public function testFnNestedMap()
{
$fnMap = function ($v) {
$v['mul'] = strlen($v['name']) * $v['count'];
return $v;
};
$fnMap2 = function ($v) {
$v['mul'] = -strlen($v['name']) * $v['count'];
return $v;
};
$fruitBasket = array(TestData::$fruit, TestData::$fruit, TestData::$fruit, TestData::$fruit, TestData::$fruit);
$n1 = Sequence::make($fruitBasket)->map(FnGen::fnNestedMap($fnMap))->to_a();
$n2 = Sequence::make($fruitBasket)->map(FnSequence::make()->map($fnMap)->to_a())->to_a();
$n3 = Sequence::make($fruitBasket)->map(function ($values) use($fnMap) {
return Sequence::make($values)->map($fnMap)->to_a();
})->to_a();
$x1 = Sequence::make($fruitBasket)->map(FnGen::fnNestedMap($fnMap2))->to_a();
$this->assertEquals($n3, $n1);
$this->assertEquals($n3, $n2);
$this->assertNotEquals($n1, $x1);
}
/**
* Returns a function that applies a function to a nested array and returns the results.
*
* @param $fn
* @return Closure
*/
function fnNestedMap($fn)
{
return FnSequence::make()->map($fn)->to_a();
}
/**
* Inject another FnSequence
*
* @param FnSequence $fnSequence
* @return FnSequence
*/
public function inject(FnSequence $fnSequence)
{
return new FnSequence($this->append($fnSequence->to_fn()));
}