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go/doc/next/2-language.md

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doc/next: initial contents Initialize the doc/next directory for the next release by copying the contents of doc/initial into it. Also, rewrite doc/README.md to add release instructions and to separate information for developers from information for the release team. Change-Id: Ie1e5c2ddae7a8d301e9b2f8a68925519648aa84d Reviewed-on: https://go-review.googlesource.com/c/go/+/557535 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Jonathan Amsterdam <jba@google.com>
2024-01-22 13:20:07 -05:00
## Changes to the language {#language}
doc: document "range-over-func" language change in release notes For #65614. Change-Id: Idbbcb6eb57b7294d52b174c1aba74ca7aa1b8efd Reviewed-on: https://go-review.googlesource.com/c/go/+/590616 Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Robert Griesemer <gri@google.com> TryBot-Bypass: Robert Griesemer <gri@google.com>
2024-06-04 16:06:12 -07:00
<!-- go.dev/issue/61405, CL 557835, CL 584596 -->
doc: mark range-over-func as documented The language change for the accepted range-over-func proposal #61405 was documented in CL 590616. Remove the corresponding 'TODO' entry. Also improve formatting slightly, and switch to preferred relative links. They'll work better in the long term and in more contexts. While here, also simplify the suggested line to preview release notes locally: setting the -content='' flag explicitly is no longer required as of CL 589936. For #65614. Change-Id: I6cee951b9ede33900bca48c9f709e3b2c5e87337 Reviewed-on: https://go-review.googlesource.com/c/go/+/590756 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org> Reviewed-by: Robert Griesemer <gri@google.com>
2024-06-05 15:21:25 -04:00
Go 1.23 makes the (Go 1.22) ["range-over-func" experiment](/wiki/RangefuncExperiment) a part of the language.
doc: document "range-over-func" language change in release notes For #65614. Change-Id: Idbbcb6eb57b7294d52b174c1aba74ca7aa1b8efd Reviewed-on: https://go-review.googlesource.com/c/go/+/590616 Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Robert Griesemer <gri@google.com> TryBot-Bypass: Robert Griesemer <gri@google.com>
2024-06-04 16:06:12 -07:00
The "range" clause in a "for-range" loop now accepts iterator functions of the following types
doc/next: initial contents Initialize the doc/next directory for the next release by copying the contents of doc/initial into it. Also, rewrite doc/README.md to add release instructions and to separate information for developers from information for the release team. Change-Id: Ie1e5c2ddae7a8d301e9b2f8a68925519648aa84d Reviewed-on: https://go-review.googlesource.com/c/go/+/557535 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Jonathan Amsterdam <jba@google.com>
2024-01-22 13:20:07 -05:00
doc: mark range-over-func as documented The language change for the accepted range-over-func proposal #61405 was documented in CL 590616. Remove the corresponding 'TODO' entry. Also improve formatting slightly, and switch to preferred relative links. They'll work better in the long term and in more contexts. While here, also simplify the suggested line to preview release notes locally: setting the -content='' flag explicitly is no longer required as of CL 589936. For #65614. Change-Id: I6cee951b9ede33900bca48c9f709e3b2c5e87337 Reviewed-on: https://go-review.googlesource.com/c/go/+/590756 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org> Reviewed-by: Robert Griesemer <gri@google.com>
2024-06-05 15:21:25 -04:00
func(func() bool)
func(func(K) bool)
func(func(K, V) bool)
doc: document "range-over-func" language change in release notes For #65614. Change-Id: Idbbcb6eb57b7294d52b174c1aba74ca7aa1b8efd Reviewed-on: https://go-review.googlesource.com/c/go/+/590616 Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Robert Griesemer <gri@google.com> TryBot-Bypass: Robert Griesemer <gri@google.com>
2024-06-04 16:06:12 -07:00
doc: mark range-over-func as documented The language change for the accepted range-over-func proposal #61405 was documented in CL 590616. Remove the corresponding 'TODO' entry. Also improve formatting slightly, and switch to preferred relative links. They'll work better in the long term and in more contexts. While here, also simplify the suggested line to preview release notes locally: setting the -content='' flag explicitly is no longer required as of CL 589936. For #65614. Change-Id: I6cee951b9ede33900bca48c9f709e3b2c5e87337 Reviewed-on: https://go-review.googlesource.com/c/go/+/590756 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org> Reviewed-by: Robert Griesemer <gri@google.com>
2024-06-05 15:21:25 -04:00
as range expressions.
Calls of the iterator argument function produce the iteration values for the "for-range" loop.
doc/next: add motivation and details links for range-over-func iterators The "Changes to the language" section at the top of the release notes will likely ultimately include more explanation about iterators, or at least, the Go project will likely publish additional introductory material on iterators on the blog and so on. As a perhaps temporary step given current interest, this CL updates the release notes with two additional links for details and motivation. The new package documentation for the iter package is up-to-date, precise, and also more accessible than the language spec, while the 2022 pre-proposal GitHub discussion starts with perhaps the most compelling motivation writeup so far. (We purposefully include "2022" in the text to help illustrate this was not the result of an overly hasty process). We also update the target of the existing language spec reference to be closer to the new material. For #61405. Change-Id: I4bc0f99c40f31edfc5c0e635dca5f844b26b6eeb Reviewed-on: https://go-review.googlesource.com/c/go/+/592935 Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com> Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Auto-Submit: Ian Lance Taylor <iant@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-06-15 18:00:19 -04:00
For details see the [iter] package documentation and the [language spec](/ref/spec#For_range).
For motivation see the 2022 ["range-over-func" discussion](/issue/56413).
doc: document GOEXPERIMENT=aliastypeparams in release notes For #65614. Change-Id: I05b20a80b1163e1d3927c2f763ef6b7d20e6a937 Reviewed-on: https://go-review.googlesource.com/c/go/+/590617 Reviewed-by: Robert Griesemer <gri@google.com> Auto-Submit: Robert Griesemer <gri@google.com> TryBot-Bypass: Robert Griesemer <gri@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2024-06-04 16:29:30 -07:00
<!-- go.dev/issue/46477, CL 566856, CL 586955, CL 586956 -->
Go 1.23 includes preview support for [generic type aliases](/issue/46477).
Building the toolchain with `GOEXPERIMENT=aliastypeparams` enables this feature.
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