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2023-01-20errors: move example functions into example_test filefangguizhen
Change-Id: Ide70476698d82a51881802dd6bf05dd7abcd60e8 GitHub-Last-Rev: ddb251ded669d3dbbb96a05f4df7151c8d7c16d2 GitHub-Pull-Request: golang/go#57931 Reviewed-on: https://go-review.googlesource.com/c/go/+/462292 Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Cherry Mui <cherryyz@google.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> Auto-Submit: Ian Lance Taylor <iant@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Run-TryBot: Ian Lance Taylor <iant@google.com>
2022-09-29errors, fmt: add support for wrapping multiple errorsDamien Neil
An error which implements an "Unwrap() []error" method wraps all the non-nil errors in the returned []error. We replace the concept of the "error chain" inspected by errors.Is and errors.As with the "error tree". Is and As perform a pre-order, depth-first traversal of an error's tree. As returns the first matching result, if any. The new errors.Join function returns an error wrapping a list of errors. The fmt.Errorf function now supports multiple instances of the %w verb. For #53435. Change-Id: Ib7402e70b68e28af8f201d2b66bd8e87ccfb5283 Reviewed-on: https://go-review.googlesource.com/c/go/+/432898 Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Rob Pike <r@golang.org> Run-TryBot: Damien Neil <dneil@google.com> Reviewed-by: Joseph Tsai <joetsai@digital-static.net>
2016-03-01all: make copyright headers consistent with one space after periodBrad Fitzpatrick
This is a subset of https://golang.org/cl/20022 with only the copyright header lines, so the next CL will be smaller and more reviewable. Go policy has been single space after periods in comments for some time. The copyright header template at: https://golang.org/doc/contribute.html#copyright also uses a single space. Make them all consistent. Change-Id: Icc26c6b8495c3820da6b171ca96a74701b4a01b0 Reviewed-on: https://go-review.googlesource.com/20111 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
2014-09-08build: move package sources from src/pkg to srcRuss Cox
Preparation was in CL 134570043. This CL contains only the effect of 'hg mv src/pkg/* src'. For more about the move, see golang.org/s/go14nopkg.