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How to count items in a Go map?
...C BY-SA 3.0 and may be found in the Documentation archive. Reference topic ID: 732 and example ID: 2528.
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What is the function __construct used for?
... old-style constructor function, by the name of the class. Effectively, it means that the only case that would have compatibility issues is if the class had a method named __construct() which was used for different semantics. Warning: Old style constructors are DEPRECATED in PHP 7.0, and will be r...
Git Pull While Ignoring Local Changes?
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If you mean you want the pull to overwrite local changes, doing the merge as if the working tree were clean, well, clean the working tree:
git reset --hard
git pull
If there are untracked local files you could use git clean to re...
In which order should floats be added to get the most precise result?
...or accumulator c to contain values much bigger than the next summand. This means the summand is much, much smaller than the main sum, so there are going to have to be an awful lot of them to add up to much. Especially with double arithmetic.
– Steve Jessop
Jul ...
How does !!~ (not not tilde/bang bang tilde) alter the result of a 'contains/included' Array method
...y if the first argument is found, and it returns -1 if its not found. This means that if you're looking for a boolean of "is this value in the array?", you can't do a boolean comparison, since -1 is a truthy value, and when $.inArray returns 0 (a falsy value), it means its actually found in the firs...
Get source JARs from Maven repository
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What do you mean? Do you mean that sources and docs are downloaded when you run mvn eclipse:eclipse if you add this to the POM file?
– Lii
Aug 13 '14 at 12:53
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A numeric string as array key in PHP
...thought it would be fun to point out that the behaviour is similar but not identical to JavaScript object keys.
foo = { '10' : 'bar' };
foo['10']; // "bar"
foo[10]; // "bar"
foo[012]; // "bar"
foo['012']; // undefined!
sh...
Twitter image encoding challenge [closed]
...s and constant contrast adjustment for each color. Unfortunately, it also means there's no negative contrast to flip the colors.
Once it's computed the position, orientation and color for each block, it encodes this into a UTF-8 string. First, it generates a very large bignum to represent the dat...
Regular Expression for alphanumeric and underscores
...character classes (http://www.regular-expressions.info/posixbrackets.html) means that your regex can work on non ASCII strings, which the range based regexes won't do since they rely on the underlying ordering of the ASCII characters which may be different from other character sets and will therefor...
Why aren't variable-length arrays part of the C++ standard?
...t for C's target audience of embedded-systems programmers, declaring a VLA means chomping an arbitrarily large chunk of your stack. This is a guaranteed stack-overflow and crash. (Anytime you declare int A[n], you're implicitly asserting that you have 2GB of stack to spare. After all, if you know "n...