matrix

import matrix

Functions

Function	Signature	Description
zeros	(Int, Int) -> Matrix	Create a zero-filled matrix.
ones	(Int, Int) -> Matrix	Create a matrix filled with ones.
shape	(Matrix) -> (Int, Int)	Get the (rows, cols) shape of a matrix.
transpose	(Matrix) -> Matrix	Transpose a matrix.
from_lists	(List[List[Float]]) -> Matrix	Create a matrix from a list of row lists.
to_lists	(Matrix) -> List[List[Float]]	Convert a matrix to a list of row lists.
get	(Matrix, Int, Int) -> Float	Get element at (row, col).
rows	(Matrix) -> Int	Get the number of rows.
cols	(Matrix) -> Int	Get the number of columns.
add	(Matrix, Matrix) -> Matrix	Element-wise addition of two matrices.
mul	(Matrix, Matrix) -> Matrix	Matrix multiplication.
scale	(Matrix, Float) -> Matrix	Multiply all elements by a scalar.
map	(Matrix, fn(Float) -> Float) -> Matrix	Apply a function to every element.

Reference

matrix.zeros(rows: Int, cols: Int) -> Matrix

Create a zero-filled matrix.

matrix.zeros(3, 4)

matrix.ones(rows: Int, cols: Int) -> Matrix

Create a matrix filled with ones.

matrix.ones(3, 4)

matrix.shape(m: Matrix) -> (Int, Int)

Get the (rows, cols) shape of a matrix.

matrix.shape(m) // => (3, 4)

matrix.transpose(m: Matrix) -> Matrix

Transpose a matrix.

matrix.transpose(m)

matrix.from_lists(rows: List[List[Float]]) -> Matrix

Create a matrix from a list of row lists.

matrix.from_lists([[1.0, 2.0], [3.0, 4.0]])

matrix.to_lists(m: Matrix) -> List[List[Float]]

Convert a matrix to a list of row lists.

matrix.to_lists(m) // => [[1.0, 2.0], [3.0, 4.0]]

matrix.get(m: Matrix, row: Int, col: Int) -> Float

Get element at (row, col).

matrix.get(m, 0, 1) // => 2.0

matrix.rows(m: Matrix) -> Int

Get the number of rows.

matrix.rows(m) // => 3

matrix.cols(m: Matrix) -> Int

Get the number of columns.

matrix.cols(m) // => 4

matrix.add(a: Matrix, b: Matrix) -> Matrix

Element-wise addition of two matrices.

matrix.add(a, b)

matrix.mul(a: Matrix, b: Matrix) -> Matrix

Matrix multiplication.

matrix.mul(a, b)

matrix.scale(m: Matrix, s: Float) -> Matrix

Multiply all elements by a scalar.

matrix.scale(m, 2.0)

matrix.map(m: Matrix, f: fn(Float) -> Float) -> Matrix

Apply a function to every element.

matrix.map(m, (x) => x * x)