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go/types: TypeList has a String method, but TypeParamList does not #50760

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findleyr opened this issue Jan 22, 2022 · 2 comments
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go/types: TypeList has a String method, but TypeParamList does not #50760

findleyr opened this issue Jan 22, 2022 · 2 comments
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FrozenDueToAge NeedsDecision Feedback is required from experts, contributors, and/or the community before a change can be made.
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Go1.18

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@findleyr
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findleyr commented Jan 22, 2022 •
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Issue #47916 does not document the String method for types.TypeList (added in https://go.dev/cl/346552 to aid with debugging). Furthermore the otherwise symmetric TypeParamList type does not have a String method.

These two list types should be symmetric. Since types.TypeList.String was not covered by the proposal, probably we should remove this method and propose it for 1.19.

CC @griesemer
@findleyr findleyr added this to the Go1.18 milestone Jan 22, 2022
@griesemer
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Removing String from types.TypeList is fine, but we should ensure that we're not breaking any (possibly debugging) output that uses %s and relies on TypeList implementing Stringer.

On the other hand, there's also a format question for types.TypeParamList.String: what exactly should it print? (actual type parameter list with square brackets and constraints? just the type parameter names?)

@mknyszek mknyszek added the NeedsDecision Feedback is required from experts, contributors, and/or the community before a change can be made. label Jan 24, 2022
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Change https://golang.org/cl/381634 mentions this issue: go/types, types2: delete TypeList.String

@golang golang locked and limited conversation to collaborators Jan 28, 2023
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