• jmh530 (10/10) Aug 20 2017 I'm playing around with std.format and I'm trying to figure out
• Steven Schveighoffer (7/19) Aug 21 2017 Well, for most things, %s does not do the same thing as another
• jmh530 (5/12) Aug 21 2017 I'm pretty sure that isFloatingPoint/isIntegral is not what I
• Steven Schveighoffer (6/19) Aug 21 2017 What I mean is that %s goes to %d for isIntegral!(typeof(x)), and %s
• jmh530 (4/10) Aug 22 2017 I realized I was more interested in the length of the result than

jmh530 <john.michael.hall gmail.com> writes:

I'm playing around with std.format and I'm trying to figure out 
if there is any way to identify what "%s" should expand to.

So for instance:
int x = 1;
auto result = x.format!"%s";

I would know that result="1". I could run "1" through 
unformatValue and get back 1. I'm looking to see if there is a 
way to get back "%d": really a function would be like f(x, "%s") 
produces "%d".

Is there anything like that in std.format?

Steven Schveighoffer <schveiguy yahoo.com> writes:

On 8/20/17 9:52 PM, jmh530 wrote:
 I'm playing around with std.format and I'm trying to figure out if there 
 is any way to identify what "%s" should expand to.
 
 So for instance:
 int x = 1;
 auto result = x.format!"%s";
 
 I would know that result="1". I could run "1" through unformatValue and 
 get back 1. I'm looking to see if there is a way to get back "%d": 
 really a function would be like f(x, "%s") produces "%d".
 
 Is there anything like that in std.format?

Well, for most things, %s does not do the same thing as another 
specifier. It's only integers, which format the same as %d, and floating 
points, which format the same as %g.

For all others, the format is specified as %s.

I think what you really want is just isFloatingPoint or isIntegral.

-Steve

jmh530 <john.michael.hall gmail.com> writes:

On Monday, 21 August 2017 at 13:57:01 UTC, Steven Schveighoffer 
wrote:
 Well, for most things, %s does not do the same thing as another 
 specifier. It's only integers, which format the same as %d, and 
 floating points, which format the same as %g.

 For all others, the format is specified as %s.

 I think what you really want is just isFloatingPoint or 
 isIntegral.

 -Steve

I'm pretty sure that isFloatingPoint/isIntegral is not what I 
need, but I'm also not sure if what I was asking for above is 
needed either. So I'll just drop it for now.

Steven Schveighoffer <schveiguy yahoo.com> writes:

On 8/21/17 10:58 AM, jmh530 wrote:
 On Monday, 21 August 2017 at 13:57:01 UTC, Steven Schveighoffer wrote:
 Well, for most things, %s does not do the same thing as another 
 specifier. It's only integers, which format the same as %d, and 
 floating points, which format the same as %g.

 For all others, the format is specified as %s.

 I think what you really want is just isFloatingPoint or isIntegral.

 
 I'm pretty sure that isFloatingPoint/isIntegral is not what I need, but 
 I'm also not sure if what I was asking for above is needed either. So 
 I'll just drop it for now.

What I mean is that %s goes to %d for isIntegral!(typeof(x)), and %s 
goes to %g for isFloatingPoint!(typeof(x)), and stays as %s for 
everything else.

Given this, you could probably write the function you were looking for.

-Steve

jmh530 <john.michael.hall gmail.com> writes:

On Monday, 21 August 2017 at 15:39:04 UTC, Steven Schveighoffer 
wrote:
 What I mean is that %s goes to %d for isIntegral!(typeof(x)), 
 and %s goes to %g for isFloatingPoint!(typeof(x)), and stays as 
 %s for everything else.

 Given this, you could probably write the function you were 
 looking for.

 -Steve

I realized I was more interested in the length of the result than 
the type.