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Solidity Samples

Address book Solidity smart contract

Below is a address book Solidity smart contract. It allows one to save a list of Ethereum account address’s to…

Solidity Samples

Sample Solidity smart contract

Below is a sample Solidity smart contract called My First Contract. The contract sets and gets two variables (name and…

Solidity Basics

Inheritance in Solidity smart contracts

With Solidity contracts one can use inheritance which is a way of extending the functionality of a contract, helps organize…

Solidity Basics

Memory vs Storage in Solidity smart contracts

Storage – data stored on the block chain.  State variables will have a memory location of storage.  You do not…

Solidity Basics

Keccak256 hash function in Solidity

You can use Keccak256 hashing to authenticate payloads of data. For example, consider an object that generates a unique hash.…

Solidity Basics

Solidity contract clean up function

The only way code is removed from the blockchain is when a contract owner calls the self destruct operation. The…

Solidity Basics

Using Import in Solidity smart contracts

To make development easier you can use the import statement in your smart contract to reference contracts stored in other…

Solidity Basics

Payable modifier in Solidity smart contracts

Payable function modifiers provide a mechanism to receive funds in your smart contract. These functions are annotated with the payable…

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