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by jashkenas
5505 days ago
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@amirshim: Yes, range comprehensions were recently optimized to remove direction-checking when possible. On CoffeeScript master ... x for x in [-10..10]
... compiles into: var x;
for (x = -10; x <= 10; x++) {
x;
}
Even if the start/end values are variables, the check can be avoided by specifying the step as a number. It'll go out with the next release. |
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