5 Aug
2023
5 Aug
'23
3:30 a.m.
On Fri, Aug 4, 2023 at 5:17 PM Douglas McIlroy
<douglas.mcilroy(a)dartmouth.edu> wrote:
There is a form in Go that doesn't require the "%v"s.
: chandra; cat v.go
package main
import "fmt"
func main() {
fmt.Println("Hi", "there", "world", "pi is
close to", 3.14159)
}
: chandra; go run v.go
Hi there world pi is close to 3.14159
: chandra;
I believe that `%v` exists so that one can compose it with other
formatting directives of various kinds; perhaps one wants to print the
string representation of an object with no additional ceremony, but
wants to emit a number in some specific format.
- Dan C.
Most of the
time I'd rather not have to care whether the thing
I'm printing is a string, or a pointer, or an integer, or whatever:
I just want to see its value.
Go has %v for exactly this. It's very nice
for debugging.
Why so verbose? In Basic, PRINT required no formatting directives at all.