Proc & Lambda

# They both stores a block in a variable
#Differences:
  1. Proc doesnt care the number of arguments passed
  2. Proc exist out of a code block, when it meets 'return' while lambda processes return as moves on till 'end'
  
  
#Sample Proc 
full_name = Proc.new {|first, last| first + " " + last}
  p full_name["Jane", "Smith"]
  
#Sample Lambda
full_name = lambda{|first, last| first + " " + last}
p full_name["Jane", "Smith"]

#Another syntax for lambda in RoR aka stabby lambda
full_name = ->(first, last) {first + " " + last}
p full_name["Jane", "Smith"]