位置:首頁 > 腳本語言 > Ruby基礎教程 > Ruby注釋

Ruby注釋

Ruby行內注釋的代碼在運行時被忽略。單行注釋#字符開始,他們從#到行末如下:

#!/usr/bin/ruby -w

# This is a single line comment.

puts "Hello, Ruby!"

上述程序執行時,會產生以下結果:

Hello, Ruby!

Ruby的多行注釋

可以注釋掉多行使用 =begin 和 =end 語法如下:

#!/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

上述程序執行時,會產生以下結果:

Hello, Ruby!

確保後麵的注釋是保持足夠的距離的代碼,能使它很容易區分。如果在一個塊中存在一個以上的尾端注釋它們對齊。例如:

@counter      # keeps track times page has been hit
@siteCounter  # keeps track of times all pages have been hit