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Flow is a programming language created in 2014.

#137on PLDB 10Years Old
Download source code:
git clone

Try now: Web

Javascript with static type checking.

Example from the web:
// @flow function square(n: number): number { return n * n; } square("2"); // Error!

Language features

Feature Supported Token Example
// A comment
Line Comments //
// A comment
Semantic Indentation X

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