Question

I am new to ruby. I tried to do a simple method(with parameter) call.

class MeowEncoder
    def method(c)
        puts c
        end
    end

print "please enter the thing you want"
s = gets.chomp()
MeowEncoder.method(s)

It is only passing parameter and prints it out. But the terminal keep giving me errors like

:MeowEncoder.rb:9: undefined method `toBinary' for MeowEncoder:Class (NoMethodError)

what is going on here?

I made some enhancement.

class MeowEncoder
        def encode(n)
            toBianry(?n)
            puts ""
        end

        def toBinary(n)
            if n < 2
                print n
            else
                toBinary(n / 2)
                print n % 2
            end
        end
    end

    o = MeowEncoder.new


    print "please enter the thing you want: "
    s = gets.chomp()
    s.each_char{|c| o.encode(c)} #this doesn't work
    o.toBinary(212)  # this works

I made some enhancement here. I try to convert a char to its ASCII value then to its binary form. I can made the single toBinary works. But the Encode method also gave me same error. What happened?

Answer 1

You defined an instance method, but you’re trying to call it on a class object. Try this:

MeowEncoder.new.method(s)

Also, method is a bad name for a method. It will cause a name clash.