模块和包装Ocaml之间的区别 [英] Difference between module and package Ocaml
问题描述
我基本上是在尝试遵循本文中的stackoverflow答案:
I'm basically trying to follow this stackoverflow answer located in this post:
，我遇到了问题.当我尝试仅使用
and I'm running in to problems. When I am trying to run a single file with just
open Lwt ;;
我得到了一个错误，并说它是一个未绑定的模块.我已经执行了以下opam指令:
I am getting and error saying it is an unbound module. I have run the following opam instruction:
opam install lwt
，它确实安装了正确的 package .
and it did install the correct package.
因此，我认为问题在于模块和软件包之间的差异，我对此并不了解.我一直在寻找这个问题作为可能的答案，但是我不确定这是否是我所需要的.
So I think the problem is the difference between a module and a package, which I don't really understand. I was looking at this question as a possible answer, but I wasn't sure if it was what I needed.
感谢输入专家，我是Ocaml的新手，我正在尝试学习构建东西的来龙去脉.
Thanks for the input guys, I'm new to Ocaml and I'm trying to learn the ins and outs of building something.
推荐答案
要使用程序包"，必须明确告知编译器有关此程序包的信息. OCaml中的未绑定模块通常意味着以下两种情况之一:您对模块名称进行了打错，或者未能设置正确的模块搜索路径.您使用什么编译器选项?
To use a "package", you must tell the compiler about it explicitly. Unbound module in OCaml usually means one of two things: your made a typo of the module name, or you failed to set a proper module search path. What compiler options do you use?
如果您使用ocamlfind，则编译应如下所示:
If you use ocamlfind, the compilation should look like:
ocamlfind ocamlc -package lwt -c mymodule.ml
ocamlfind ocamlc -package lwt -c mymodule.ml
这指示编译器除了默认模块外，还尝试在lwt软件包安装目录中查找模块.
this instructs the compiler to try to find modules in lwt package installation directory, in addition to the default ones.
如果您不使用ocamlfind....好吧，请使用ocamlfind.
if you do not use ocamlfind.... well, use ocamlfind.
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