[Issue 9550] New: Repeat!fun(size_t n)

d-bugmail at puremagic.com d-bugmail at puremagic.com
Tue Feb 19 23:45:52 PST 2013


http://d.puremagic.com/issues/show_bug.cgi?id=9550

           Summary: Repeat!fun(size_t n)
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: Phobos
        AssignedTo: nobody at puremagic.com
        ReportedBy: daniel350 at bigpond.com


--- Comment #0 from Daniel Cousens <daniel350 at bigpond.com> 2013-02-19 23:45:50 PST ---
Unless I'm missing something, after several separate discussions on the D IRC,
I could not find a way to run a function 'n' times lazily for a range without
doing hackery's like this:

iota(100).map!(x => uniform(0, 76));

The use case is where you want to repeat an (impure) function n times lazily.
A possible example:

auto five_random_ints = take(recurrence!(uniform!int), 5)

or

auto five_random_ints = repeat!(uniform!int)(5);

If there is an idiomatic way to do this already that I am missing, sorry for
taking up your time.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------


More information about the Digitalmars-d-bugs mailing list