from-str-sequential

A utility crate which implement a simple FromStrSequential trait similar to FromStr. Used on enums with unit and un-named variants, and try to convert the string to each variant sequentially (from top to bottom variant). For unit variant, the string must be the variant name (case-insentive). For un-named variants, the string must match the FromStr implementation of the un-named type.

This crate was initially released to allow multiple input formats for clap::Command

Example

```rust use fromstrsequential::FromStrSequential;

[derive(Debug, FromStrSequential, PartialEq, Eq)]

enum Foo { Bar, Baz(usize), }

asserteq!(Foo::Bar, Foo::fromstrsequential("bar").unwrap()); asserteq!(Foo::Bar, Foo::fromstrsequential("BaR").unwrap()); asserteq!(Foo::Baz(100), Foo::fromstr_sequential("100").unwrap()); ```