public function testPassNoFunctions()
{
$input = range(0, 10);
$composed = compose();
$composed_values = array_map(function ($x) use($composed) {
return $composed($x);
}, $input);
$this->assertEquals($composed_values, $input);
}
/**
* Returns a comparison function that can be used with e.g. `usort()`
*
* @param callable $comparison A function that compares the two values. Pick e.g. strcmp() or strnatcasecmp()
* @param callable $keyFunction A function that takes an argument and returns the value that should be compared
* @return callable
*/
function compare_object_hash_on(callable $comparison, callable $keyFunction = null)
{
$keyFunction = $keyFunction ? compose($keyFunction, 'spl_object_hash') : 'spl_object_hash';
return compare_on($comparison, $keyFunction);
}