Ruby 去掉結尾空格

標籤：

有幾個方法可選

• strip() #對字串中間的空白不做任何處理

 irb(main):012:0> " \tHello \n world.\r\n  ".strip=> "Hello \n world."irb(main):013:0> " \tHello \n world.\r\n  ".lstrip=> "Hello \n world.\r\n  "irb(main):014:0> " \tHello \n world.\r\n  ".rstrip=> " \tHello \n world."

*gsub() #用Regex全字串匹配

irb(main):020:0> " \tHello \n world.\r\n  ".gsub(/\s+/,‘‘)=> "Helloworld."irb(main):021:0> " \tHello \n world.\r\n  ".gsub(‘ ‘,‘‘)=> "\tHello\nworld.\r\n"irb(main):023:0> " \tHello \n world.\r\n  ".gsub("\n",‘‘)=> " \tHello  world.\r  "irb(main):024:0> " \tHello \n world.\r\n  ".gsub("\n",‘‘).gsub("\r",‘‘)=> " \tHello  world.  "

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Ruby 去掉結尾空格