@Index[S @ {...}]
A value that implements the
(index)
protocol for the keys in S. A key's presence is not checked, only that the
value has such a key.
Methods
(index)[K, V, U @ {?(K): V, ...}] key -> V
Returns the value at key.
Parameters
| Name | Type | Description |
|---|---|---|
self |
Index[U] |
Receiver. |
key |
K |