Ruby - Using ensure clause to do file closing

Description

Using ensure clause to do file closing

Demo

f = File.new( "main.rb" )
begin#  w w w. j  a  v  a  2s. c  o  m
    for i in (1..6) do
        puts("line number: #{f.lineno}")
        line = f.gets.chomp
        num = line.to_i
        puts( "Line '#{line}' is converted to #{num}" )
        puts( 100 / num )
    end
rescue Exception => e
    puts( e.class )
    puts( e )
ensure
    f.close
    puts( "File closed" )
end

Result

Related Topic

• Handling exceptions
• Exception Handler Syntax
• Using passed exceptions
• raise: Reactivate a Handled Error
• Omitting begin and end in exception handler
• Exception handler
• Handler all possible exceptions
• Handling multiple exception types
• retry: Attempt to Execute Code Again After an Error
• rescue else: Execute Code When No Error Occurs
• Ensure exception handler

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