Ruby Language Strings String concatenation
Example
Concatenate strings with the + operator:
s1 = "Hello"
s2 = " "
s3 = "World"
puts s1 + s2 + s3
# => Hello World
s = s1 + s2 + s3
puts s
# => Hello World
Or with the << operator:
s = 'Hello'
s << ' '
s << 'World'
puts s
# => Hello World
Note that the << operator modifies the object on the left hand side.
You also can multiply strings, e.g.
"wow" * 3
# => "wowwowwow"
