This works
irb(main):001:0> name = "Rohit " "Sharma"
=> "Rohit Sharma"
But this doesn't
irb(main):001:0> fname = "Rohit "
=> "Rohit "
irb(main):002:0> lname = "Sharma"
=> "Sharma"
irb(main):003:0> name = fname lname
It gives this error
NoMethodError: undefined method `fname' for main:Object
from (irb):3
Please provide some suggestions. Thanks in advance.
UPDATE
After getting the answers I have written a blog post. Please check it out.
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.
name = fname << lname if you know the quirks.
+. The only situation where you can avoid it is with two double quoted strings next to each other. In the case you mention, you therefore need name = "Rohit" + lname. Hope this clears it up for you. In fact, always use + and you will be fine - there's no need to skip the +, even in the case name = "Rohit " + "Sharma".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
Just put a + inbetween them like
name = fname + lname
string + string is defined to return a new string containing the two inputs concatenated together.
