pub fn vstack<'a, N, I, Iptr, MatArray>(mats: &MatArray) -> CsMatI<N, I, Iptr>where
N: 'a + Clone + Default,
I: 'a + SpIndex,
Iptr: 'a + SpIndex,
MatArray: AsRef<[CsMatViewI<'a, N, I, Iptr>]>,Expand description
Construct a sparse matrix by vertically stacking other matrices