util

package

v0.1.3 Latest Latest Go to latest Published: May 2, 2024 License: MIT Imports: 4 Imported by: 0

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Package util provides various things used by other packages in this module.

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func ByteLowercase(str string) string

ByteLowercase returns a byte-lowercase version of str.

func Errorf(format string, a ...any) error

Errorf is similar to fmt.Errorf, but the message of the resulting error is prefixed with "cors: ".

func InvalidOriginPatternErr(str string) error

InvalidOriginPatternErr returns an error about invalid origin pattern str.

func Join(w io.StringWriter, strs []string)

Join joins the elements of strs in a human-friendly way and writes the result to w.

func NewError(text string) error

NewError is similar to errors.New, but the message of the resulting error is prefixed with "cors: ".

type Set[E int | string] map[E]struct{}

A Set represents a mathematical set of ints or strings.

func NewSet[E int | string](first E, rest ...E) Set[E]

NewSet returns a Set that contains first and all elements of rest, but no other elements.

func (s Set[E]) Add(e E)

Add adds e to s.

func (s Set[E]) Contains(e E) bool

Contains returns true if e is an element of s, and false otherwise.