[Issue 5406] [patch] Major regressions in std.algorithm for functions relying on is(typeof(binaryFun!... due to a static assert in binaryFunImpl
http://d.puremagic.com/issues/show_bug.cgi?id=5406 Lars T. Kyllingstad bugzi...@kyllingen.net changed: What|Removed |Added CC||bugzi...@kyllingen.net --- Comment #1 from Lars T. Kyllingstad bugzi...@kyllingen.net 2011-02-03 00:23:39 PST --- Do you have a test case? I tried your example find(goodbye, bye); and it works for me. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 5406] [patch] Major regressions in std.algorithm for functions relying on is(typeof(binaryFun!... due to a static assert in binaryFunImpl
http://d.puremagic.com/issues/show_bug.cgi?id=5406
--- Comment #2 from Rob Jacques sandf...@jhu.edu 2011-02-03 09:46:11 PST ---
I apologize for the bad test case. In retrospect, I believe I didn't try to
reduce it, I simply extrapolated the issue from the error message reported.
Here is a properly test case:
import std.string;
pragma(msg, replace(int.stringof,int,real));
Which generates the error:
C:\dmd2\src\phobos\std\functional.d(177): Error: static assert Bad binary
function q{a == b}. You need to use a valid D expression using symbols a of
type dchar and b of type const(char)[].
C:\dmd2\src\phobos\std\functional.d(180):instantiated from here:
Body!(dchar,const(char)[])
C:\dmd2\src\phobos\std\algorithm.d(2149):instantiated from here:
result!(dchar,const(char)[])
What got me was that algorithm.d(2149) turns out to be:
2147: R find(alias pred = a == b, R, E)(R haystack, E needle)
2148: if (isInputRange!R
2149: is(typeof(binaryFun!pred(haystack.front, needle)) : bool))
However, this only seems to generate a bug in certain compile-time contexts.
For example, enum bug = replace(int.stringof,int,real); compiles, while:
import std.typetuple;
mixin( alias TypeTuple!(~replace(int.stringof,int,real)~)
This2Algebraic;);
doesn't.
Although I don't know how/why find is called.
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[Issue 5406] [patch] Major regressions in std.algorithm for functions relying on is(typeof(binaryFun!... due to a static assert in binaryFunImpl
http://d.puremagic.com/issues/show_bug.cgi?id=5406
Rob Jacques sandf...@jhu.edu changed:
What|Removed |Added
Status|NEW |RESOLVED
Resolution||DUPLICATE
--- Comment #3 from Rob Jacques sandf...@jhu.edu 2011-02-03 14:58:35 PST ---
As identified by soul...@gmail.com, this appears to be identical to Issue 5373
- Regression (2.051) CTFE and std.string.replace() causes Bad binary function
q{a == b}...
*** This issue has been marked as a duplicate of issue 5373 ***
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