Crate strum[−][src]

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 = "0.20"
strum_macros = "0.20"

# You can also access strum_macros exports directly through strum using the "derive" feature
strum = { version = "0.20", 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

AsStaticRef	A cheap reference-to-reference conversion. Used to convert a value to a reference value with `'static` lifetime within generic code. #[deprecated(since=“0.13.0”, note=“please use `#[derive(IntoStaticStr)]` instead”)]
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