shrinkwraprs
Making wrapper types allows us to give more compile-time guarantees about our code being correct:
// Now we can't mix up widths and heights; the compiler will yell at us!
;
;
But... they're kind of a pain to work with. If you ever need to get at
that wrapped i64
, you need to constantly pattern-match back and forth
to wrap and unwrap the values.
shrinkwraprs
aims to alleviate this pain by allowing you to derive
implementations of various conversion traits by attaching
#[derive(Shrinkwrap)]
.
Traits implemented
Currently, shrinkwraprs
derives the following traits for all structs:
AsRef<InnerType>
AsMut<InnerType>
Borrow<InnerType>
BorrowMut<InnerType>
Deref<Target=InnerType>
DerefMut<Target=InnerType>
Cool, how do I use it?
First, add shrinkwraprs
as a dependency in your Cargo.toml
:
[]
= "0.0.2"
Then, just slap a #[derive(Shrinkwrap)]
on any structs you want
convenient-ified:
extern crate shrinkwraprs;
;
If you have multiple fields, but there's only one field you want to be able
to deref/borrow as, mark it with #[shrinkwrap(main_field)]
:
;
] Token)