Sun28Mar

  1. Ruby 1.9.x: j and jj

    j & jj the JSON conversant relatives of p & pp, i.e. they output JSON strings on one line or pretty print them over many lines with indentation respectively.

    ruby-1.9.1-p378 > require 'JSON'
 => true 
ruby-1.9.1-p378 > obj = [{:foo => "bar", "baz" => [1,2,3,4,5]}]
 => [{:foo=>"bar", "baz"=>[1, 2, 3, 4, 5]}] 
ruby-1.9.1-p378 > j obj
[{"foo":"bar","baz":[1,2,3,4,5]}]
 => nil 
ruby-1.9.1-p378 > jj obj
[
  {
    "foo": "bar",
    "baz": [
      1,
      2,
      3,
      4,
      5
    ]
  }
]
 => nil

    Nice. Although it would be nicer if when you did this:

    ruby-1.9.1-p378 > j [{:first_10_natural_numbers => 0..9 }]

    You got this:

    [{"first_10_natural_numbers":[0,1,2,3,4,5,6,7,8,9]}]

    Instead of this:

    [{"first_10_natural_numbers":"0..9"}]

    Oh well.