This is soooo confusing. I have like zero idea, why this works, espencially the "~" operator.
When I do ~(-1), I got 0, but if I do ~~(-1), I got -1. emm.... what?
~(-1)
~~(-1)
>> and | also work in flooring a number, but in negative values it rounds "down".
>>
|
It isn't flooring in these cases - merely removing the decimal part.
Oh, I forgot to mention—it behaves just like Math.floor unless the value is negative.
Math.floor
~ is the bitwise NOT operator, which will reverse all bits in the number - having converted it to a 32-bit signed integer first. Applying it twice resets the bits to their original state. It's a dirty trick to convert to an integer
~
w3schools.com/js/js_bitwise.asp
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This is soooo confusing. I have like zero idea, why this works, espencially the "~" operator.
When I do
~(-1), I got 0, but if I do~~(-1), I got -1. emm.... what?>>and|also work in flooring a number, but in negative values it rounds "down".It isn't flooring in these cases - merely removing the decimal part.
Oh, I forgot to mention—it behaves just like
Math.floorunless the value is negative.~is the bitwise NOT operator, which will reverse all bits in the number - having converted it to a 32-bit signed integer first. Applying it twice resets the bits to their original state. It's a dirty trick to convert to an integerw3schools.com/js/js_bitwise.asp