s = "I have white space".delete(' ')

并模拟PHP的trim()函数:

s = "   I have leading and trailing white space   ".strip

这里有很多建议，但当我读到你的问题和说“删除所有空白”的具体行时，我想到的是:

" a b c " => "abc"

如果这确实是需要的，你可以做这个简单的操作

wide_string = " a b c "

narrow_string = wide_string.delete(" ")

# you can pass all the different kinds 
# of whitespaces that you want to remove

puts narrow_string # => "abc"

我个人倾向于使用.tr方法

如:

string = "this is a string to smash together"

string.tr(' ', '') # => "thisisastringtosmashtogether"

感谢@FrankScmitt指出，要删除所有空白(不仅仅是空格)，你需要这样写:

string = "this is a string with tabs\t and a \nnewline"

string.tr(" \n\t", '') # => "thisisastringwithtabsandanewline"

我会用这样的方法:

my_string = "Foo bar\nbaz quux"

my_string.split.join
=> "Foobarbazquux"

" Raheem Shaik ".strip

它将删除左边和右边的空格。 这段代码会给我们"拉希姆·谢克"

现在说这个有点晚了，但是任何在谷歌上搜索这个页面的人都可能对这个版本感兴趣

如果你想清理一大块预先格式化的文本，用户可能以某种方式剪切和粘贴到你的应用程序，但保留单词间距，试试这个:

content = "      a big nasty          chunk of     something

that's been pasted                        from a webpage       or something        and looks 

like      this

"

content.gsub(/\s+/, " ").strip

#=> "a big nasty chunk of something that's been pasted from a webpage or something and looks like this"