库/包开发 - 加载时的消息 [英] Library/package development - message when loading

问题描述

有没有办法在用户加载 library(myCustomLibrary) 时显示消息?加载后，我想显示一条消息，告诉用户如何运行所有测试功能.

is there any way to display a message when a user loads library(myCustomLibrary)? Upon loading, I want to display a message that tells the user how to run all the test functions.

推荐答案

是的.您可以使用 .onLoad、.onAttach 或 .First.lib 函数在加载包时执行任何操作.我建议查看这些功能的帮助.您将使用带有命名空间的 .onLoad，而没有使用 .First.lib.

Yes. You can use the .onLoad, .onAttach, or .First.lib functions to do whatever you want when the package is loaded. I suggest looking at the help for those functions. You would use .onLoad with a namespace, and .First.lib without.

一个约定是人们经常将这些命令放在一个单独的 zzz.R 文件中，该文件仅用于打包相关代码.

One convention is that people will frequently put these commands in a separate zzz.R file, which is just used for package related code.

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