<?php
namespace PHPixme;
/**
* Group a traversable by a return value, separating them out into [groupName=>[value...]]
* @param callable $fn
* @param array|\Traversable $arrayLike
* @return array|\Closure
*/
function group($fn = null, $arrayLike = null)
{
return call_user_func_array(__PRIVATE__::$instance[group], func_get_args());
}
const group = __NAMESPACE__ . '\\group';
__PRIVATE__::$instance[group] = __PRIVATE__::curryExactly2(function ($fn, $arrayLike) {
__CONTRACT__::argIsACallable($fn);
__CONTRACT__::argIsATraversable($arrayLike, 1);
if ($arrayLike instanceof GroupableInterface) {
return $arrayLike->group($fn);
}
$output = [];
foreach (__PRIVATE__::protectTraversable($arrayLike) as $key => $value) {
$output[call_user_func($fn, $value, $key, $arrayLike)][] = $value;
}
return $output;
});
<?php
namespace PHPixme;
/**
* @param callable $hof
* @param array|\Traversable|FunctorInterface $traversable
* @return \Closure|mixed
* @sig Callable (a -> b) -> \Traversable[a] -> \Traversable[b]
*
*/
function map($hof = null, $traversable = null)
{
return call_user_func_array(__PRIVATE__::$instance[map], func_get_args());
}
const map = __NAMESPACE__ . '\\map';
__PRIVATE__::$instance[map] = __PRIVATE__::curryExactly2(function ($hof, $traversable) {
__CONTRACT__::argIsACallable($hof);
__CONTRACT__::argIsATraversable($traversable, 1);
if ($traversable instanceof FunctorInterface) {
return $traversable->map($hof);
}
$output = [];
foreach (__PRIVATE__::protectTraversable($traversable) as $key => $value) {
$output[$key] = call_user_func($hof, $value, $key, $traversable);
}
return $output;
});
