• d-bugmail puremagic.com Feb 04 2012
• d-bugmail puremagic.com Apr 19 2012
• d-bugmail puremagic.com Apr 19 2012
• d-bugmail puremagic.com Apr 19 2012

d-bugmail puremagic.com writes:

http://d.puremagic.com/issues/show_bug.cgi?id=7438

           Summary: Functions from std.conv should be pure
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: trivial
          Priority: P2
         Component: Phobos
        AssignedTo: nobody puremagic.com
        ReportedBy: SyntaxColoring gmail.com


--- Comment #0 from SyntaxColoring gmail.com 2012-02-04 12:55:56 PST ---
The conversion functions in std.conv always yield the same results for the same
input, so they should be marked as pure.

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d-bugmail puremagic.com writes:

http://d.puremagic.com/issues/show_bug.cgi?id=7438


SomeDude <lovelydear mailmetrash.com> changed:

           What    |Removed                     |Added
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                 CC|                            |lovelydear mailmetrash.com


--- Comment #2 from SomeDude <lovelydear mailmetrash.com> 2012-04-19 08:46:04
PDT ---
Should we close ?

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d-bugmail puremagic.com writes:

http://d.puremagic.com/issues/show_bug.cgi?id=7438


bearophile_hugs eml.cc changed:

           What    |Removed                     |Added
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                 CC|                            |bearophile_hugs eml.cc


--- Comment #3 from bearophile_hugs eml.cc 2012-04-19 15:02:53 PDT ---
(In reply to comment #2)
 Should we close ?


I agree with Jonathan M Davis that maybe asking for them to be always pure is a
bit too much (this is debatable. Maybe it's a good thing still).

But I think we can't close this bug report before this little program, that
shows a very basic usage of to!(), compiles with no errors or warnings:


import std.conv: to;
void main() pure {
    string r = to!string(to!real("2.5"));
}

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d-bugmail puremagic.com writes:

http://d.puremagic.com/issues/show_bug.cgi?id=7438



--- Comment #4 from Jonathan M Davis <jmdavisProg gmx.com> 2012-04-19 15:11:15
PDT ---
I'd be very tempted to argue that that should be a separate bug. There's a big
difference between std.conv.to should always be pure for everything and
std.conv.to should be pure when converting to strings.

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