public function testIt()
{
$constFalse = f\complement(function () {
return true;
});
$constTrue = f\complement(function () {
return false;
});
$invert = f\complement(function ($bool) {
return $bool;
});
$nand = f\complement(f\operator('&&'));
$this->assertEquals(false, $constFalse());
$this->assertEquals(true, $constTrue());
$this->assertEquals(false, $invert(true));
$this->assertEquals(true, $invert(false));
$this->assertEquals(false, $nand(true, true));
$this->assertEquals(true, $nand(true, false));
}
/**
* f\remove($fn, $coll)
*
* Returns a new collection with the values that applied to fn are false.
*
* f\remove(function ($value) { return $value % 2 == 0; }, range(1, 6));
* => array(1, 3, 5)
*/
function remove($fn, $coll)
{
return f\filter(f\complement($fn), $coll);
}