rust-itertools/itertools

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

3161 stars · 356 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A Rust crate providing extra iterator adaptors, iterator methods, free functions, and macros via the Itertools trait. It extends Rust's standard Iterator with combinators like interleave, cartesian products, merging, grouping, and joining.

Use cases

• interleave two iterators in Rust
• compute cartesian product of iterators
• group and chunk iterator elements
• merge sorted iterators lazily
• join iterator elements into a string
• extend Rust iterators with extra combinators

When to choose

• you need iterator combinators beyond the Rust standard library
• you want a mature, zero-cost, widely-used utility crate (1.4B+ downloads)
• you need no_std support with the use_alloc feature

When to avoid

• your needs are fully covered by std Iterator methods
• you want async or parallel iteration (use futures or rayon instead)

Facets

library · maturity stable

developer-tools developer-tools rust iterators iterators-adaptors no-std rust-crate functional-programming algorithms

Member repositories

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