Ruby: Quote String
Quote String Literally
Use single quote to quote string exactly. (literal string)
# -*- coding: utf-8 -*- # ruby # use single quote for string exactly as is aa = 'tiger' p aa # prints "tiger" # single quoted string containing newline or tab will be printed as they are cc = 'a b' print cc # prints 2 lines
String with Escape and Embeded Expression
Use double quote for string that contains newline escape \n
, or include variable values or Ruby code.
# -*- coding: utf-8 -*- # ruby mm = "tiger\nsnake" puts mm # prints each word in separate line
You can use \n
for newline, and \t
for tab, etc.
To evaluate a variable or Ruby code within a string, use #{…}
.
# -*- coding: utf-8 -*- # ruby # put variable value inside a string aa = 4 bb = "there are #{aa} tigers" p bb # prints “there are 4 tigers” # eval Ruby code inside a string p "there are #{1+2} tigers" # prints “there are 3 tigers”
For long string, you can also use:
%q{…}
for uninterpolated string.%Q{…}
for interpolated string.
(note: Ruby's string quoting is very similar to Perl's.)
This is similar to Perl's q{…}
and qq{…}
.