发布于 2015-07-11 02:52:38 | 230 次阅读 | 评论: 0 | 来源: 网络整理
Ruby行内注释的代码在运行时被忽略。单行注释#字符开始,他们从#到行末如下:
#!/usr/bin/ruby -w
# This is a single line comment.
puts "Hello, Ruby!"
上述程序执行时,会产生以下结果:
Hello, Ruby!
可以注释掉多行使用 =begin 和 =end 语法如下:
#!/usr/bin/ruby -w
puts "Hello, Ruby!"
=begin
This is a multiline comment and con spwan as many lines as you
like. But =begin and =end should come in the first line only.
=end
上述程序执行时,会产生以下结果:
Hello, Ruby!
确保后面的注释是保持足够的距离的代码,能使它很容易区分。如果在一个块中存在一个以上的尾端注释它们对齐。例如:
@counter # keeps track times page has been hit
@siteCounter # keeps track of times all pages have been hit