JavaScript

infinite generator in JavaScript

JavaScriptGeneratorsinfinite sequencesadvanced

What this snippet does

Infinite generators are safe because they are lazy — take() breaks out of the loop after pulling only what it needs.

Expected output

[ 1, 2, 3, 4, 5 ]
[ 2, 4, 6, 8, 10 ]

Why practise typing this

Typing generators code builds muscle memory for the symbols and indentation JavaScript uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.

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