O'Reilly logo

The Go Programming Language by Brian W. Kernighan, Alan A. A. Donovan

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

13.3 Example: Deep Equivalence

The DeepEqual function from the reflect package reports whether two values are “deeply” equal. DeepEqual compares basic values as if by the built-in == operator; for composite values, it traverses them recursively, comparing corresponding elements. Because it works for any pair of values, even ones that are not comparable with ==, it finds widespread use in tests. The following test uses DeepEqual to compare two []string values:

func TestSplit(t *testing.T) {
    got := strings.Split("a:b:c", ":")
    want := []string{"a", "b", "c"};
    if !reflect.DeepEqual(got, want) { /* ... */ }
}

Although DeepEqual is convenient, its distinctions can seem arbitrary. For example, it doesn’t consider a ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required