无需回头使用显式的(和冗长的)条件块，而是用规则定义自动处理问题。
Rather than revert back to explicit (and lengthy) conditional blocks, the rule definitions take care of matters automatically.
自动的存储库收缩：Git要求您显式地对存储库进行收缩和垃圾收集，而Mercurial自动地执行功能相当的操作。
Automatic repository packing: Git requires that you explicitly pack and garbage-collect its repositories, while Mercurial performs its equivalent operations automatically.
编译器只会对具有显式参数的完整函数定义和简单的不可变值执行自动泛化。
The compiler performs automatic generalization only on complete function definitions that have explicit arguments, and on simple immutable values.
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