Documentation ¶
Index ¶
- func Fprint(w io.Writer, a ...interface{}) (n int, err error)
- func Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error)
- func Fprintln(w io.Writer, a ...interface{}) (n int, err error)
- func Print(a ...interface{}) (n int, err error)
- func Printf(format string, a ...interface{}) (n int, err error)
- func Println(a ...interface{}) (n int, err error)
- func Sprint(a ...interface{}) string
- func Sprintf(format string, a ...interface{}) string
- func Sprintln(a ...interface{}) string
- type Formatter
- type GoStringer
- type State
- type Stringer
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func Fprint ¶
Fprint formats using the default formats for its operands and writes to w. Spaces are added between operands when neither is a string. It returns the number of bytes written and any write error encountered.
func Fprintf ¶
Fprintf formats according to a format specifier and writes to w. It returns the number of bytes written and any write error encountered.
func Fprintln ¶
Fprintln formats using the default formats for its operands and writes to w. Spaces are always added between operands and a newline is appended. It returns the number of bytes written and any write error encountered.
func Print ¶
Print formats using the default formats for its operands and writes to standard output. Spaces are added between operands when neither is a string. It returns the number of bytes written and any write error encountered.
func Printf ¶
Printf formats according to a format specifier and writes to standard output. It returns the number of bytes written and any write error encountered.
func Println ¶
Println formats using the default formats for its operands and writes to standard output. Spaces are always added between operands and a newline is appended. It returns the number of bytes written and any write error encountered.
func Sprint ¶
func Sprint(a ...interface{}) string
Sprint formats using the default formats for its operands and returns the resulting string. Spaces are added between operands when neither is a string.
Types ¶
type Formatter ¶
Formatter is implemented by any value that has a Format method. The implementation controls how State and rune are interpreted, and may call Sprint(f) or Fprint(f) etc. to generate its output.
type GoStringer ¶
type GoStringer interface {
GoString() string
}
GoStringer is implemented by any value that has a GoString method, which defines the Go syntax for that value. The GoString method is used to print values passed as an operand to a %#v format.
type State ¶
type State interface { // Write is the function to call to emit formatted output to be printed. Write(b []byte) (n int, err error) // Width returns the value of the width option and whether it has been set. Width() (wid int, ok bool) // Precision returns the value of the precision option and whether it has been set. Precision() (prec int, ok bool) // Flag reports whether the flag c, a character, has been set. Flag(c int) bool }
State represents the printer state passed to custom formatters. It provides access to the io.Writer interface plus information about the flags and options for the operand's format specifier.
type Stringer ¶
type Stringer interface {
String() string
}
Stringer is implemented by any value that has a String method, which defines the “native” format for that value. The String method is used to print values passed as an operand to any format that accepts a string or to an unformatted printer such as Print.