Class: Map

ProtoBuf. Map

new Map(fieldnon-null, contentsopt)

Constructs a new Map. A Map is a container that is used to implement map fields on message objects. It closely follows the ES6 Map API; however, it is distinct because we do not want to depend on external polyfills or on ES6 itself.

Parameters:
Name Type Attributes Description
field ProtoBuf.Reflect.Field

Map field

contents Object.<string, *> <optional>

Initial contents

Source:

Members

(non-null) field :ProtoBuf.Reflect.Field

The field corresponding to this map.

Type:
  • ProtoBuf.Reflect.Field
Source:

(non-null) keyElem :ProtoBuf.Reflect.Element

Element instance corresponding to key type.

Type:
Source:

(non-null) map :Object.<string, Object>

Internal map: stores mapping of (string form of key) -> (key, value) pair.

We provide map semantics for arbitrary key types, but we build on top of an Object, which has only string keys. In order to avoid the need to convert a string key back to its native type in many situations, we store the native key value alongside the value. Thus, we only need a one-way mapping from a key type to its string form that guarantees uniqueness and equality (i.e., str(K1) === str(K2) if and only if K1 === K2).

Type:
  • Object.<string, Object>
Source:

(non-null) valueElem :ProtoBuf.Reflect.Element

Element instance corresponding to value type.

Type:
Source: