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write_with_backup(path) click to toggle source

Equivalent to +File::open+ with an associated block, but moves any existing file with the same name to the side first.

# File lib/inline.rb, line 839
def self.write_with_backup(path) # returns true if file already existed

  # move previous version to the side if it exists
  renamed = false
  if test ff, path then
    renamed = true
    File.rename path, path + ".old"
  end

  File.open(path, "w") do |io|
    yield(io)
  end

  return renamed
end

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