Memory Type Variable in Ethereum Solidity

When it is necessary to store return value of a function into a memory type variable in smart contract, the size of memory type variable should be declared before storing data https://medium.com/coinmonks/ethereum-solidity-memory-vs-storage-which-to-use-in-local-functions-72b593c3703a https://solidity.readthedocs.io/en/v0.4.24/types.html

Gatsby

Gatsby is a React framework to develop websites in short time. It is a fast modern site generator. Gatsby provides convenient functionalities to develop landing pages very quickly. Also according to Gatsby’s documentations it is widely used in E-Commerce website development. It’s very easy to learn for the developers who knows React.js very well. https://www.gatsbyjs.org/docs/