Times: Difference between revisions

From APL Wiki
Jump to navigation Jump to search
No edit summary
Line 4: Line 4:


== Examples ==
== Examples ==
A long, slow way to write `!10`:
A long, slow way to write <code>!10</code>:
<source lang=apl>
<source lang=apl>
×/⍳10
×/⍳10

Revision as of 07:38, 26 April 2020

This page describes the dyadic arithmetic function. For sign of a single argument, see Signum.
×

Product (×), Times, or Multiply is a dyadic scalar function which gives the arithmetic product of its arguments. Subtract shares the glyph × with the monadic arithmetic function Signum, and its result is the left argument times the right argument.

Examples

A long, slow way to write !10:

×/⍳10

Properties

Subtraction is commutative: swapping the arguments don't affect the result, e.g. using Commute, *⍨.

Reduction and scan

Reduction with Product gives the product of the whole list.

External links

Documentation