Golang string Formatting

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

Golang string Formatting

Package Mainimport "FMT" type point struct {x, y Int}func main () {//format integer, using '%d ' is a//standard way to output integer type in decimal//with a character Number decimal integer (int) (%LD,%ld: Long),%HD: Output short shape. ) FMT. Println ("=====%d, output decimal = =") fmt. Printf ("%d\n", "//output:110")//output integer binary representation of FMT. Println ("=====%b, output binary = = =") fmt. Printf ("%b\n", "//output:1101110")//output integer value corresponding to the character (char): one byte, 8 bits//can refer to ASCII FMT. Println ("=====%c, output a value character (char) = = =") fmt. Printf ("%c\n", "//output:a")//output a value of hexadecimal, each byte of the string output FMT with two characters. Println ("=====%x, output a value of hexadecimal, each string of bytes with two characters output = = =") fmt. Printf ("0x%x\n", "ten") fmt. Printf ("%x\n", "abc")//output:0xa//output:616263//Output floating-point value FMT. Println ("=====%f, output floating-point value = = =") fmt. Printf ("%f\n", 27.89)//output:27.890000//Output basic string FMT. Println ("=====%s, output basic string = = = =") fmt. Printf ("%s-%s-%s\n", "I", "AM", "Batu")//output:i-am-batu//outputs a string with double quotes FMT. Println ("=====%q, output string with double quotes = = =") fmt. Printf ("%q\n", "string")//output: "StrinG "//GO provides several print formats to format the general go value p: = Point{1, 2} fmt. Println ("=====%p, output a pointer value = = =") fmt. Printf ("%p\n", &p)//output:0xc042004390 FMT. Println ("=====%v, output struct object value = = =") fmt. Printf ("%v\n", p)//output: {1 2}//If the formatted value is a struct object, then the formatted output of '%+v ' is FMT. Println ("=====%+v, output struct member name and value = = =") fmt. Printf ("%+v\n", p)//output: {x:1 y:2} fmt. Println ("=====% #v, output a value of go syntax representation = = = =") fmt. Printf ("% #v \ n", p)//output:main.point{x:1, y:2} fmt. Println ("=====%t, output a value of data type = = = =") fmt.    Printf ("%t\n", p)//output:main.point//When outputting numbers, it is often necessary to control the width and accuracy of the output. You can use a number at the back of the% to control the width of the output, by default the output is right-aligned, and the left plus the space fmt. Println ("===== control output width and accuracy = = =") fmt.   Printf ("|%5d|%5d|\n", 345)//output: |  12|    345| Fmt. Println ("===== output width, specify floating point = = =") fmt. Printf ("|%5.2f|%5.2f|\n", 1.2, 3.456)//output: | 1.20|    3.46| Fmt. Println ("===== Left aligned = = = = =") fmt. Printf ("|%-5.2f|%-5.2f|\n", 1.2, 3.45)//output: |1.20 |3.45 |}