Contains returns true if substr is within s.

ContainsAny returns true if any Unicode code points in chars are within s.

ContainsRune returns true if the Unicode code point r is within s.

Count counts the number of non-overlapping instances of sep in s.

EqualFold reports whether s and t, interpreted as UTF-8 strings, are equal under Unicode case-folding.

Fields splits the string s around each instance of one or more consecutive white space characters, returning an array of substrings of s or an empty list if s contains only white space.

FieldsFunc splits the string s at each run of Unicode code points c satisfying f(c) and returns an array of slices of s.

HasPrefix tests whether the string s begins with prefix.

HasSuffix tests whether the string s ends with suffix.

Index returns the index of the first instance of sep in s, or -1 if sep is not present in s.

IndexAny returns the index of the first instance of any Unicode code point from chars in s, or -1 if no Unicode code point from chars is present in s.

IndexFunc returns the index into s of the first Unicode code point satisfying f(c), or -1 if none do.

IndexRune returns the index of the first instance of the Unicode code point r, or -1 if rune is not present in s.

Join concatenates the elements of a to create a single string.

LastIndex returns the index of the last instance of sep in s, or -1 if sep is not present in s.

LastIndexAny returns the index of the last instance of any Unicode code point from chars in s, or -1 if no Unicode code point from chars is present in s.

LastIndexFunc returns the index into s of the last Unicode code point satisfying f(c), or -1 if none do.

Map returns a copy of the string s with all its characters modified according to the mapping function.

NewReader returns a new Reader reading from s.

NewReplacer returns a new Replacer from a list of old, new string pairs.

Repeat returns a new string consisting of count copies of the string s.

Replace returns a copy of the string s with the first n non-overlapping instances of old replaced by new.

Split slices s into all substrings separated by sep and returns a slice of the substrings between those separators.

SplitAfter slices s into all substrings after each instance of sep and returns a slice of those substrings.

SplitAfterN slices s into substrings after each instance of sep and returns a slice of those substrings.

SplitN slices s into substrings separated by sep and returns a slice of the substrings between those separators.

Title returns a copy of the string s with all Unicode letters that begin words mapped to their title case.

ToLower returns a copy of the string s with all Unicode letters mapped to their lower case.

ToLowerSpecial returns a copy of the string s with all Unicode letters mapped to their lower case, giving priority to the special casing rules.

ToTitle returns a copy of the string s with all Unicode letters mapped to their title case.

ToTitleSpecial returns a copy of the string s with all Unicode letters mapped to their title case, giving priority to the special casing rules.

ToUpper returns a copy of the string s with all Unicode letters mapped to their upper case.

ToUpperSpecial returns a copy of the string s with all Unicode letters mapped to their upper case, giving priority to the special casing rules.

Trim returns a slice of the string s with all leading and trailing Unicode code points contained in cutset removed.

TrimFunc returns a slice of the string s with all leading and trailing Unicode code points c satisfying f(c) removed.

TrimLeft returns a slice of the string s with all leading Unicode code points contained in cutset removed.

TrimLeftFunc returns a slice of the string s with all leading Unicode code points c satisfying f(c) removed.

TrimRight returns a slice of the string s, with all trailing Unicode code points contained in cutset removed.

TrimRightFunc returns a slice of the string s with all trailing Unicode code points c satisfying f(c) removed.

TrimSpace returns a slice of the string s, with all leading and trailing white space removed, as defined by Unicode.

A Reader implements the io.Reader, io.ReaderAt, io.Seeker, io.WriterTo, io.ByteScanner, and io.RuneScanner interfaces by reading from a string.

A Replacer replaces a list of strings with replacements.