• spir (21/21) Feb 11 2011 Hello,
• Jesse Phillips (2/7) Feb 11 2011 Maybe to!string(Enum.i) should return the enum name with it's field. Thi...
• spir (7/14) Feb 11 2011 That's what I wrote, precisely (see example in OP), and it returns only ...
• Jesse Phillips (2/14) Feb 11 2011 It look like you were asking how you could do it, not that to!string sho...
• bearophile (10/13) Feb 11 2011 Is this good enough?
• spir (16/27) Feb 11 2011 More generally, I think default %s and to!string should systematically o...

spir <denis.spir gmail.com> writes:

Hello,

To denote a member 'm' of an enum 'e', one needs to write "e.m". Is there a way 
to get back this "name"?
Here are my best trials:

unittest {
     enum TC : uint {i=1};
     writefln("%s   %s   %s", TC.i, TC.i.stringof, to!string(TC.i));
}
==>
1   cast(TC)1u   i

A bit strange that '%s' does not produce the same string as to!string... 
Anyway, the only solution seems to be parsing the result of stringof to get 
what's inside (), then compose it with the result of to!string: a bit too much 
of a burden, what do you think?
Hints welcome :-)

Thank you for reading,
Denis
-- 
_________________
vita es estrany
spir.wikidot.com

Jesse Phillips <jessekphillips+D gmail.com> writes:

spir Wrote:

 Hello,
 
 To denote a member 'm' of an enum 'e', one needs to write "e.m". Is there a
way 
 to get back this "name"?
 Here are my best trials:

Maybe to!string(Enum.i) should return the enum name with it's field. This makes
since because it is trying to return its name, and for named enums, where it
comes from is important.

spir <denis.spir gmail.com> writes:

On 02/11/2011 06:49 PM, Jesse Phillips wrote:
 spir Wrote:

 Hello,

 To denote a member 'm' of an enum 'e', one needs to write "e.m". Is there a way
 to get back this "name"?
 Here are my best trials:

 Maybe to!string(Enum.i) should return the enum name with it's field. This
makes since because it is trying to return its name, and for named enums, where
it comes from is important.

That's what I wrote, precisely (see example in OP), and it returns only "i".

denis
-- 
_________________
vita es estrany
spir.wikidot.com

Jesse Phillips <jessekphillips+D gmail.com> writes:

spir Wrote:

 On 02/11/2011 06:49 PM, Jesse Phillips wrote:
 spir Wrote:

 Hello,

 To denote a member 'm' of an enum 'e', one needs to write "e.m". Is there a way
 to get back this "name"?
 Here are my best trials:

 Maybe to!string(Enum.i) should return the enum name with it's field. This
makes since because it is trying to return its name, and for named enums, where
it comes from is important.

 
 That's what I wrote, precisely (see example in OP), and it returns only "i".

It look like you were asking how you could do it, not that to!string should do
it for you. My thought is added it to bugzilla.

bearophile <bearophileHUGS lycos.com> writes:

spir:

 To denote a member 'm' of an enum 'e', one needs to write "e.m". Is there a
way 
 to get back this "name"?

Is this good enough?

import std.stdio, std.conv;
enum TC { A, B, C }
void main() {
    writeln(typeof(TC.A).stringof, ".", to!string(TC.A));
}


 A bit strange that '%s' does not produce the same string as to!string...

I agree, I have a bug report on this.

Bye,
bearophile

spir <denis.spir gmail.com> writes:

On 02/11/2011 07:39 PM, bearophile wrote:
 spir:

 To denote a member 'm' of an enum 'e', one needs to write "e.m". Is there a way
 to get back this "name"?

 Is this good enough?

 import std.stdio, std.conv;
 enum TC { A, B, C }
 void main() {
      writeln(typeof(TC.A).stringof, ".", to!string(TC.A));
 }

Yo! thank you Bearophile.

 A bit strange that '%s' does not produce the same string as to!string...

 I agree, I have a bug report on this.

More generally, I think default %s and to!string should systematically output 
the literal notation able to reconstruct the string'ed element. I mean, as far 
as possible without getting into much complication (in cases of struct or class 
object, which often have data members not read in by the contructor).
About the annoying case of strings, is there a tool func somewhere to 
reconstruct an escaped version? (like eg when the string holds '"') I have 
looked for it without success. Else, i guess Phobos very much needs that. (the 
equivalent of python's %r or repr() for strings)

Simple, clear, consistent, informative, useful.

Denis
-- 
_________________
vita es estrany
spir.wikidot.com