Walter Bright wrote:
Andrei Alexandrescu wrote:
Michel Fortin wrote:
On 2009-01-10 00:10:11 -0500, Andrei Alexandrescu
<seewebsiteforem...@erdani.org> said:
The problem is identifying if this would be faster than recomputing
the return value.
I used memoizers for exp and log (the most called functions in some
code I wrote) and it made the original version feel like it was
driving in reverse.
That's only true because, in your specific context, those functions
were called often with the same input. In a program that rarely use
the same inputs, your memoizing functions will just waste time and
memory.
No, because I use interpolation.
That's way beyond the ability of a compiler to do automatically. The
compiler would have to understand that the pure function produces
continuous results.
You're replying to the wrong guy. I'm saying: the compiler shouldn't
have to do so, but it should allow functions to do it.
Lately it looks like a lot of the problems discussed here inevitably
lead to a built-in feature. We want properties, let's have a property
thingy. We want memoization, let's have a memoize thingy. We want
optimally aligned structures, let's have an optimal align thingy. I'm
holding my breath for a request for the kitchen sink thingy.
Andrei
