public function min_max_sum_average_and_count_for_non_empty() { Sequence::of([1, 2, 3, 4])->collecting($min, Aggregations::min())->collecting($max, Aggregations::max())->collecting($average, Aggregations::average())->collecting($sum, Aggregations::sum())->collecting($count, Aggregations::count())->each(); $this->assertEquals(1, $min); $this->assertEquals(4, $max); $this->assertEquals(2.5, $average); $this->assertEquals(10, $sum); $this->assertEquals(4, $count); }
/** * Creates a new collector to calculate an average for all the given elements. Uses * the given function to produce a number for each element. If omitted, uses the * elements themselves. * * @param function(var): var $num * @return util.data.ICollector */ public static function averaging($num = null) { return Aggregations::average($num); }