@extra-iterable/scan-while NPM | npm.io

2.5.22 • Published 4 years ago

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206

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MIT

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4 years ago

Scans from left, while a test passes. :package: :smiley_cat: :running: :vhs: :moon: :scroll: :newspaper: :blue_book:

Alternatives: scanWhile, scanWhileRight, scanUntil, scanUntilRight. Similar: search, scan, find.
This is part of package extra-iterable.

iterable.scanWhile(x, ft);
// x:  an iterable
// ft: test function (v, i, x)
// → index where test fails

const iterable = require("extra-iterable");

var x = [1, 1, 2, 2, 3, 3, 4, 4];
iterable.scanWhile(x, v => v % 2 !== 0);
// 2           ^

iterable.scanWhile(x, v => v % 3 !== 0);
// 4                 ^

iterable.scanWhile(x, v => v % 6 !== 0);
// 8                            ^

References

extra iterable scan while scanWhile

@infinitebrahmanuniverse/nolb-_extra-i @zalastax/nolb-_extra-i

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