Rust ARGS and KWARGS

This crate allows you to use tail args and kwargs.

If you want an unknown argument size, you can simply do like this:

#[ extend_args( ARGS( <TYPE> ) ) ]
fn <FN NAME>( <IMPORTANT ARG> : <IMPORTANT ARG TYPE> ) -> <RETURN TYPE>
{
  // do something
}

And calls like this:

<FN NAME>!( <IMPORTANT VALUE>, <OTHER VALUES>, ... );

You can set as many required arguments as you need and the rest will be stored into args.

Also you can use named arguments. Do it like this:

#[ extend_args( KWARGS( <TYPE> ) ) ]
fn <FN NAME>( <IMPORTANT ARG> : <IMPORTANT ARG TYPE> ) -> <RETURN TYPE>
{
  // do something
}

This is the same to ARGS but now, lets look at how it calls:

<FN NAME>!( <IMPORTANT VALUE>, <KEY NAME> = <ARG VALUE>, ... );

And, ofcourse, you can use both of it:

#[ extend_args( ARGS( <ARGS TYPE> ), KWARGS( <KWARGS TYPE> ) ) ]
fn <FN NAME>( <IMPORTANT ARG> : <IMPORTANT ARG TYPE> ) -> <RETURN TYPE>
{
  // do something
}

Note that named and unnamed arguments are separated by ;

<FN NAME>!( <IMPORTANT VALUE>, <OTHER POS ARGS>, ... ; <KEY NAME> = <ARG VALUE>, ... );

For more examples see here