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Add not about mappings.

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Jacques Wagener 2019-09-13 17:53:31 +02:00
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@ -73,3 +73,19 @@ contract("Main"):
proc nameGiven(name: bytes32, address {.indexed.}: uint128) {.event.} proc nameGiven(name: bytes32, address {.indexed.}: uint128) {.event.}
``` ```
# Mappings
Nimplay uses `StorageTable` type to indicated a mapping.
```nim
contract("Registry"):
names: StorageTable[bytes32, bytes32]
proc set_name*(k: bytes32, v: bytes32) {.self.} =
self.names[k] = v
proc get_name*(k: bytes32): bytes32 {.self.} =
self.names[k]
```