CODEWITHSUNDEEP
ruby
Rosie Red
Rosie Red

Reputation: 73

Getting unexplained uninitialised constant error in Ruby for a hello world program

I have the following code in ruby:

Class Sample
    def hello
        puts "Hello"
    end 

s = Sample.new
s.hello

The error I'm getting is

my_prog.rb:1:in '': uninitialized constant Sample (NameError).

Why am i getting this error message?

Upvotes: 0

Views: 262

Answers (2)

Prashant Ravi Darshan
Prashant Ravi Darshan

Reputation: 545

There is a silly mistake in your code. You should change a little bit code. you have given Class Sample instead of class Sample so ruby interpreter could not find Sample class in my_prog.rb while you are calling a new object of Sample class You can use below code

class Sample
    def hello
        puts 'Hello'
    end
end

sample = Sample.new
sample.hello

Upvotes: 2

ndnenkov
ndnenkov

Reputation: 36101

Your syntax for declaring classes is invalid. Try:

class Sample
  def hello
    puts 'Hello'
  end
end

Sample.new.hello

Also note that unlike languages like java, you don't need a "main" class/method.

puts 'Hello'

will suffice

Upvotes: 6

Related Questions