ruby begin rescue ensure

Sure! Here is an explanation of the begin, rescue, and ensure keywords in Ruby:

• The begin keyword marks the beginning of a block of code where exceptions may occur. It is followed by the code that you want to execute.
• The rescue keyword is used to handle exceptions that are raised within the begin block. It allows you to specify what actions should be taken when an exception occurs. You can have multiple rescue clauses to handle different types of exceptions.
• The ensure keyword is used to specify a block of code that will always be executed, regardless of whether an exception is raised or not. It is placed after the rescue block(s) and ensures that certain actions are taken regardless of the outcome.

Here is an example that demonstrates the use of begin, rescue, and ensure:

begin
  # Code that may raise an exception
  result = 10 / 0
rescue ZeroDivisionError
  # Code to handle the ZeroDivisionError
  puts "Cannot divide by zero."
ensure
  # Code to be executed regardless of whether an exception occurred or not
  puts "This will always be printed."
end

In this example, the begin block contains the code 10 / 0, which will raise a ZeroDivisionError exception. The rescue block specifies that if a ZeroDivisionError occurs, the message "Cannot divide by zero." should be printed. The ensure block ensures that the message "This will always be printed." is printed regardless of whether an exception occurred or not.

By using begin, rescue, and ensure, you can handle exceptions and ensure that certain actions are taken regardless of the outcome.