is8r/gist:8a4b32a0ad1f939daaa108cd50b0ca45

Last active November 18, 2016 02:19

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連番の配列を作る配列のprototype拡張

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gistfile1.js

	Array.prototype.arrange = function(n){
	return Array.from(new Array(n)).map((v,i) => i)
	}

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