Go Printing to Stdout and Stderr: Difference between revisions
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=<tt>fmt.Printf()</tt>= | =<tt>fmt.Printf()</tt>= | ||
{{External|https://golang.org/pkg/fmt/#Printf fmt.Printf()}} | |||
<syntaxhighlight lang='go'> | <syntaxhighlight lang='go'> | ||
import "fmt" | import "fmt" | ||
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Prints according to a format specifier. Format specifier documentation https://golang.org/pkg/fmt | Prints according to a format specifier. Format specifier documentation https://golang.org/pkg/fmt |
Revision as of 00:51, 19 August 2023
Internal
Bootstrapping Functions
Both print()
and println()
are pre-declared functions, ready to use without any import.
print()
println()
func main() {
println("something")
}
fmt.Printf()
- https://golang.org/pkg/fmt/#Printf fmt.Printf()
import "fmt"
// ...
fmt.Printf("something")
Format Strings
The format strings contain conversion characters (ex. %s
):
fmt.Printf("Hello %s", "Bob")
Prints according to a format specifier. Format specifier documentation https://golang.org/pkg/fmt
Pointers
fmt.Printf("%p\n", sPtr)
"%p" prepend the "0x" prefix.
Pointers can be also represented using "%X" (base 16, upper case characters).
Ints
fmt.Printf("%d\n",i)
Characters
fmt.Printf("%c\n",i)
Boolean Values
fmt.Printf("%t\n",b)