Golang--string operation

string to int
int, err: = StrConv. Atoi (String) string to Int64
Int64, err: = String. parseint (String, ten, max) int to string
String: = StrConv. Itoa (int) Int64 to string
String: = StrConv. Formatint (Int64, Hasprefix) determines whether the string s starts with prefix
Strings. Hasprefix (s, prefix string) bool Hassuffix determines whether the string s ends at suffix
Strings. Hassuffix (s, suffix string) bool contains determines whether the string s contains substr
Strings. Contains (S, substr string) bool Index returns the index of the string str in the string s (index of the first character of str), 1 indicates that the string s does not contain a string str
Strings. Index (S, str string) int lastindex Returns the position of the last occurrence of the string str in the string s
Strings. LastIndex (S, str string) int non-ASCII encoded character positioning
Strings. Indexrune (s string, ch int) Replace replaces the first n strings in str with the string new, and if 1 replaces all strings old as new
Strings. Replace (str, old, new, N) string count is used to calculate the number of non-overlapping occurrences of STR in S
Strings. Count (S, str string) int repeat is used to repeat count string s and return a new string
Strings. Repeat (s, Count int) string ToLower converts all Unicode characters in a string to lowercase letters
Strings. ToLower (s) string ToUpper converts all Unicode characters in a string to uppercase letters
Strings. ToUpper (s) string trimspace culling whitespace at the beginning and end of a string trim culling the beginning and end of a string trimleft,trimright culling the beginning or ending string Fields use one or more whitespace symbols to split a string as a delimiter of dynamic length, returning slice
Strings. Fields (s) slice split split the specified string with a custom split symbol
Strings. Split (s, Sep) Slice join is used to stitch a string into a slice using a split symbol for element type string
Strings. Join (SL []string, Sep string)