HH\Lib\Vec\flatten

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This is available as Vec\flatten in the www repository.

Returns a new vec formed by joining the Traversable elements of the given Traversable

namespace HH\Lib\Vec;

function flatten<Tv>(
  Traversable<Container<Tv>> $traversables,
): vec<Tv>;

For a fixed number of Traversables, see Vec\concat().

Time complexity: O(n), where n is the combined size of all the $traversables Space complexity: O(n), where n is the combined size of all the $traversables

Parameters

Returns

  • vec<Tv>

Examples

$example_vec = vec[vec[1,2,3,4,5],vec[98,99]];
$result = Vec\flatten($example_vec);
print_r($result);
//result: [1,2,3,4,5,98,99]

$example_vec = vec[vec[1,2,3,4,5,98,99]];
$result = Vec\flatten($example_vec);
print_r($result);
//result: [1,2,3,4,5,98,99]

$example_vec = vec[];
$result = Vec\flatten($example_vec);
print_r($result);
//result: []