On 02/01/2016 03:46 AM, Dragos Carp wrote:
On Friday, 29 January 2016 at 20:40:18 UTC, Andrei Alexandrescu wrote:
That'd be interesting if (a) lazy and (b) general a la
https://dlang.org/library/std/range/recurrence.html. -- Andrei
To be clear, by general you mean to allow functions with more than 2
arguments?
My ambitions were lower :o). I was thinking of supporting any operation,
not only summation.
For example if you have:
foo(int i, int j, int k) { return i + j + k; }
then:
scan!foo([1, 2, 3, 4]).array returns [1, 2, 6, 12]
Is "scan" (thanks Timon) telling enough? The python "accumulate"
conflicts with the C++ meaning.
That's a sliding window of compile-time-known size, which is interesting
on its own. There are several ways to handle the limits, each useful in
certain situations. I don't get where 12 comes from in your example.
Andrei
