search

Finds index of first value passing a test. 🏃 📼 📦 🌔 📒

Alternatives: search, searchRight, searchAll.
Similar: search, searchValue, searchInfix, searchSubsequence.
Similar: search, scan, find.

iterable.search(x, ft);
// x:  an iterable
// ft: test function (v, i, x)
// --> index of value, -1 if not found

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

var x = [1, 2, 3, 4, 5];
iterable.search(x, v => v % 2 == 0);
// 1        ^

iterable.search(x, v => v % 2 == 1);
// 0     ^

references

• Data.List.findIndex: Haskell
• List-Extra.findIndex: elm