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# Deep Variable Equality for Humans
[](https://goreportcard.com/report/github.com/go-test/deep) [](https://travis-ci.org/go-test/deep) [](https://coveralls.io/github/go-test/deep?branch=master) [](https://godoc.org/github.com/go-test/deep)
This package provides a single function: `deep.Equal`. It's like [reflect.DeepEqual](http://golang.org/pkg/reflect/#DeepEqual) but much friendlier to humans (or any sentient being) for two reason:
* `deep.Equal` returns a list of differences
* `deep.Equal` does not compare unexported fields (by default)
`reflect.DeepEqual` is good (like all things Golang!), but it's a game of [Hunt the Wumpus](https://en.wikipedia.org/wiki/Hunt_the_Wumpus). For large maps, slices, and structs, finding the difference is difficult.
`deep.Equal` doesn't play games with you, it lists the differences:
```go
package main_test
import (
"testing"
"github.com/go-test/deep"
)
type T struct {
Name string
Numbers []float64
}
func TestDeepEqual(t *testing.T) {
// Can you spot the difference?
t1 := T{
Name: "Isabella",
Numbers: []float64{1.13459, 2.29343, 3.010100010},
}
t2 := T{
Name: "Isabella",
Numbers: []float64{1.13459, 2.29843, 3.010100010},
}
if diff := deep.Equal(t1, t2); diff != nil {
t.Error(diff)
}
}
```
```
$ go test
--- FAIL: TestDeepEqual (0.00s)
main_test.go:25: [Numbers.slice[1]: 2.29343 != 2.29843]
```
The difference is in `Numbers.slice[1]`: the two values aren't equal using Go `==`.
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