2.8.12 • Published 1 day ago

@thi.ng/arrays v2.8.12

Weekly downloads
3,865
License
Apache-2.0
Repository
github
Last release
1 day ago

arrays

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This project is part of the @thi.ng/umbrella monorepo.

About

Array / Arraylike utilities.

Status

STABLE - used in production

Search or submit any issues for this package

Installation

yarn add @thi.ng/arrays

ES module import:

<script type="module" src="https://cdn.skypack.dev/@thi.ng/arrays"></script>

Skypack documentation

For Node.js REPL:

# with flag only for < v16
node --experimental-repl-await

> const arrays = await import("@thi.ng/arrays");

Package sizes (gzipped, pre-treeshake): ESM: 2.12 KB

Dependencies

API

Generated API docs

Binary search result predicates

The following predicates can be used to perform predecessor / successor queries using binarySearch().

  • bsLT() - Returns index of last item less than search value or -1 if no such values exist
  • bsLE() - Similar to bsLT(), but for less-than-equals queries
  • bsGT() - Returns index of first item greater than search value or -1 if no such values exist
  • bsGE() - Similar to bsGT(), but for less-than-equals queries
  • bsEQ() - Merely syntax sugar, casting any non-found result indices to -1
const src = [10, 20, 30, 40];

bsLT(binarySearch(src, 25))
// 1

// greater-than queries also require the array length

bsGT(binarySearch(src, 25), src.length)
// 2

bsGT(binarySearch(src, 40), src.length)
// -1

Authors

Karsten Schmidt

If this project contributes to an academic publication, please cite it as:

@misc{thing-arrays,
  title = "@thi.ng/arrays",
  author = "Karsten Schmidt",
  note = "https://thi.ng/arrays",
  year = 2018
}

License

© 2018 - 2021 Karsten Schmidt // Apache Software License 2.0

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