| commit | 391980c4b2e1cc2c30d2bfae6039815350490495 | [log] [tgz] |
|---|---|---|
| author | Joe Tsai <[email protected]> | Wed Oct 23 16:54:16 2024 |
| committer | GitHub <[email protected]> | Wed Oct 23 16:54:16 2024 |
| tree | a342fe1d68d79a6e3c436b9d39cf40a93c7396a9 | |
| parent | c3ad8435e7bef96af35732bc0789e5a2278c6d5f [diff] |
Support compare functions with SortSlices and SortMaps (#367)
The SortSlices and SortMaps options predate generics and
accept an interface{}, so it is possible with reflection
to support other function signatures than "func(T, T) bool".
In particular, the Go ecosystem is increasingly moving towards
"func(T, T) int" as the signature for ordering as evidenced
by the newer slices.SortFunc function in stdlib.
Thus, modernize cmpopts by supporting "func(T, T) int".
Also, bump the minimum version to Go 1.21 to match
the minimum supported version of google.golang.org/protobuf.
Fixes #365
This package is intended to be a more powerful and safer alternative to reflect.DeepEqual for comparing whether two values are semantically equal.
The primary features of cmp are:
When the default behavior of equality does not suit the needs of the test, custom equality functions can override the equality operation. For example, an equality function may report floats as equal so long as they are within some tolerance of each other.
Types that have an Equal method may use that method to determine equality. This allows package authors to determine the equality operation for the types that they define.
If no custom equality functions are used and no Equal method is defined, equality is determined by recursively comparing the primitive kinds on both values, much like reflect.DeepEqual. Unlike reflect.DeepEqual, unexported fields are not compared by default; they result in panics unless suppressed by using an Ignore option (see cmpopts.IgnoreUnexported) or explicitly compared using the AllowUnexported option.
See the documentation for more information.
This is not an official Google product.
go get -u github.com/google/go-cmp/cmp
BSD - See LICENSE file