Isaac Sheff created THRIFT-4005:
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Summary: Better Haskell Support for Union Types in Thrift
Key: THRIFT-4005
URL: https://issues.apache.org/jira/browse/THRIFT-4005
Project: Thrift
Issue Type: Improvement
Components: Haskell - Compiler, Haskell - Library
Affects Versions: 1.0
Reporter: Isaac Sheff
Priority: Minor
Fix For: 1.0
Thrift's Haskell implementation presently expresses union types as product
types. While this is sufficient for functionality, and may mirror the way
Thrift works under the hood, it requires the programmer to write unnecessary
runtime checks and matches to find the filled field, and verify there is
precisely one.
I propose augmenting the existing Haskell Thrift system with union Haskell
types for union Thrift types, and augmenting the interface definitions so the
user can define a service in terms of either the legacy product types or the
new union types.
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