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package main

import (
	"net/url"
	"strings"
)

type stringSet struct {
	values map[string]bool
}

func NewStringSet(values ...string) *stringSet {
	s := &stringSet{
		values: make(map[string]bool, len(values)),
	}

	for _, v := range values {
		s.Add(v)
	}

	return s
}

func (s *stringSet) Add(v string) {
	s.values[v] = true
}

func (s *stringSet) Contains(k string) bool {
	_, ok := s.values[k]
	return ok
}

func URLMustParse(u string) *url.URL {
	o, err := url.Parse(u)
	if err != nil {
		panic(err)
	}
	return o
}

func CompareUpper(lhs, rhs string) bool {
	return strings.ToUpper(lhs) == strings.ToUpper(rhs)
}