Crate variadic_from

Variadic from.

Module :: variadic_from

Variadic from

Basic use-case.

use variadic_from::exposed::*;

fn main()
{
  #[ derive( Debug, PartialEq, Default, VariadicFrom ) ]
  struct StructNamedFields
  {
    a : i32,
    b : i32,
  }

  let got : StructNamedFields = From::from( ( 13, 14 ) );
  let exp = StructNamedFields{ a : 13, b : 14 };
  assert_eq!( got, exp );

  let got : StructNamedFields = from!( 13, 14 );
  let exp = StructNamedFields{ a : 13, b : 14 };
  assert_eq!( got, exp );

  let got : StructNamedFields = ( 13, 14 ).to();
  let exp = StructNamedFields{ a : 13, b : 14 };
  assert_eq!( got, exp );

}

To add to your project

cargo add variadic_from

Try out from the repository

git clone https://github.com/Wandalen/wTools
cd wTools
cargo run --example variadic_from_trivial

Re-exports

• pub use super::wtools;
• pub use super::from::orphan::*;

Modules

• dependency
  Dependencies.
• exposed
  Exposed namespace of the module.
• orphan
  Orphan namespace of the module.
• prelude
  Prelude to use essentials: use my_module::prelude::*.
• protected
  Protected namespace of the module.
• wtools
  Types, which are extension of std.

Macros

• from
  Variadic constructor.

Traits

• From_0
  Constructor without arguments. Alias of Default.
• From_1
  Constructor with single argument.
• From_2
  Constructor with two arguments.
• From_3
  Constructor with three arguments.
• Into1
  value-to-value conversion that consumes the input value. Change left and rught, but keep semantic of `From_1``.

Derive Macros

• VariadicFrom
  Derive macro to implement default constructors From_0, From_1, From_2, From_3.