http://d.puremagic.com/issues/show_bug.cgi?id=6447

           Summary: iota(BigInt) too
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: Phobos
        AssignedTo: nobody@puremagic.com
        ReportedBy: bearophile_hugs@eml.cc


--- Comment #0 from bearophile_hugs@eml.cc 2011-08-06 19:56:56 PDT ---
Sometimes I'd like to generate a range of bigints too:

Enhancement:

import std.bigint: BigInt;
import std.range: iota;
void main() {
    auto x = iota(BigInt(10));
}


Currently DMD gives:

...\std\range.d(4028): Error: template std.range.iota(B,E,S) if
((isIntegral!(CommonType!(B,E)) || isPointer!(CommonType!(B,E))) &&
isIntegral!(S)) does not match any function template declaration
...\std\range.d(4028): Error: template std.range.iota(B,E,S) if
((isIntegral!(CommonType!(B,E)) || isPointer!(CommonType!(B,E))) &&
isIntegral!(S)) cannot deduce template function from argument types
!()(BigInt,BigInt)
test.d(4): Error: template instance std.range.iota!(BigInt) error instantiating

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------

http://d.puremagic.com/issues/show_bug.cgi?id=6447


Jonathan M Davis <jmdavisProg@gmx.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jmdavisProg@gmx.com


--- Comment #1 from Jonathan M Davis <jmdavisProg@gmx.com> 2011-08-06 20:05:50 PDT ---
BigInt isn't considered an integral by isIntegral, hence why it doesn't work. We should probably look at having a template in std.traits which covers both the built-in integral types and BigInt so that those functions which can work with both have an easy way to test for it. It's either that or every function that could use BigInt is going to have to test for it explicitly on top of testing for isIntegral.

Regardless, I don't see any reason why using iota with BigInt shouldn't be made to work.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------

http://d.puremagic.com/issues/show_bug.cgi?id=6447


Russel Winder <russel@winder.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |russel@winder.org.uk


--- Comment #2 from Russel Winder <russel@winder.org.uk> 2013-05-28 11:37:57 BST ---
I don't have the time, and likely not the knowledge, to fix this and provide a pull request. Is there anyone who does? This is a two year old problem that means D is not useful for applications using data types other than the hardware types, which is a lot of applications.

Is this a symptom of the fact that Phobos is really predicated on use of hardware types more generally?

(This comment is really to get me on the cc list as there seems to be a
requirement to make a comment in order to add oneself to the cc list :-((

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------

http://d.puremagic.com/issues/show_bug.cgi?id=6447



--- Comment #3 from bearophile_hugs@eml.cc 2013-05-28 04:15:16 PDT ---
(In reply to comment #2)

> Is this a symptom of the fact that Phobos is really predicated on use of hardware types more generally?

I think it's mostly a symptom of D/Phobos not having many contributors :-)

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------

http://d.puremagic.com/issues/show_bug.cgi?id=6447


hsteoh@quickfur.ath.cx changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hsteoh@quickfur.ath.cx


--- Comment #4 from hsteoh@quickfur.ath.cx 2013-08-18 22:39:52 PDT ---
Related: issue #10762.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------