constant function


Definition: A function that always gives the same value.

See also 0-ary function, unary function, binary function, n-ary function.

Note: A 0-ary or nullary function that is pure (no state or interactions with external variables) must be a constant function.

Author: PEB

Go to the Dictionary of Algorithms and Data Structures home page.

If you have suggestions, corrections, or comments, please get in touch with Paul Black.

Entry modified 17 December 2004.
HTML page formatted Wed Mar 13 12:42:45 2019.

Cite this as:
Paul E. Black, "constant function", in Dictionary of Algorithms and Data Structures [online], Paul E. Black, ed. 17 December 2004. (accessed TODAY) Available from: