exstrings

Documentation

Index

• func CollapseSpaces(s string) string
• func ConstantTimeEqual(a, b string) bool
• func ContainsFold(s, substr string) bool
• func HasPrefixFold(s, prefix string) bool
• func HasSuffixFold(s, suffix string) bool
• func IndexFold(s, substr string) int
• func LongestCommonPrefix(in []string) string
• func LongestSequenceOf(a string, b rune) int
• func LongestSequenceOfFunc(a string, fn func(b rune) int) int
• func PrefixByteRunLength(s string, b byte) int
• func SHA256(str string) [32]byte
• func UnsafeBytes(str string) []byte

Functions

func CollapseSpaces

func CollapseSpaces(s string) string

CollapseSpaces replaces all runs of multiple spaces (\x20) in a string with a single space.

func ConstantTimeEqual

func ConstantTimeEqual(a, b string) bool

ConstantTimeEqual compares two strings using subtle.ConstantTimeCompare without copying the strings.

Note that ConstantTimeCompare is not constant time if the strings are of different length.

func ContainsFold

func ContainsFold(s, substr string) bool

func HasPrefixFold

func HasPrefixFold(s, prefix string) bool

func HasSuffixFold

func HasSuffixFold(s, suffix string) bool

func IndexFold

func IndexFold(s, substr string) int

func LongestCommonPrefix

func LongestCommonPrefix(in []string) string

func LongestSequenceOf

func LongestSequenceOf(a string, b rune) int

LongestSequenceOf returns the length of the longest contiguous sequence of a single rune in a string.

func LongestSequenceOfFunc

func LongestSequenceOfFunc(a string, fn func(b rune) int) int

LongestSequenceOfFunc returns the length of the longest contiguous sequence of runes in a string.

If the provided function returns zero or higher, the return value is added to the current count. If the return value is negative, the count is reset to zero.

func PrefixByteRunLength

func PrefixByteRunLength(s string, b byte) int

PrefixByteRunLength returns the number of the given byte at the start of a string.

func SHA256

func SHA256(str string) [32]byte

SHA256 returns the SHA-256 hash of the input string without copying the string.

func UnsafeBytes

func UnsafeBytes(str string) []byte

UnsafeBytes returns a byte slice that points to the same memory as the input string.

The returned byte slice must not be modified.

See go.mau.fi/util/exbytes.UnsafeString for the reverse operation.