ndslice

Macro sel_from_shape

Source 
macro_rules! sel_from_shape {
    ($shape:expr, $label:ident = $range:expr) => { ... };
    ($shape:expr, $($label:ident = $val:literal),* $(,)?) => { ... };
    ($shape:expr, $($label:ident = $range:expr),* $(,)?) => { ... };
}
Expand description

Construct a Selection from a Shape using labeled dimension constraints.

This macro provides a convenient syntax for specifying sub-selections on a shape by labeling dimensions and applying either exact indices or ranges. Internally, it wraps selection_from_one and selection_from to produce a fully-aligned Selection expression.

§Forms

  • Single labeled range:

    let shape = ndslice::shape!(zone = 2, host = 4, gpu = 8);
let sel = ndslice::sel_from_shape!(&shape, host = 1..3);

  • Multiple exact indices (converted to n..n+1):

    let shape = ndslice::shape!(zone = 2, host = 4, gpu = 8);
let sel = ndslice::sel_from_shape!(&shape, zone = 1, gpu = 4);

  • Multiple labeled ranges:

    let shape = ndslice::shape!(zone = 2, host = 4, gpu = 8);
let sel = ndslice::sel_from_shape!(&shape, zone = 0..1, host = 1..3, gpu = 4..8);

§Panics

This macro calls .unwrap() on the result of the underlying functions. It will panic if any label is not found in the shape.

§See Also