nova
Create newtypes with great convenience.
All types generated by the following macros implement Debug
, Clone
, Eq
, PartialEq
, Ord
, PartialOrd
and Hash
. For Copy
types, the newtype also implements Copy
.
Usage
[]
= "0.4"
Example
use newtype;
pub type Meow = String;
pub type SpecialUuid = Uuid;
Supported attributes
Crate compatibility attributes
- serde: enables support for the
serde
attribute to deriveSerialize
andDeserialize
for newtypes. - sqlx: enables support for the
sqlx
attribute to derivesqlx::Type
for newtypes. - async_graphql: enables support for the
async_graphql
attribute to implementScalar
for newtypes.
Generation attributes
- copy: derives
Copy
on the newtype. - opaque: disables generating a
Deref
andinto_inner
functions to create an opaque type. - borrow = "<type>": sets the type to be used for the
Deref
implementation, if needed. - new: create default construction
new
function andFrom
implementation. - derive(...): replace the default derives for the newtype with the provided list. Same syntax as the normal
#[derive(...)]
attribute.
License
This project is licensed under either of
- Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
at your option.