Is there any difference between 'Proc' and 'proc'?

Question

In the ex:
greet = Proc.new do |x|
puts "Welcome #{x}"
end

goodbye = Proc.new do |x|
puts "Goodbye #{x}"
end

def say(arr, proc)
arr.each { |x| proc.call x}

people = ["David", "Amy", "John"]
say(people, greet)
say(people, goodbye)

If i am changing any 'proc' to 'Proc' or vice-versa then it's showing error.
Please someone guide me. Thanks

Answer 1

Ruby is a sensitive cased language which means case and Case are not the same, Its the same when declaring a variable, or getting the Proc. You cant just do proc.new do instead you need Proc.new do :D

Answer 2

proc is a parameter of the functions "say" so it is not a Proc.:D

Answer 3

My pleasure :D

Answer 4

MrCoder, oh ya i got it now, Thanks (y)

Answer 5

MrCoder Thanks for your answer but they used 'Proc' and 'proc' in the same program. Why so?

Answer 6

Proc is a class, it's a constant, proc is just a parameter.