unless it is part of an array or struct (then it is padded to a multiple of As an example, the encoding of int16(-1), bytes1(0x42), uint16(0x03), string("Hello, world!") if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'w3schools_io-box-4','ezslot_5',113,'0','0'])};__ez_fad_position('div-gpt-ad-w3schools_io-box-4-0');An example of initializing a state variable in the constructor. If you use abi.encodePacked for signatures, authentication or data integrity, make With that said, you will need a few things before going forward in the guide. Example: In the below example, the contract Types first initializes an array[data] and then the length of the array is calculated. After running the last command, npx hardhat, you will be prompted to answer a few questions. The Contract Application Binary Interface (ABI) is the standard way to interact with contracts in the Ethereum ecosystem, both parameter, a bytes3 value "def" (left-aligned). Thanks very much that makes sense, originally I had the array approach but I ran into a an stack too deep error which I hoped to fix with the structs, looks like i'll need a full rethink. A static array - if you do not intend to add or remove elements during execution: A dynamic array - if you do intend to add or remove elements during execution: Asking for help, clarification, or responding to other answers. // but useful for running the script in a standalone fashion through `node