Language support for it won't be for a while, so adding it to Phobos is
more appropriate for now.
Andrei Alexandrescu wrote:
Looks good. Long term the conversion function -> delegate should be
put in the language, but David's code seems to do the trick for the
time being.
I'll leave this up to Walter. Walter, do you have the time to
implement the function -> delegate implicit conversion? If not, I
suggest we let David add his code to Phobos, either in std.typecons or
std.functional. One personal preference: instead of delegateFromFunc I
prefer toDelegate as it's a tad more in sync with other names.
Thanks David!
Andrei
David Simcha wrote:
A pretty significant wart of D is that function pointers and
delegates are completely incompatible. I've come up with a good hack
to convert function pointers to delegates without any heap
allocations or additional storage besides the delegate itself being
used. In particular, there are no heap allocations, closures, etc.
involved. However, calling a delegate created from a function
pointer does still incur two indirect function calls instead of one.
I've attached the code. Tell me what you think.
------------------------------------------------------------------------
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