• Russel Winder via Digitalmars-d-learn (14/14) May 25 2017 C++ has std:priority_queue as a wrapper around a heap to create a
• Era Scarecrow (14/18) May 25 2017 Do you even need a wrapper?

Russel Winder via Digitalmars-d-learn <digitalmars-d-learn puremagic.com> writes:

C++ has std:priority_queue as a wrapper around a heap to create a
sorted queue. Am I right in thinking that D has no direct equivalent,
that you have to build you own wrapper around a heap?
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Russel.
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Era Scarecrow <rtcvb32 yahoo.com> writes:

On Thursday, 25 May 2017 at 10:39:01 UTC, Russel Winder wrote:
 C++ has std:priority_queue as a wrapper around a heap to create 
 a sorted queue. Am I right in thinking that D has no direct 
 equivalent, that you have to build you own wrapper around a 
 heap?

  Do you even need a wrapper?

  Glancing at priority_queue it more or less ensures the largest 
element is always first...

  However glancing at the D documentation, you already get the 
same thing.

https://dlang.org/phobos/std_container_binaryheap.html
      property ElementType!Store front();
         Returns a copy of the front of the heap, which is the 
largest element according to less.


  A quick test shows inserted items are both sorted and you get 
the largest element immediately. So honestly it sounds like it's 
already built in... no modification or wrapper needed, unless of 
course I'm missing something?