Ruby 1.9.3 リファレンスマニュアル > ライブラリ一覧 > psychライブラリ > Psychモジュール > dump

singleton method Psych.dump

dump(o, io = nil, options = {})

[TODO]

Dump Ruby object +o+ to a YAML string. Optional +options+ may be passed in to control the output format. If an IO object is passed in, the YAML will be dumped to that IO object.

Example:

# Dump an array, get back a YAML string
Psych.dump(['a', 'b'])  # => "---\n- a\n- b\n"

# Dump an array to an IO object
Psych.dump(['a', 'b'], StringIO.new)  # => #<StringIO:0x000001009d0890>

# Dump an array with indentation set
Psych.dump(['a', ['b']], :indentation => 3) # => "---\n- a\n-  - b\n"

# Dump an array to an IO with indentation set
Psych.dump(['a', ['b']], StringIO.new, :indentation => 3)