matrix-set-nth ( obj pair matrix -- ) (original) (raw)
Inputs
Outputs
None
Word description
Set the element in the matrix at the 2D index given by pair to obj. This operation is destructive.
Side effects
Modifies matrix
Notes
| • | This word is the two-dimensional variant of set-nth. |
|---|---|
| • | This word is intended for use with "flat" (2-dimensional) matrices. |
Errors
| • | bounds-error if the first element of a pair in pairs is greater than the maximum row index in matrix |
|---|---|
| • | bounds-error if the second element of a pair in pairs is greater than the maximum column index in matrix |
| • | Throws an error if the sequence cannot hold elements of the given type. |
Examples
Change the entry at row 1, column 0.
USING: math.matrices kernel prettyprint ; { { 0 1 } { 2 3 } } "a" { 1 0 } pick matrix-set-nth .
{ { 0 1 } { "a" 3 } }
Definition