Golang--string manipulation

This is a creation in Article, where the information may have evolved or changed.

Related packages are strings, StrConv

• Determine whether to begin/end with a string
  Strings. Hasprefix (s string, prefix string) bool = Str.startswith corresponding to Python
  Strings. Hassuffix (s string, suffix string) bool = Str.endswith corresponding to Python

• String segmentation
  Strings. Split (S string, Sep string) []string = Str.split for Python

• Returns the substring index
  Strings. Index (S string, sub string) int = = corresponds to Python's str.index
  Strings. LastIndex Last matching Index

• String connection
  Strings. Join (A []string, Sep string) string = = corresponds to Python's str.join

• String substitution
  Strings. Replace (S, old, new string, n int) string = = corresponds to Python's str.replace
  

• Convert to uppercase/lowercase
  Strings. ToUpper (s string) string
  Strings. ToLower
  Corresponding to Python's str.upper,str.lower

• Number of sub-strings

  Strings. Count (S string, sep string) int

  Corresponding to Python's Str.count

• Partition
  Python's str.partition is useful when parsing packages, encapsulating a
  

  func partition (s string, sep  String)   (head string, retsep string, tail string)  {      partition (S, SEP)  ->  (Head, sep, tail)     index : = strings. Index (S, SEP)     if index == -1 {         head = s        retSep =  ""         tail =  ""     } else {         head = s[:index]         retsep = sep        tail = s[len (head) +len (Sep):]    }    return} 

Partition use

Package format header (XY) + Data body + tail (... XY ...) ... _, header, msg: = Partition (data, "XY") if Header = = "" {//No header (XY) drops. (It is also possible that the sticky packet sub-package causes "... x", the last (note is a) character becomes x, when the front packet is discarded, only one x is left)} else {//do}