在Erlang中，如何从模块导入所有函数？ [英] In Erlang how can I import all functions from a module?

问题描述

我不知道如何导入模块的所有功能，而无需指定各个功能。

I can't figure out how to import all the functions of a module without having to specify the individual functions.

推荐答案

正如Christian所说：不可能从模块导入所有功能。编译器没有 import_all 指令，我认为这是故意的，以阻止过多的功能导入。

As Christian says, "It is not possible to import all functions from a module." The compiler has no import_all directive and I think this is done deliberately to discourage excessive function importing.

导入功能完全符合他们 M：F（...）通常是不好的风格。调用模块本地函数和另一个模块中的函数（代码加载规则）之间存在语义上的差异，所以我认为最好让外部调用显式。可能会导入dict / lists / sets模块函数的异常，因为这些通常被理解，并且在代码升级期间不太可能发生变化。

Importing functions instead of fully qualifying them M:F(...) is usually bad style. There is a semantic difference between calling a module-local function and a function in another module (code-loading rules), so I think it's best to make foreign calls explicit. One could possibly make exceptions for importing dict/lists/sets module functions, as those are commonly understood and are unlikely to change during a code upgrade.

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