public function testCompareMulti()
{
$values = TestData::$fruit;
usort($values, fn\fnCompareMulti(array(fn\fnCompareField('name'))));
$this->assertNotEquals(TestData::$fruit, $values);
$this->assertEquals(Sequence::make(TestData::$fruit)->pluck('name')->sort()->toValues(), array_map(fn\fnPluck('name'), $values));
$values = array(array('name' => 'Terry', 'age' => 22), array('name' => 'Bob', 'age' => 30), array('name' => 'Ann', 'age' => 30), array('name' => 'Sam', 'age' => 19), array('name' => 'Rob', 'age' => 30), array('name' => 'Robert', 'age' => 55));
$expected = array(array('name' => 'Robert', 'age' => 55), array('name' => 'Ann', 'age' => 30), array('name' => 'Bob', 'age' => 30), array('name' => 'Rob', 'age' => 30), array('name' => 'Terry', 'age' => 22), array('name' => 'Sam', 'age' => 19));
usort($values, fn\fnCompareMulti(array(fn\fnCompareFieldRev('age'), fn\fnCompareField('name'))));
$this->assertEquals($expected, $values);
}
/**
* @param array[] $employees
* @return array
*/
function exampleKeyByIdSortByEmployeeLastName2($employees)
{
$employeesSortedById = Sequence::make($employees)->keyBy(fn\fnPluck('employeeId'))->asort(fn\fnCompareField('lastName'))->to_a();
return $employeesSortedById;
}
/**
* Generates a comparison function that can be used to sort an array by a given field.
*
* @param string $fieldName
* @return Closure
*/
public static function fnByField($fieldName)
{
return fn\fnCompareField($fieldName);
}