Add Collection::timesWithKeys method

[CupOfTea696]

Create a new collection with keys, by invoking a callback a given amount of times.

Example usage:

Collection::times(2, function ($number) {
    return ['slug-'.$number => 'Title '.$number];
})->toArray();

/**
 *   [
 *       ['slug-1' => 'Title 1'],
 *       ['slug-2' => 'Title 2']
 *   ]
 */

[JosephSilber]

First off, you have a typo in your example. You want to use timesWithKeys, not times.

---

The method name timesWithKeys doesn't make much sense to me.

If you need this, maybe we shouldn't require a callback to the times method:

public static function times($amount, callable $callback = null)
{
    if ($amount < 1) {
        return new static;
    }

    $numbers = new static(range(1, $amount));

    return $callback ? $numbers->map($calback) : $numbers;
}

Then you can call mapWithKeys yourself:

Collection::times(2)->mapWithKeys(function ($number) {
    return ['slug-'.$number => 'Title '.$number];
});

[taylorotwell]

I don't really like the naming of this. I think Joseph's suggestion is maybe a bit better.

[CupOfTea696]

I'll make a new PR, this does sound like a better idea, thanks!