YaLinqo\Enumerable::sum PHP Method

Enumerable Class Documentation Exibir arquivo Open project: athari/yalinqo

sum() public method

Syntax: sum ()

Computes the sum of a sequence of values.

Syntax: sum (selector {(v, k) ==> result})

Computes the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

This method returns zero if source contains no elements.

public sum ( callable \| null $selector = null ) : number
$selector	callable \| null	{(v, k) ==> result} A transform function to apply to each element.
return	number	The sum of the values in the sequence.

    public function sum($selector = null)
    {
        $selector = Utils::createLambda($selector, 'v,k', Functions::$value);
        $sum = 0;
        foreach ($this as $k => $v) {
            $sum += $selector($v, $k);
        }
        return $sum;
    }

Enumerable

__construct

aggregate

aggregateOrDefault

all

any

average

call

cast

contains

count

distinct