Macro dataview::offset_of

source ·

macro_rules! offset_of {
    ($($tt:tt)*) => { ... };
}

Expand description

Returns the offset of a field.

#[repr(C)]
struct Data {
	byte: u8,
	float: f32,
}

let offset = dataview::offset_of!(Data.float);
assert_eq!(offset, 4);

const OFFSET: usize = dataview::offset_of!(Data.float);
assert_eq!(OFFSET, 4);

The syntax is $ty.$field.

No support for tuples, tuple structs or unions.

No support for projecting through multiple fields.