Step by Step solution about How to resolve the algorithm Stack traces step by step in the Ruby programming language

The code snippet is a set of nested functions and a rescue block.

• The outer function takes three arguments and calls the middle function with the sum of the first two arguments and the sum of the last two arguments.
• The middle function takes two arguments and calls the inner function with the sum of the two arguments.
• The inner function takes one argument and prints the name of the function that called it and the value of its argument.
• The first block of code demonstrates the call stack by printing the names of the functions that were called and the values of their arguments.
• The second block of code demonstrates an exception being raised and caught by the rescue block. The exception's backtrace is printed and the code continues executing after the rescue block.
• The last line of code prints the current thread's backtrace.

def outer(a,b,c)
  middle a+b, b+c
end

def middle(d,e)
  inner d+e
end

def inner(f)
  puts caller(0)
  puts "continuing... my arg is #{f}"
end

outer 2,3,5


def outer(a,b,c)
  middle a+b, b+c
end

def middle(d,e)
  inner d+e
end

def inner(f)
  raise
  puts "this will not be printed"
end

begin
  outer 2,3,5
rescue Exception => e
  puts e.backtrace
end
puts "continuing after the rescue..."


p Thread.current.backtrace