Golang string formatting
Go for string formatting provides a good support. Let us look at some examples of commonly formatted string.
main Package
Import (
"FMT"
"OS"
)
type struct Point {
X, Y int
}
FUNC main () {
// Go provides several print format for the general format Go value, e.g.
// following% v printed value of the object structure a point
P: = {point. 1, 2}
fmt.Printf ( "% v \ n-", P)
// if the value is a formatted structure object, `% + v` formatted output
// will include member names and values structure
fmt.Printf ( "V +% \ n-", P)
@ #% `v` formatted output the output value indicates a syntax Go the way.
fmt.Printf ( "# V% \ n-", P)
// output using `% T` a data type value
fmt.Printf ("% T \ n-", P)
// Format Boolean variable
fmt. printf ( "% t \ n" ,
// In this manner the output binary integer representation
fmt.Printf ( "% B \ n-", 14)
// Print out the integer value where the corresponding character
fmt.Printf ( "% c \ n" , 33 )
// output using `% x` a value of hexadecimal representation
fmt.Printf ("% X \ n-", 456)
// float value format there are several methods. The most basic one is F`% `
fmt.Printf (" F% \ n-", 78.9)
// properties E 'and`% `% E` Use scientific notation to output integer
fmt.Printf ("% e \ n-", 123,400,000.0)
fmt.Printf ("% E \ n-", 123,400,000.0)
// output using`% s` basic string
fmt.Printf ( "% S \ n-", "\" string \ "")
/ character string / image output Go source as in double quotes, use OJ% `
fmt.Printf ("% Q \ n-"," \ "string \" ")
// hexadecimal` x`% output string, each string with a two byte character output
fmt.Printf ( "% x \ n" , "hex this"
// When the output of the digital time, often need to control the width and the accuracy of the output.
// width may be used a number located behind% to control the output of the default
case // the output is right-justified, plus space left
fmt.Printf ( "|% 6d |% 6d | \ n", 12, 345 )
// you can also specify the output width of the float, and you can also specify a float
// output accuracy
fmt.Printf ( "|% 6.2f |% 6.2f | \ n-", 1.2, 3.45)
// the to the justify-left, `-` the use in Flag.
fmt.Printf (" |% -6.2f |% -6.2f | \ n-", 1.2, 3.45)
// you can specify the output width of the string to ensure that the output thereof alignment. Default
under //, the output is right-justified
fmt.Printf ( "|% 6S |% 6S | \ the n-", "foo", "b")
// To use the left-aligned before you can add width `- `No.
fmt.Printf (" |% -6S |% -6S | \ the n-"," foo "," b ")
//` Printf` output function is output to the command line `os.Stdout` you
/ / `Sprintf` may be formatted string to the assignment to a variable
s: = fmt.
// you can also use the output value to `Fprintf` formatted to io.Writers``
fmt.Fprintf (os.Stderr, "AN% S \ n-", "error")
}
{1 2}
{x:1 y:2}
main.point{x:1, y:2}
main.point
true
123
1110
!
1c8
78.900000
1.234000e+08
1.234000E+08
"string"
"\"string\""
6865782074686973
0xc042052070
| 12| 345|
| 1.20| 3.45|
|1.20 |3.45 |
| foo| b|
|foo |b |
a string
an error
Go for string formatting provides a good support. Let us look at some examples of commonly formatted string.
main Package
Import (
"FMT"
"OS"
)
type struct Point {
X, Y int
}
FUNC main () {
// Go provides several print format for the general format Go value, e.g.
// following% v printed value of the object structure a point
P: = {point. 1, 2}
fmt.Printf ( "% v \ n-", P)
// if the value is a formatted structure object, `% + v` formatted output
// will include member names and values structure
fmt.Printf ( "V +% \ n-", P)
@ #% `v` formatted output the output value indicates a syntax Go the way.
fmt.Printf ( "# V% \ n-", P)
// output using `% T` a data type value
fmt.Printf ("% T \ n-", P)
// Format Boolean variable
fmt. printf ( "% t \ n" ,
// In this manner the output binary integer representation
fmt.Printf ( "% B \ n-", 14)
// Print out the integer value where the corresponding character
fmt.Printf ( "% c \ n" , 33 )
// output using `% x` a value of hexadecimal representation
fmt.Printf ("% X \ n-", 456)
// float value format there are several methods. The most basic one is F`% `
fmt.Printf (" F% \ n-", 78.9)
// properties E 'and`% `% E` Use scientific notation to output integer
fmt.Printf ("% e \ n-", 123,400,000.0)
fmt.Printf ("% E \ n-", 123,400,000.0)
// output using`% s` basic string
fmt.Printf ( "% S \ n-", "\" string \ "")
/ character string / image output Go source as in double quotes, use OJ% `
fmt.Printf ("% Q \ n-"," \ "string \" ")
// hexadecimal` x`% output string, each string with a two byte character output
fmt.Printf ( "% x \ n" , "hex this"
// When the output of the digital time, often need to control the width and the accuracy of the output.
// width may be used a number located behind% to control the output of the default
case // the output is right-justified, plus space left
fmt.Printf ( "|% 6d |% 6d | \ n", 12, 345 )
// you can also specify the output width of the float, and you can also specify a float
// output accuracy
fmt.Printf ( "|% 6.2f |% 6.2f | \ n-", 1.2, 3.45)
// the to the justify-left, `-` the use in Flag.
fmt.Printf (" |% -6.2f |% -6.2f | \ n-", 1.2, 3.45)
// you can specify the output width of the string to ensure that the output thereof alignment. Default
under //, the output is right-justified
fmt.Printf ( "|% 6S |% 6S | \ the n-", "foo", "b")
// To use the left-aligned before you can add width `- `No.
fmt.Printf (" |% -6S |% -6S | \ the n-"," foo "," b ")
//` Printf` output function is output to the command line `os.Stdout` you
/ / `Sprintf` may be formatted string to the assignment to a variable
s: = fmt.
// you can also use the output value to `Fprintf` formatted to io.Writers``
fmt.Fprintf (os.Stderr, "AN% S \ n-", "error")
}
{1 2}
{x:1 y:2}
main.point{x:1, y:2}
main.point
true
123
1110
!
1c8
78.900000
1.234000e+08
1.234000E+08
"string"
"\"string\""
6865782074686973
0xc042052070
| 12| 345|
| 1.20| 3.45|
|1.20 |3.45 |
| foo| b|
|foo |b |
a string
an error