Module :: meta_tools

Collection of general purpose meta tools.

Basic use-case :: variadic constructor of collections

Among other useful meta tools the module aggregates variadic constructors of collections. For example macro hmap! for constructing a hash map.

use meta_tools::*;

let meta_map = hmap! { 3 => 13 };
let mut std_map = std::collections::HashMap::new();
std_map.insert( 3, 13 );
assert_eq!( meta_map, std_map );

Basic Use Case :: function-style call

Apply a macro for each element of a list.

Macro for_each may be called either in function-style way or in map-style way. Pass name of macro to apply to elements as the first arguments and elements after the macro name. Use comma as delimiter.

use meta_tools::*;
for_each!( dbg, "a", "b", "c" );

// generates
dbg!( "a" );
dbg!( "b" );
dbg!( "c" );

To add to your project

cargo add meta_tools

Try out from the repository

git clone https://github.com/Wandalen/wTools
cd wTools
cd examples/meta_tools_trivial
cargo run