Update/fix examples

README.md

@@ -14,10 +14,10 @@ import (
 	"github.com/spenserblack/go-defaultmap"
 )
 
-m := defaultmap.NewMap(func() string { return "I'm the default!" })
+m := defaultmap.NewMap[string](func() string { return "I'm the default!" })
 m.Insert("exists", "Hello, World!")
 
 fmt.Println(m.Get("exists")) // Hello, World!
 fmt.Println(m.Get("doesn't exist")) // I'm the default!
-fmt.Println(m.GetOr("I'm a one-time default!")) // I'm a one-time default!
+fmt.Println(m.GetOr("also doesn't exist", "I'm a one-time default!")) // I'm a one-time default!
 ```

example_test.go

@@ -0,0 +1,61 @@
+package defaultmap_test
+
+import (
+	"fmt"
+
+	"github.com/spenserblack/go-defaultmap"
+)
+
+func ExampleMap() {
+	m := defaultmap.NewMap[string](func() string { return "I'm the default!" })
+	m.Insert("exists", "Hello, World!")
+
+	fmt.Println(m.Get("exists"))
+	fmt.Println(m.Get("doesn't exist"))
+	fmt.Println(m.GetOr("also doesn't exist", "I'm a one-time default!"))
+	// Output:
+	// Hello, World!
+	// I'm the default!
+	// I'm a one-time default!
+}
+
+func ExampleMap_Get() {
+	m := defaultmap.NewMap[string](func() string { return "I'm the default!" })
+	m.Insert("exists", "Hello, World!")
+
+	fmt.Println(m.Get("exists"))
+	fmt.Println(m.Contains("doesn't exist"))
+	fmt.Println(m.Get("doesn't exist"))
+	fmt.Println(m.Contains("doesn't exist"))
+	// Output:
+	// Hello, World!
+	// false
+	// I'm the default!
+	// true
+}
+
+func ExampleMap_GetOr() {
+	m := defaultmap.NewMap[string](func() string { return "I'm the default!" })
+	m.Insert("exists", "Hello, World!")
+
+	fmt.Println(m.GetOr("exists", "other default"))
+	fmt.Println(m.Contains("doesn't exist"))
+	fmt.Println(m.GetOr("doesn't exist", "other default"))
+	fmt.Println(m.Contains("doesn't exist"))
+	// Output:
+	// Hello, World!
+	// false
+	// other default
+	// false
+}
+
+func ExampleMap_Contains() {
+	m := defaultmap.NewMap[string](func() string { return "I'm the default!" })
+	m.Insert("exists", "Hello, World!")
+
+	fmt.Println(m.Contains("exists"))
+	fmt.Println(m.Contains("doesn't exist"))
+	// Output:
+	// true
+	// false
+}