One-Line JavaScript Memoization

Computing the length of a Bezier curve is expensive, but the length of a given Bezier doesn’t change over time. In my JavaScript Bezier implementation, I wanted to compute the length only the first time it’s need, and save this result in order to return instantly thereafter. This is a special case of memoization. There are well-known strategies for implementing memoization. But getLength is a null

[a2ikm]

プロトタイプ指向はmemoizeが楽？

[okuharakensuke]

memoization.

[lockcole]

Javascriptでメモ化を実現するやりかた。この辺ちゃんと勉強しないとな・・・。

[wacky]

関数の戻り値をキャッシュして再利用するプログラム高速化手法「メモ化（memoization）」をJavaScriptで実装。（英語）