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Timestamp datatype #280

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jclark opened this issue Jul 26, 2019 · 2 comments
Open

Timestamp datatype #280

jclark opened this issue Jul 26, 2019 · 2 comments
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Area/Lang Relates to the Ballerina language specification grpc Improves support for gRPC and protocol buffers Type/Improvement Enhancement to language design
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Giselle

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@jclark
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jclark commented Jul 26, 2019

Provide additional timestamp basic type.

This is complicated and will need a separate design doc.
@jclark jclark added Area/Lang Relates to the Ballerina language specification grpc Improves support for gRPC and protocol buffers Type/Improvement Enhancement to language design labels Jul 26, 2019
@jclark jclark added this to the 2019R4 milestone Aug 14, 2019
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jclark commented Aug 14, 2019

There is now a proposal. See #287 for discussion issue.

@jclark jclark modified the milestones: 2019R5, 2020R1, 2020R2 Dec 21, 2019
@jclark jclark mentioned this issue Feb 28, 2020
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jclark commented Mar 1, 2021

I suspect there will be several data-types like timestamp. What we need from these data-types is

  • each one is its own type (sort of like distinct types)
  • works as anydata
  • immutable (probably)
  • have a string representation (e.g. ISO 8601 for timestamp)
  • handled in JSON by representing as a string
  • fromJsonWithType and toJson deal with it by converting from and to string representation
  • should be able to define ordering

We really don't want these data-types to be keywords, since that will break code every time we add one.

It would be nice if we could add some generic features that allow this to be done at the library level.

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