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Robert Griesemer 03ec8de24b [dev.typeparams] cmd/compile/internal/types2: clean up index expr implementation for type parameters 
This makes the implementation match the intended spec behavior:

Given an index expression a[x] where a is a type parameter, the
index expression is valid if the constraint for a satisfies the
following criteria:

- Either all types in the constraint type set are maps, or none
  of them are.

- If the (type set) types are maps, they must all have the same
  key type. (This may be too strict, perhaps it's sufficient to
  ensure assignability, but we can always relax that later.)

- All (type set) types must have the same element types.

- If there are any arrays, a constant index must be in range for
  the shortest array.

Change-Id: I8c094c11e6fc9496c293871ccf93e3814c881e6f
Reviewed-on: https://go-review.googlesource.com/c/go/+/332553
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-07-07 23:42:12 +00:00
.github .github: add link to questions in ISSUE_TEMPLATE 2020-01-06 17:05:31 +00:00
api testing: add TB.Setenv 2021-07-01 18:35:33 +00:00
doc spec, unsafe: clarify unsafe.Slice docs 2021-07-02 19:26:52 +00:00
lib/time lib/time, time/tzdata: update tzdata to 2021a 2021-01-25 16:08:46 +00:00
misc [dev.typeparams] all: add GOEXPERIMENT=unified knob 2021-06-17 09:09:02 +00:00
src [dev.typeparams] cmd/compile/internal/types2: clean up index expr implementation for type parameters 2021-07-07 23:42:12 +00:00
test [dev.typeparams] cmd/compile: fix bug with types2.Instantiate with interface type param 2021-07-07 22:57:23 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore internal/buildcfg: move build configuration out of cmd/internal/objabi 2021-04-16 19:20:53 +00:00
AUTHORS A+C: update name 2021-06-01 17:08:12 +00:00
codereview.cfg [dev.typeparams] all: update parent repository 2021-02-18 22:34:52 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS A+C: update name 2021-06-01 17:08:12 +00:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
PATENTS LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
README.md README: pull gopher image from website 2021-02-16 18:25:10 +00:00
SECURITY.md SECURITY.md: update go versions 2019-09-26 15:34:57 +00:00

README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

Gopher image Gopher image by Renee French, licensed under Creative Commons 3.0 Attributions license.

Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.

Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.

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After downloading a binary release, visit https://golang.org/doc/install for installation instructions.

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If a binary distribution is not available for your combination of operating system and architecture, visit https://golang.org/doc/install/source for source installation instructions.

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To contribute, please read the contribution guidelines at https://golang.org/doc/contribute.html.

Note that the Go project uses the issue tracker for bug reports and proposals only. See https://golang.org/wiki/Questions for a list of places to ask questions about the Go language.