@extra-iterable/search-subsequence v2.5.22

Finds first index of a subsequence. :package: :smiley_cat: :running: :vhs: :moon: :scroll: :newspaper: :blue_book:

Similar: hasPrefix, hasInfix, hasSuffix, hasSubsequence. Similar: search, scan, find.

This is part of package extra-iterable.

iterable.searchSubsequence(x, y, [fc], [fm]);
// x:  an iterable
// y:  search subsequence
// fc: compare function (a, b)
// fm: map function (v, i, x)
// → start index of subsequence, -1 if not found

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

var x = [1, 2, 3, 4];
iterable.searchSubsequence(x, [2, 4]);
// 1

iterable.searchSubsequence(x, [-2, -4]);
// -1

iterable.searchSubsequence(x, [-2, -4], (a, b) => Math.abs(a) - Math.abs(b));
// 1

iterable.searchSubsequence(x, [-2, -4], null, v => Math.abs(v));
// 1

References

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