Go slices and string

main Package 

Import ( 
	"FMT" 
) 

FUNC main () { 

	// string underlayer is a byte array, thus slicing processing may be performed string 
	str: = "hello @ atguigu" //: = type inference 
	// microtome acquired atguigu 
	Slice: STR = [. 6:] 
	fmt.Println ( "Slice =", Slice) 

	// string is immutable, it can not be said str [0] = 'z' way to modify the string 
	// str [0 ] = 'z' [compiled by not being given, because the string is an immutable] 

	// To change the string, first string -> [] byte / or [] Rune -> modify -> rewrite turn into String 
	// "Hello @ atguigu" => change "zello @ atguigu" 
	of arr1: = [] byte (STR) 
	of arr1 [0] = 'Z' 
	STR = String (of arr1) 
	fmt.Println ( "STR =",str) 

	// details, we turn to [] after byte, can handle English and numbers, but can not handle Chinese 
	// The reason is [] byte byte to deal with, but a Chinese character is three bytes, so there will be garbled
	// The solution is transformed into the string [] Rune to as [] Rune is processed by character, kanji compatible  
	arr2: = [] rune (str )
	arr2 [0] = 'North' 
	str2 = string (arr2 is) 
	fmt.Println ( "STR =", str2 ) 
}