pub fn parse_einsum_notation(notation: &str) -> Result<EinsumNotation>Expand description
Parse string notation into rank-unresolved axis tokens.
§Examples
use tenferro_einsum::{parse_einsum_notation, EinsumAxis};
let notation = parse_einsum_notation("...ij,...jk->...ik").unwrap();
assert_eq!(notation.inputs[0][0], EinsumAxis::Ellipsis);§Errors
Returns crate::Error::InvalidSubscripts for malformed notation,
multiple ellipses in one term, or parenthesized contraction order.