They provide some tools that imperative languages usually don't.
它们提供了命令式语言通常不提供的一些工具。
Users of imperative languages rely on assignments more than any other programming technique.
命令式编程的用户对赋值的依赖要超过其他编程技术。
This means imperative languages like VB and C# can call functional libraries created primarily for F#.
这意味着命令式的语言，如VB和C#，能调用主要为F#创建的函数化函数库。
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