Solving the Expression Problem makes it possible to extend preexisting types to new methods and extend preexisting methods to new types, all without recompiling existing code.
解决表达式问题使将先前存在的类型扩展到新方法成为可能，所有这些都不重新编译现有代码。
While it's always a good thing to use existing code and projects when they do match what you're doing, don't be afraid to conclude that the problem you're solving really is a new problem.
在现有代码和项目与您要做的事相符合时使用它们是一件好事，不要因为您要解决的问题实际上是一个新问题而感到害怕。
The release of atomic energy has not created a new problem. It has merely made more urgent the necessity of solving an existing one.
原子能的释放并没有造成一个新问题，它只是使解决一个当前问题的必要性更加迫切。
应用推荐