HH\KeyedContainer

Represents an entity that can be iterated over using foreach, allowing a key, except it does not include objects that implement KeyedIterator nor Set and ImmSet

Additionally, represents an entity that can be indexed using square-bracket syntax

Square bracket syntax is:

$keyed_container[$key]

At this point, this includes entities with keys of int and string.

The iteration variables will have a type of Tk for the key and Tv for the value.

In addition to Hack collections, PHP arrays are KeyedContainers.

Guides

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Interface Synopsis

namespace HH;

interface KeyedContainer implements Container<Tv>, Rx\KeyedTraversable<Tk, Tv> {...}