# Module collections::enum_set [−] [src]

Deprecated since 1.16.0

: long since replaced

🔬 This is a nightly-only experimental API. (`enumset` #37966)

matches collection reform specification, waiting for dust to settle

A structure for holding a set of enum variants.

This module defines a container which uses an efficient bit mask representation to hold C-like enum variants.

## Structs

EnumSet | [ Deprecated ] [ Experimental ] A specialized set implementation to use enum types.
Iter | [ Deprecated ] [ Experimental ] An iterator over an EnumSet

## Traits

CLike | [ Deprecated ] [ Experimental ] An interface for casting C-like enum to usize and back. A typically implementation is as below.

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