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October 22, 2009
[Issue 3436] New: std.functional.compose with only one function
http://d.puremagic.com/issues/show_bug.cgi?id=3436

          Summary: std.functional.compose with only one function
          Product: D
          Version: 2.035
         Platform: Other
       OS/Version: Windows
           Status: NEW
         Keywords: patch
         Severity: minor
         Priority: P2
        Component: Phobos
       AssignedTo: nobody@puremagic.com
       ReportedBy: dsimcha@yahoo.com


--- Comment #0 from David Simcha <dsimcha@yahoo.com> 2009-10-22 12:14:50 PDT ---
import std.functional, std.math;

alias compose!(sqrt) myCompose;


C:\dmd2\windows\bin\..\..\src\phobos\std\functional.d(474): Error: tuple index
0 exceeds 0

Only happens in the degenerate case of only passing one function to compose. 
Not a terribly severe bug, but might be annoying in some metaprogramming cases,
and should ideally be fixed anyhow.

Fix:  Around line 454, check for this as a special case.

static if(fun.length == 1) {
   alias fun[0] doIt;
} else static if (fun.length == 2) {

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October 22, 2009
[Issue 3436] std.functional.compose with only one function
http://d.puremagic.com/issues/show_bug.cgi?id=3436


Andrei Alexandrescu <andrei@metalanguage.com> changed:

          What    |Removed                     |Added
----------------------------------------------------------------------------
            Status|NEW                         |ASSIGNED
                CC|                            |andrei@metalanguage.com


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June 18, 2010
[Issue 3436] std.functional.compose with only one function
http://d.puremagic.com/issues/show_bug.cgi?id=3436


David Simcha <dsimcha@yahoo.com> changed:

          What    |Removed                     |Added
----------------------------------------------------------------------------
            Status|ASSIGNED                    |RESOLVED
        Resolution|                            |FIXED


--- Comment #1 from David Simcha <dsimcha@yahoo.com> 2010-06-17 18:21:29 PDT ---
Fixed SVN.

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