动态Rstudio代码段 [英] Dynamic Rstudio Code Snippet
问题描述
我倾向于在代码中使用很多换行符，如下所示：
I tend to use a lot of line breaks in my code like the following:
# Data =========================================================================
整个地方注释的长度始终为80个字符（包括井号）。我想做的是为Rstudio编写一个代码片段，该代码片段将插入＃标签，然后插入一个空格，然后允许用户键入一系列单词，然后插入另一个空格，最后填写一堆 =直到达到80个字符的限制。
Where the entire comment is always 80 characters long (including the hashtag). What I would like to do is write a code snippet for Rstudio that will insert the hashtag, then a space, then allow the user to type out a series of words, then insert another space, and finally fill in a bunch of "=" until the 80 character limit is reached.
我根本不了解摘要的工作原理，因此不确定这有多困难。
I'm not familiar with how snippets work at all so I'm not sure how difficult this is.
我有很多：
snippet lb
# ${1:name}
但我不知道如何添加动态数字 =。另外，lb =换行符。
but I have no idea how to add a dynamic number of "=" signs. Also, lb = linebreak.
推荐答案
不幸的是，您无法使用摘要来实现此目的；代码段是一个文本模板，其中包含固定文本，带有用于用户插入的文本的插槽。
You can't do this with snippets, unfortunately; a snippet is a text template that contains fixed text with slots for user-inserted text.
RStudio内置了一个命令，可以执行非常相似的操作。从代码菜单中，选择插入节（或 Ctrl + Shift + R ）。这将完全按照您的描述进行操作，但有两个小区别：
There is a command built into RStudio to do something very similar, however; from the Code menu, choose Insert Section (or Ctrl+Shift+R). This will do exactly what you're describing, with two small differences:
-
在打印前该行将扩展到5个字符边距（您可以在工具->全局选项->代码中调整打印边距。
The line will extend to 5 characters before the print margin (you can adjust the print margin in Tools -> Global Options -> Code.
该行由-而不是 = 个字符。
以此方式标记的部分的一个优点是，您可以使用它们来折叠和浏览文件（在添加部分之后查看编辑器状态栏）。
One advantage to sections marked in this way is that you can use them to fold and navigate inside the file (look at the editor status bar after adding one).
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