword in C++?

...'t being used interchangeably with other ints, and it also makes code much more readable for humans. Basically, it's like an enum but without a limited set of values. – weberc2 Jan 2 '15 at 23:43 ...
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What column type/length should I use for storing a Bcrypt hashed password in a Database?

...st case A is treated as equal to a. See The _bin and binary Collations for more information. share | improve this answer | follow | ...
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Preloading images with jQuery

...gt;') would actually create the element within a hidden DIV, because it is more "complicated". However, I don't think this is needed for most browsers. – JoshNaro Feb 11 '11 at 15:30 ...
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Looking for a good world map generation algorithm [closed]

...cA Thanks. I'm very tempted to have a go at this myself - when I have some more free time... :-) – David Johnstone Apr 16 '10 at 5:06 3 ...
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MySQL indexes - what are the best practices?

...ks), you need to update the index each and every time. So you do a little more work while you're writing new rows, but you save a ton of time when you're searching for something. So, in general, indexing creates a tradeoff between read efficiency and write efficiency. With no indexes, inserts can...
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How can you speed up Eclipse?

...n Luna (4.4.0) in 10 seconds. All are Java EE bundles. Newer versions have more bundled plugins, but still the trend is obvious. (by "same" workspace I mean: same (additionally installed) plugins used, same projects checked out from version control). Launching it with the latest JDK (Java 14 at th...