# MatrixCategoryFunctions2(R1, Row1, Col1, M1, R2, Row2, Col2, M2)¶

map(f, m) applies the function f to the elements of the matrix m.
map(f, m) applies the function f to the elements of the matrix m.
reduce(f, m, r) traverses m row by row passing m(i, j) as first argument to f. The second argument to f works as accumulator, value from previous call is passed to next call On first call r is passed as second argument to f. Return value is the last result returned by f.