Collection::splice return empty

[foremtehan]

$collection = collect([1, 2, 3]);

$collection->splice(1, 0, 4); <------ returns empty collection

dd($collection->all()); <------ return [1,4,2,3]

What if i want to use fluent syntax after calling splice method ?

[noefleury]

From what I see you want to insert some element 4 at the index 1 of the collection ?

Not sure the splice method was made to be used fluently for this type of case.

And a proposal about an insert in Collection was rejected : laravel/ideas#650

This code is a bit tricky but seems to work fluently (using variables for better understanding) :

$collection = collect([1, 2, 3]);
$insertionIndex = 1;
$insertionValue = 4;
$collection->slice(0, $insertionIndex)->push($insertionValue)->merge($collection->splice($insertionIndex))->dump();