Ruby行內(nèi)注釋的代碼在運(yùn)行時(shí)被忽略。單行注釋＃字符開始，他們從＃到行末如下：
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#!/usr/bin/ruby -w# This is a single line comment.puts "Hello, Ruby!" |
上述程序執(zhí)行時(shí)，會(huì)產(chǎn)生以下結(jié)果：
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Hello, Ruby! |
Ruby的多行注釋
可以注釋掉多行使用 =begin 和 =end 語(yǔ)法如下:
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#!/usr/bin/ruby -wputs "Hello, Ruby!"=beginThis is a multiline comment and con spwan as many lines as youlike. But =begin and =end should come in the first line only. =end |
上述程序執(zhí)行時(shí)，會(huì)產(chǎn)生以下結(jié)果：
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Hello, Ruby! |
確保后面的注釋是保持足夠的距離的代碼，能使它很容易區(qū)分。如果在一個(gè)塊中存在一個(gè)以上的尾端注釋它們對(duì)齊。例如：
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@counter # keeps track times page has been hit@siteCounter # keeps track of times all pages have been hit |
