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40 lines
982 B
Markdown
40 lines
982 B
Markdown
# YAML Is A Superset Of JSON
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Put another way, JSON is a subset of YAML.
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Here is what the YAML spec has to say:
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> YAML can therefore be viewed as a natural superset of JSON, offering improved
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> human readability and a more complete information model. This is also the
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> case in practice; every JSON file is also a valid YAML file.
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We can _see_ this in practice by using our favorite YAML parse to read a JSON
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file. For me that is Ruby and its built-in YAML library.
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First, consider the following JSON file (`data.json`):
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```json
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{
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"data": [
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"one",
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"two",
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"three"
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],
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"number": 22
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}
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```
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Now, I'll open up an IRB session (Ruby's interactive REPL) and read it in.
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```ruby
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> require 'yaml'
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=> true
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> YAML.load_file('data.json')
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=> {"data"=>["one", "two", "three"], "number"=>22}
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```
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It works. And for me, having not considered those two format related, this
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isn't something I would have expected to work.
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[source](http://yaml.org/spec/1.2/spec.html#id2759572)
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