What is a development framework?

A framework in IT environment refers to a supporting structure with specific constraints, which aims to solve an open problem. In this structure, more components can be expanded and inserted according to specific problems, thus building a complete solution to the problem more quickly and conveniently. \ x0d \———————x0d \ That is to say: 1) The framework itself is generally not complete enough to solve specific problems; 2) The framework is essentially designed for extension; 3) The framework can provide many auxiliary, supportive and easy-to-use practical tools for the components to be expanded later, which means that the framework is often equipped with some libraries or tools to help solve some problems. \x0d\ Constraint: A software framework that solves a specific problem will first define the boundary of the problem, and then constrain related software components within this boundary to maintain the cohesion of the framework when solving the problem.