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Source: golang-github-hashicorp-errwrap
Section: devel
Priority: extra
Maintainer: Debian Go Packaging Team <pkg-go-maintainers@lists.alioth.debian.org>
Uploaders: Tianon Gravi <tianon@debian.org>, Tim Potter <tpot@hpe.com>
Build-Depends: debhelper (>= 9),
dh-golang,
golang-go
Standards-Version: 3.9.6
Homepage: https://github.com/hashicorp/errwrap
Vcs-Browser: https://anonscm.debian.org/cgit/pkg-go/packages/golang-github-hashicorp-errwrap.git
Vcs-Git: git://anonscm.debian.org/pkg-go/packages/golang-github-hashicorp-errwrap.git
XS-Go-Import-Path: github.com/hashicorp/errwrap
Package: golang-github-hashicorp-errwrap-dev
Architecture: all
Depends: ${shlibs:Depends},
${misc:Depends},
golang-go
Description: Errwrap is a Go (golang) library for wrapping and querying errors
errwrap is a package for Go that formalizes the pattern of wrapping errors and
checking if an error contains another error.
.
There is a common pattern in Go of taking a returned error value and then
wrapping it (such as with fmt.Errorf) before returning it. The problem with
this pattern is that you completely lose the original error structure.
.
Arguably the correct approach is that you should make a custom structure
implementing the error interface, and have the original error as a field on
that structure, such as this example. This is a good approach, but you have to
know the entire chain of possible rewrapping that happens, when you might just
care about one.
.
errwrap formalizes this pattern (it doesn't matter what approach you use above)
by giving a single interface for wrapping errors, checking if a specific error
is wrapped, and extracting that error.
.
This package contains the source.
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