alpdeniz / settypes

Enumerable Set Types, Ethereum, Solidity

SetTypes

Enumerable Set Types, Ethereum, Solidity

Elaboration and optimization of the Solidity CRUD pattern at: https://github.com/rob-Hitchens/UnorderedKeySet

Four implementations:

• AddressSet
• Bytes32Set
• StringSet
• UintSet

Usage

import "./AddressSet.sol";

contract MyContract {

  using AddressSet for AddressSet.Set;
  AddressSet.Set myAddressSet;
  ...

Uses storage pointers to pass Sets to the library.

myAddressSet.insert(newAddress);
myAddressSet.remove(oldAddress);
uint count = myAddressSet.count();
address key = myAddressSet.keyAtIndex(row);

Works with structs:

struct User {
  AddressSet.Set followerSet;
  AddressSet.Set followingSet;
 }

Works with mappings:

mapping(bytes32 => AddressSet.Set) productOwnerSets;

See SetTypeExamples.sol for example usage.