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Ds\Map::ksorted — Returns a copy, sorted by key
Returns a copy sorted by key, using an optional comparator function.
comparatorA função de comparação deve retornar um inteiro menor que, igual ou maior que zero se o primeiro argumento for considerado respectivamente menor que, igual ou maior que o segundo.
Returning non-integer values from the comparison
function, such as float, will result in an internal cast to
int of the callback's return value. So values such as
0.99 and 0.1 will both be cast to an
integer value of 0, which will compare such values as equal.
Returns a copy of the map, sorted by key.
Exemplo #1 Ds\Map::ksorted() example
<?php
$map = new \Ds\Map(["b" => 2, "c" => 3, "a" => 1]);
print_r($map->ksorted());
?>
O exemplo acima produzirá algo semelhante a:
Ds\Map Object
Ds\Map Object
(
[0] => Ds\Pair Object
(
[key] => a
[value] => 1
)
[1] => Ds\Pair Object
(
[key] => b
[value] => 2
)
[2] => Ds\Pair Object
(
[key] => c
[value] => 3
)
)
Exemplo #2 Ds\Map::ksorted() example using a comparator
<?php
$map = new \Ds\Map([1 => "x", 2 => "y", 0 => "z"]);
// Reverse
$sorted = $map->ksorted(function($a, $b) {
return $b <=> $a;
});
print_r($sorted);
?>
O exemplo acima produzirá algo semelhante a:
Ds\Map Object
Ds\Map Object
(
[0] => Ds\Pair Object
(
[key] => 2
[value] => y
)
[1] => Ds\Pair Object
(
[key] => 1
[value] => x
)
[2] => Ds\Pair Object
(
[key] => 0
[value] => z
)
)