commit 60a318af5f3acfdfa3cb247aa29fbcdbb3ac12b6
author Abhinav Gupta <abg@uber.com> Mon Nov 04 10:23:04 2019 -0800
committer GitHub <noreply@github.com> Mon Nov 04 10:23:04 2019 -0800
tree c590d014235c41a76b3c367f1ec49aa19dab0abe
parent c3fc3d02ec864719d8e25be2d7dde1e35a36aa27

Add AppendInto function (#31)

This adds an AppendInto function that behaves similarly to Append
except, it operates on a `*error` on the left side and it reports
whether the right side error was non-nil.

    func AppendInto(*error, error) (errored bool)

Making the left side a pointer aligns with the fast path of `Append`.

Returning whether the right error was non-nil aligns with the standard
`if err := ...; err != nil` pattern.

```diff
-if err := thing(); err != nil {
+if multierr.AppendInto(&err, thing()) {
   continue
 }
```

Resolves #21