class BigDecimal - Documentation for Ruby 4.0
Description: Documentation for the BigDecimal class
Keywords: ruby,class,BigDecimal

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# class BigDecimal

### Public Class Methods

json_create (object)
Source

    # File ext/json/lib/json/add/bigdecimal.rb, line 13
    def self.json_create(object)
      BigDecimal._load object['b']
    end

See `as_json`.

### Public Instance Methods

as_json (*)
Source

    # File ext/json/lib/json/add/bigdecimal.rb, line 35
    def as_json(*)
      {
        JSON.create_id => self.class.name,
        'b'            => _dump.force_encoding(Encoding::UTF_8),
      }
    end

Methods `BigDecimal#as_json` and `BigDecimal.json_create` may be used to serialize and deserialize a BigDecimal object; see `Marshal`.

Method `BigDecimal#as_json` serializes `self`, returning a 2-element hash representing `self`:

    require 'json/add/bigdecimal'
    x = BigDecimal(2).as_json             # => {"json_class"=>"BigDecimal", "b"=>"27:0.2e1"}
    y = BigDecimal(2.0, 4).as_json        # => {"json_class"=>"BigDecimal", "b"=>"36:0.2e1"}
    z = BigDecimal(Complex(2, 0)).as_json # => {"json_class"=>"BigDecimal", "b"=>"27:0.2e1"}

Method `JSON.create` deserializes such a hash, returning a BigDecimal object:

    BigDecimal.json_create(x) # => 0.2e1
    BigDecimal.json_create(y) # => 0.2e1
    BigDecimal.json_create(z) # => 0.2e1

to_json (*args)
Source

    # File ext/json/lib/json/add/bigdecimal.rb, line 55
    def to_json(*args)
      as_json.to_json(*args)
    end

Returns a `JSON` string representing `self`:

    require 'json/add/bigdecimal'
    puts BigDecimal(2).to_json
    puts BigDecimal(2.0, 4).to_json
    puts BigDecimal(Complex(2, 0)).to_json

Output:

    {"json_class":"BigDecimal","b":"27:0.2e1"}
    {"json_class":"BigDecimal","b":"36:0.2e1"}
    {"json_class":"BigDecimal","b":"27:0.2e1"}