What's missing from Phobos for Orbit (package manager)

[John Colvin]

On Thursday, 14 February 2013 at 20:28:23 UTC, Jacob Carlborg 
wrote:
> On 2013-02-14 21:23, tn wrote:
>
>> Yes for a default predicate, BUT I think it should be "a => a" 
>> (that is,
>> identity function) instead of "a => true". Same default 
>> predicate should
>> be applied to "all" function as well. This way the behavior 
>> with boolean
>> ranges would match the behavior of "any" and "all" at least in 
>> Python
>> and Matlab (and apparently also Ruby).
>
> Right. But the problem with that is that a zero in D is 
> considered false wheres in Ruby it's true. The only things that 
> are false in Ruby is "nil" and "false".

In python and matlab 0 is false and "any" treats them as such.