Does Ethereum Solidity support Associative Arrays?

0 votes

For example - Arrays with named indexes or hashes. Something like PHP code;

$array = array(
"foo" => "some foo value",
"bar" => "some bar value",);
Sep 14, 2018 in Blockchain by digger
• 27,620 points

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0 votes

Solidity supports a type called mapping:

contract MappingExample {
    mapping(address => uint) public balances;

    function update(uint newBalance) {
        balances[msg.sender] = newBalance;

answered Sep 14, 2018 by slayer
• 29,040 points
0 votes

Here's a little example that passes values around observing fixed-size rules compatible with the ABI.

contract StructExample {

    struct MyStruct {
        bool isMyStruct;
        uint amount;
        address[3] addressList;
        bytes32 name;

    // storage instance of MyStruct
    MyStruct myStruct;

    function StructExample(
        uint amount, 
        address address1, 
        address address2, 
        address address3,
        bytes32 name) 
        myStruct.isMyStruct = true;
        myStruct.amount = amount;
        myStruct.addressList = [address1, address2, address3]; = name;

    function getMyStruct() 
          bool isMyStruct,
          uint amount,
          address[3] addressList,
          bytes32 name)
        return (

answered Sep 17, 2018 by Bobin

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