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codfish/cast_to_integer.js

Last active August 29, 2015 14:21
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JS tip to cast to an Integer, avoiding any NaN pitfalls. "Something to watch out with this approach is for the number to lie within the boundaries of a signed 32-bit integer (or from -2147483648 to 2147483647, inclusively.) Otherwise use your usual Math.floor(). This limitation stems from the fact that we're technically doing a bitwise operation…
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cast_to_integer.js
// It will always return an integer (never NaN) and will set v to 0 if it was not a number.
// Credit: http://qr.ae/ftLRB
v = ~~v;
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