Crate const_struct

const_struct

This crate provides a way to create a struct with const generics and const values.

use const_struct::{primitive::F32Ty, F32};
pub fn tester<A: F32Ty>() {
    println!("a: {:?}", A::__DATA);
}
fn main() {
    tester::<F32!(0.5)>();
}

This crate is no_std. used unsafe code:

• core::mem::zeroed
• core::mem::transmute

example code

use const_struct::{call_with_generics, const_struct, ConstStruct};
#[derive(ConstStruct, Debug)]
pub struct TestGenerics<const T: usize> {
    float: f32,
}
const COUNT: usize = 7;
#[const_struct]
const B: TestGenerics<{ COUNT }> = TestGenerics { float: 0.0 };
const fn constant<const T: usize, S: TestGenericsTy<T>>() -> f32 {
    S::FLOAT
}

const FLOAT: f32 = call_with_generics!(constant::<test_generics!(BTy)>());

If you see other complex example code, you see https://github.com/oligamiq/const_struct/tree/main/crates/test_code

See the Github README for more information.

Re-exports

pub use primitive::PrimitiveTraits;

Modules

keeptype

prelude

primitive

struct_prim

util_macro

Macros

Bool

Char

F32

F64

I8

I16

I32

I64

I128

Isize

None

Some

U8

U16

U32

U64

U128

Usize

call_with_generics

init

match_end_with

match_underscore

parse_value

Attribute Macros

const_compat

const_struct

This macro generates a const struct.

Derive Macros

ConstStruct

This derive generates a const struct implementation from struct definitions.