rubyplayground/loggers.rb at master · colmose/rubyplayground · GitHub

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def log block_description, &block
  puts 'Beginning "'+block_description+'" . . .'
  value_returned = block.call
  puts '. . . "'+block_description+'" finished, returning:'
  puts value_returned
end

log 'outer block' do

  log 'some little block' do
    5
  end

  log 'yet another block' do
    'I like Thai food!'
  end

  false
end

$depth = 0
$space = ' '

def better_log description, &block
  puts $space*$nesting_depth + 'Beginning "'+block_description+'" ...'
  $nesting_depth = $nesting_depth + 1
  value_returned = block.call
  $nesting_depth = $nesting_depth - 1
  puts $space*$nesting_depth + '... "'+block_description+'" finished, returning:'
  puts $space*$nesting_depth + value_returned.to_s
end


log 'outer block' do

  log 'some little block' do

    log 'teeny-tiny block' do
      'lots of love'
    end

    42
  end

  log 'yet another block' do
    'I love Indian food!'
  end

  true
end