Add generic Map implementation (#108) Instead of waiting for a good time to switch the `Map` implementation, I've decided to just offer two implementations: one for Go versions before 1.18, and one for 1.18 and onwards. This is achieved using build tags in the source files. This is obviously a breaking change for consumers of this library that use Go 1.18 and onwards. See #88
1 file changed, 34 insertions(+), 0 deletions(-)
changed files
A gomponents_generic_test.go
@@ -0,0 +1,34 @@ +//go:build go1.18 +// +build go1.18 + +package gomponents_test + +import ( + "os" + "testing" + + g "github.com/maragudk/gomponents" + "github.com/maragudk/gomponents/internal/assert" +) + +func TestMap(t *testing.T) { + t.Run("maps slices to nodes", func(t *testing.T) { + items := []string{"hat", "partyhat", "turtlehat"} + lis := g.Map(items, func(i string) g.Node { + return g.El("li", g.Text(i)) + }) + + list := g.El("ul", lis...) + + assert.Equal(t, `<ul><li>hat</li><li>partyhat</li><li>turtlehat</li></ul>`, list) + }) +} + +func ExampleMap() { + items := []string{"party hat", "super hat"} + e := g.El("ul", g.Group(g.Map(items, func(i string) g.Node { + return g.El("li", g.Text(i)) + }))) + _ = e.Render(os.Stdout) + // Output: <ul><li>party hat</li><li>super hat</li></ul> +}