Problem with Ruby string concatenation

Question

This works

irb(main):001:0> name = \"Rohit \" \"Sharma\"
=> \"Rohit Sharma\"

But this doesn\'t

irb(main):001:0> fn         


        

Answer 1

Just put a + inbetween them like

name = fname + lname

string + string is defined to return a new string containing the two inputs concatenated together.

Answer 2

The error is related to the fact that fname would have to be a function for this to work. Instead, try

name = fname + lname

or even

name = "#{fname}#{lname}"

but where you had

name = "Rohit " "Sharma"

it is a special case, since Ruby will join the two strings automatically.

Answer 3

When you do

name = "Rohit " "Sharma"

You don't create two Strings objects that then merge together to create one string. Instead, the Ruby (interpreter/compiler/whatever) looks at the code, and merges it together before producing a single String object.

So you can do

name = "Rohit " "Sharma"

but not

first_name_plus_space = "Rohit "
last_name = "Sharma"
name = first_name_plus_space last_name