Crate peeknth 

peeknth

An iterator adapter for peeking multiple elements ahead or behind.

This crate provides flexible, composable tools for lookahead and lookbehind peeking, supporting both heap-allocated and zero-allocation use cases.

Available Modules (feature-dependent)

• peekn — Forward peeking multiple steps (PeekN, SizedPeekN)
• peekdn — Double-ended peeking from both front/back (PeekDn, SizedPeekDn)
• peekde — Lightweight double-ended peek (1 element each, via PeekableDE)

no_std Support

This crate is fully #![no_std] compatible.

• PeekN, PeekDn, PeekableDE require the alloc crate
• SizedPeekN, SizedPeekDn require no allocation at all

Structs

PeekDN

PeekDN is an iterator adapter that enables double-ended peeking.

PeekN

PeekN is an iterator adapter that allows peeking at any future element in the iterator, not just the next one.

PeekableDE

PeekableDE is an iterator adapter that allows peeking both forward and backward in a DoubleEndedIterator, similar to Peekable but bidirectional.

SizedPeekDN

A double-ended peekable iterator with fixed-size front and back buffers.

SizedPeekN

A peekable iterator with a fixed-size front buffer.

Functions

peekablede

A convenient function to wrap an iterator into PeekN.

peekdn

A Convenient function to wrap an iterator into PeekDN.

peekn

A convenient function to wrap an iterator into PeekN.

sizedpeekdn

Creates a new SizedPeekDN from a given iterator with statically defined buffer sizes.

sizedpeekn

Creates a new SizedPeekN<I, S> from the given iterator.