Crate strum

Strum

Strum is a set of macros and traits for working with enums and strings easier in Rust.

The full version of the README can be found on Github.

Including Strum in Your Project

Import strum and strum_macros into your project by adding the following lines to your Cargo.toml. Strum_macros contains the macros needed to derive all the traits in Strum.

[dependencies]
strum = "0.22"
strum_macros = "0.22"

strum = { version = "0.22", features = ["derive"] }

Modules

additional_attributes

Documentation for Additional Attributes

Enums

ParseError

The ParseError enum is a collection of all the possible reasons an enum can fail to parse from a string.

Traits

AsStaticRefDeprecated

A cheap reference-to-reference conversion. Used to convert a value to a reference value with 'static lifetime within generic code.

EnumCount

A trait for capturing the number of variants in Enum. This trait can be autoderived by strum_macros.

EnumMessage

Associates additional pieces of information with an Enum. This can be autoimplemented by deriving EnumMessage and annotating your variants with `#[strum(message=“…”)].

EnumProperty

EnumProperty is a trait that makes it possible to store additional information with enum variants. This trait is designed to be used with the macro of the same name in the strum_macros crate. Currently, the only string literals are supported in attributes, the other methods will be implemented as additional attribute types become stabilized.

IntoEnumIterator

This trait designates that an Enum can be iterated over. It can be auto generated using strum_macros on your behalf.

VariantNames

A trait for retrieving the names of each variant in Enum. This trait can be autoderived by strum_macros.

Derive Macros

AsRefStr

Converts enum variants to &'static str.

AsStaticStr

Display

Converts enum variants to strings.

EnumCount

Add a constant usize equal to the number of variants.

EnumDiscriminants

Generate a new type with only the discriminant names.

EnumIter

Creates a new type that iterates of the variants of an enum.

EnumMessage

Add a verbose message to an enum variant.

EnumProperty

Add custom properties to enum variants.

EnumString

Converts strings to enum variants based on their name.

EnumVariantNames

Implements Strum::VariantNames which adds an associated constant VARIANTS which is an array of discriminant names.

IntoStaticStr

Implements From<MyEnum> for &'static str on an enum.

ToString

implements std::string::ToString on en enum