builder-pattern

A derivable macro for declaring a builder pattern.

Installation

toml [dependencies] builder-pattern = "0.1"

Examples

```rust use builder_pattern::*;

[derive(Builder)]

struct Person { name: String, age: i32, #[default(Gender::Nonbinary)] gender: Gender, }

let p1 = Person::new().name(String::from("Joe")).age(27).build(); // Orders does not matter. let p2 = Person::new().age(32).name(String::from("Jack")).gender(Gender::Male).build(); // name field required - Compilation error. let p3 = Person::new().age(15).build(); ```

It considers all fields without default attribute as required. If the attribute is provided, the expression in the parantheses is evaluated as a default value.

When the insuficient number of arguments is provided, the compilation will fail.