isaacsが書いているのを見かけたのでメモ。
https://github.com/isaacs/readable-stream/blob/master/lib/_stream_readable.js#L44
pi = '' + Math.PI
// "3.141592653589793"
~~Math.PI
// 3
~~pi
// 3
More than 5 years have passed since last update.
キャスティング cast to ints.
Last updated at Posted at 2013-05-07
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