48 lines
1.2 KiB
Markdown
48 lines
1.2 KiB
Markdown
|
---
|
|||
|
title: Ruby Comments
|
|||
|
localeTitle: Ruby评论
|
|||
|
---
|
|||
|
# Ruby评论
|
|||
|
|
|||
|
注释是代码中的注释行,在运行时被忽略(这意味着它们在源代码中可见但在运行程序时不会打印出来)。
|
|||
|
|
|||
|
在Ruby中,单行注释以`#`字符开头并延伸到行尾。评论可以是自己的行或代码。
|
|||
|
|
|||
|
```Ruby
|
|||
|
puts "Learning to code is fun!"
|
|||
|
|
|||
|
# I am a single line comment.
|
|||
|
|
|||
|
puts "Ruby is a great language!" # Me too - I am a trailing comment.
|
|||
|
```
|
|||
|
|
|||
|
执行时,上面的程序产生以下内容:
|
|||
|
```
|
|||
|
Learning to code is fun!
|
|||
|
Ruby is a great language!
|
|||
|
```
|
|||
|
|
|||
|
您可以通过在`=begin`和`=end`之间添加注释来执行多行注释。 `=begin`和`=end`必须从行的最开始开始, `=end`必须在它自己的一行上。
|
|||
|
|
|||
|
```ruby
|
|||
|
=begin
|
|||
|
I am a multi-line comment
|
|||
|
and I can be as long as I please.
|
|||
|
See, still going!
|
|||
|
=end
|
|||
|
|
|||
|
puts "Hello World!"
|
|||
|
|
|||
|
=begin It's ok to start the comment on the same
|
|||
|
line as "=begin" (though it's more readable if
|
|||
|
you don't) but you can't put a space or any
|
|||
|
text before "=begin" or "=end" and you can't put
|
|||
|
anything on the same line after "=end".
|
|||
|
=end
|
|||
|
```
|
|||
|
|
|||
|
执行时,上面的程序产生以下内容:
|
|||
|
```
|
|||
|
Hello World!
|
|||
|
|
|||
|
```
|