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package opt_test

import (
	"fmt"

	"go.jolheiser.com/opt"
)

func ExampleApply() {
	f := Foo{
		Bar: "default",
	}
	opt.Apply(&f, WithBar("override"))

	fmt.Println(f.Bar)
	// Output:
	// override
}

func ExampleApplyError() {
	f := &Foo{
		Bar: "default",
	}
	err := opt.ApplyError(f, WithBarErr("uh oh!")) // WithBarErr always returns errors.New(b)
	if err != nil {
		fmt.Println(err)
	}
	// Output:
	// uh oh!
}