macro_rules! concat {
() => { ... };
($([$($v:expr),* $(,)?] ),* $(,)?) => { ... };
}
Expand description
Concatenates the matrices in each row horizontally,
then concatenates the results vertically.
concat![[a0, a1, a2], [b1, b2]]
results in the matrix
[a0 | a1 | a2][b0 | b1]