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1707Re: Universal Binary JSON Specification

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  • rkalla123
    Sep 21, 2011

      I see your point. The way I understand it is that this would require 2 new data types, effectively BigInt and BigDecimal.

      So say something along these lines:

      bigint - marker 'G'
      [G][129][129 big-endian ordered bytes representing a BigInt]

      bigdouble - marker 'W'
      [W][222][222 big-endian ordered bytes representing a BigDecimal]


      --- In json@yahoogroups.com, Don Owens <don@...> wrote:
      > I've seen very large numbers used in JSON. In Perl, that can be represented
      > as a Math::BigInt object. And that is the way I have implemented it in my
      > JSON module for Perl (JSON::DWIW). Python has arbitrary length integers
      > built-in. For my own language that I'm working on, I'm using libgmp in C to
      > handle arbitrary length integers.
      > JSON is used as a data exchange format. I want to be able to do a
      > roundtrip, e.g., Python -> encoded -> Python with native integers (with
      > arbitrary length in this case). In JSON, this just works, as far as the
      > encoding is concerned. I see the need for this in any binary JSON format as
      > well. If a large number is represented as a string, then on the decoding
      > side, you don't know if that was a number or a string (just because it looks
      > like a number doesn't mean that the sender means it's a number). If, when
      > decoding JSON, the library can't handle large numbers, it has to throw an
      > error anyway. The same should go for binary JSON.
      > ./don
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