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Named tuples second implementation#19174

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odersky merged 68 commits intoscala:mainscala/scala3:mainfrom

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May 7, 2024

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Commits on May 6, 2024

• Improvements to tuples: Drop experimental

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• Improvements to Tuples: New methods

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• Improvements to tuples: Allow prefix slice in fromArray

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• Improvements to tuples: Rearrange types into a more logical order

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• Improvements to tuples: more new types and methods

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• Add NamedTuple object to library

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• Support for named tuples with new representation

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• Add doc page

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• Make NamedTuple covariant in its value type

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• Various tweaks

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• Harden NamedTuple handling against ill-formed NamedTuples

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• Fix test

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• Simplify tupleElementTypes unapply handling

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• Fix pattern matching for get matches

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• Another fix for named get patterns

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• Avoid widening into unreducible types when inferring types

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• Fix rebase breakage

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• Make NamedTuples work under new MatchType spec

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• Avoid TypeError exception in RefinedPrinter

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• Move named-tuples-strawman.ccala to pending

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• Update check file

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• Better printing of NamedTuple type trees

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• Add FieldsOf type

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• Describe and add tests for source incompabilities

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• Rename NamedTuple.FieldsOf --> NamedTuple.From

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• Implement Fields as a Selectable type member

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• Refactor typedSelect

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• Add section on computable field names to reference doc page

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• Fix fields as a selectable type member

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• Make NamedTuple.From work for named tuple arguments

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• Fix NamedArg term/type classification

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• Rename inMode to withModeBits

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• Revert NamedArg term/type classification

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• Update MimaFilters

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• Fix rebase breakage in Parsers.scala

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• Add tyql test case

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• Introduce auto-conversion from named tuples to tuples

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• Update documentation following review suggestions

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• Drop TreeInfo's `dropNamedArg`

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• Print wildcard types in named tuples correctly

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• Don't abbreviate tuple bindings if right-hand-side is named

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• Strip named tuple from scrutinee when testing refutability of a named pattern match

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• Fix tuple selection in pattern matcher

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• Fixes to NamedTuple

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• More tests

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• Mention restriction against `_1`, `_2`, ... as named tuple labels

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• Address review comments on Tuple.scala

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• Reject recursive dynamicSelect corner case

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• Update compiler/src/dotty/tools/dotc/typer/Typer.scala

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• Update tests/neg/unselectable-fields.check

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• Use consistent naming and drop remaining braces in tuple type ops

  

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• Add an infix shorthand for `Append[X, Y]`

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• Drop unreachable case from `type Zip`

  

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• Document `Concat` covariance in 2nd parameter

  

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• Refine bounds of `type Filter` predicate

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• Do `contains` runtime operation based on term equality

  

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• Do `indexOf` runtime operation based on term equality

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• Do `filter` runtime operation based on a term level predicate

  

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• Mark `type Append` 2nd argument as covariant

  

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• Move `NonEmptyTuple` methods into `Tuple`

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• Reorder operations to be same between term and type level

  

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• Drop braces remaining at term level

  

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• Fix `def indexOf` to return the size instead of -1

  

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• Revert doing tuple runtime operations based on a term level predicates

  

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• Make named-tuples-strawman-2.scala a run test

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• import language.experimental.namedTuples in pos/fieldsOf.scala

  

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Commits on May 7, 2024

• Undo all unnecessary changes to Tuples.

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• Revert the addition of `type Fields` in `Selectable`.

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