From: Dan Cross <crossd@gmail.com>
To: Douglas McIlroy <douglas.mcilroy@dartmouth.edu>
Cc: TUHS main list <tuhs@tuhs.org>
Subject: [TUHS] Re: python
Date: Fri, 4 Aug 2023 17:30:21 -0400 [thread overview]
Message-ID: <CAEoi9W5EigUVLm-pTY=Ug8VL_QY3aazB3unQZxmqmzGcyETPtQ@mail.gmail.com> (raw)
In-Reply-To: <CAKH6PiXY29wS-_9r+w7_6xvRVbzOL4RZ=kNVYv2CFLRmY7E6Ow@mail.gmail.com>
On Fri, Aug 4, 2023 at 5:17 PM Douglas McIlroy
<douglas.mcilroy@dartmouth.edu> wrote:
> > 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.
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.
next prev parent reply other threads:[~2023-08-04 21:31 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-04 21:17 Douglas McIlroy
2023-08-04 21:30 ` Dan Cross [this message]
2023-08-04 22:36 ` Rob Pike
-- strict thread matches above, loose matches on Subject: below --
2023-08-06 19:46 Norman Wilson
2023-08-07 6:48 ` Ed Bradford
2023-08-04 20:11 Noel Chiappa
2023-08-04 20:15 ` Larry McVoy
2023-08-04 20:45 ` Adam Thornton
2023-07-30 23:59 [TUHS] Re: Cool talk on Unix and Sendmail history, by Eric Allman Erik E. Fair
2023-08-01 10:58 ` Erik E. Fair
2023-08-02 0:37 ` Dave Horsfall
2023-08-02 14:52 ` Ron Natalie
2023-08-02 21:14 ` Grant Taylor via TUHS
2023-08-02 22:20 ` segaloco via TUHS
2023-08-02 23:49 ` Rich Salz
2023-08-03 0:51 ` [TUHS] Re: python Larry McVoy
2023-08-03 1:20 ` George Michaelson
2023-08-03 2:53 ` Bakul Shah
2023-08-03 2:55 ` segaloco via TUHS
2023-08-03 3:24 ` George Michaelson
2023-08-03 3:32 ` Warner Losh
2023-08-03 3:55 ` Bakul Shah
2023-08-03 8:32 ` Rob Pike
2023-08-03 14:19 ` Bakul Shah
2023-08-03 14:56 ` Dan Halbert
2023-08-03 15:20 ` will.senn
2023-08-03 22:05 ` Dan Cross
2023-08-04 0:24 ` John Cowan
2023-08-04 15:17 ` Dan Cross
2023-08-05 4:44 ` Bakul Shah
2023-08-03 15:41 ` John Cowan
2023-08-03 2:07 ` Clem Cole
2023-08-03 2:21 ` Pete Wright via TUHS
2023-08-03 2:56 ` Warner Losh
2023-08-03 12:36 ` Mike Markowski
2023-08-03 13:29 ` Rob Pike
2023-08-03 15:24 ` emanuel stiebler
2023-08-03 15:39 ` Steffen Nurpmeso
2023-08-04 1:01 ` Larry McVoy
2023-08-04 1:28 ` segaloco via TUHS
2023-08-04 1:58 ` Adam Thornton
2023-08-04 15:04 ` Dan Cross
2023-08-04 15:10 ` Larry McVoy
2023-08-04 19:20 ` Ed Bradford
2023-08-04 19:47 ` Larry McVoy
2023-08-05 5:40 ` Ed Bradford
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