Crate implements

Macro to answer the question: does it implement a trait?

Module :: implements

Macro to answer the question: does it implement a trait?

This solution has a limitation:

• In case entity is a function and trait is Fn/FnMut/FnOnce which current entity does not implement you will get compile-time error instead of false.

Basic use-case

use implements::*;

dbg!( implements!( 13_i32 => Copy ) );
// < implements!( 13_i32 => Copy ) : true
dbg!( implements!( Box::new( 13_i32 ) => Copy ) );
// < implements!( 13_i32 => Copy ) : false

To add to your project

cargo add implements

Try out from the repository

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

Modules

• 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.

Macros

• implements
  Macro implements to answer the question: does it implement a trait?
• instance_of
  Macro instance_of to answer the question: does it implement a trait? Alias of the macro implements.