According to the chain news report, the public chain platform Flow developed by CryptoKitties development team Dapper Labs announced the launch of the interactive web development tool Flow Playground and introduced a new programming language called Cadence. According to Dapper Labs, Flow Playground allows developers to understand information about developing applications on Flow and obtain basic knowledge such as tokens, collectibles, and markets on the development chain. Developers can join the community by saving and sharing works with others. At the same time, the Cadence language is designed to ensure code safety, reliability, and accessibility. The language has a powerful static typing system, as well as built-in preconditions and postconditions for functions and transactions.