Data commit

Task/String-concatenation/Ruby/string-concatenation.rb

@@ -0,0 +1,22 @@
+s = "hello"
+
+puts "#{s} template"       #=> "hello template"
+# Variable s is intact
+puts s                     #=> "hello"
+
+puts s + " literal"        #=> "hello literal"
+# Variable s is still the same
+puts s                     #=> "hello"
+
+# Mutating s variable:
+
+s += " literal"
+puts s                     #=> "hello literal"
+s << " another" # append to s, use only when string literals are not frozen
+puts s                     #=> "hello literal another"
+
+s = "hello"
+puts s.concat(" literal")  #=> "hello literal"
+puts s                     #=> "hello literal"
+puts s.prepend("Alice said: ")  #=> "Alice said: hello literal"
+puts s                     #=> "Alice said: hello literal"