How do i remove empty lines from a string? I have tried some_string = some_string.gsub(/^$/, "");
and much more, but nothing works.
Remove blank lines:
str.gsub /^$\n/, ''
Note: unlike some of the other solutions, this one actually removes blank lines and not line breaks :)
>> a = "a\n\nb\n"
=> "a\n\nb\n"
>> a.gsub /^$\n/, ''
=> "a\nb\n"
Explanation: matches the start ^
and end $
of a line with nothing in between, followed by a line break.
Alternative, more explicit (though less elegant) solution:
str.each_line.reject{|x| x.strip == ""}.join
挤压(或挤压!)就是这样 - 没有正则表达式。
str.squeeze("\n")
Replace multiple newlines with a single one:
fixedstr = str.gsub(/\n\n+/, "\n")
or
str.gsub!(/\n\n+/, "\n")
您可以尝试用一个替换所有出现的2个或更多换行符:
my_string.gsub(/\n{2,}/, '\n')
Originally
some_string = some_string.gsub(/\n/,'')
Updated
some_string = some_string.gsub(/^$\n/,'')
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