• → AssociationQ

Association

WMA link

Association[$key_1$ -> $val_1$, $key_2$ -> $val_2$, ...]

<|$key_1$ -> $val_1$, $key_2$ -> $val_2$, ...|>

represents an association between keys and values.

Association is the head of associations:

• • Head[<|a -> x, b -> y, c -> z|>]

• • <|a -> x, b -> y|>

• • Association[{a -> x, b -> y}]

Associations can be nested:

• • <|a -> x, b -> y, <|a -> z, d -> t|>|>