length

Gamma: Version 4.0
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# `length`

`length` -- counts the number of elements in a list or array.

## Syntax

    length (list)

## Arguments

`list`

  A list or array.

## Returns

The number of elements in the `list` or `array`. If the argument is not a list or array, returns 0.

## Example

        Gamma> length(list(#a,#b,#c,#d));
        4
        Gamma> length([11,13,15,17,19,21]);
        6
        Gamma> length(sqr(2 + 3));
        0
        Gamma>

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