What library functionality would you most like to see in D?

[bearophile]

Jonathan M Davis:

> I think that it would be useful to query the community for what piece of 
> library functionality they don't currently have in D and would most like to 
> see.

This is not a complete list, I have surely forgotten some interesting things.

Some things in modules already present:
- Few more higher order functions like amap/afilter/table, something to build an associative array, a redesigned max/min, ecc;
- Few more math functions like isLog2, intSqrt, intCubeRoot, etc;
- Lazy permutations, combinations, etc;
- Few more handy collections, like a stack, deque, hashSet, treeSet, growable circular queue, Union-Find;
- Maybe even Range Minimum Query;
- Two or three more types of Heaps (like the Fibonacci one);
- A very lazy prime number generator range;
- A flexible tagged pointer (a struct);
- A hierarchical manual memory allocator;
- Few more functionalities for std_bitmanip.BitArray and std.bitmanip.bitfields;
- Weak references;
- A prettyPrinter function;
- Tuple slicing and joining;
- Some standard exceptions;
- In Bugzilla I have some enhancement requests where sometimes I have added the code for a new functions I'd like to be added.


Few new modules:
- std.graphics: small graphics module, useful for simple quick things and to define a standard basic interface for other graphic D libraries;
- std.image: module to read and write png, jpeg, gif, bmp, ppm images;
- std.graph: Graph module, with some useful algorithms (BFS, shortest path, connected components, etc). This is also useful to fix an API for external graph packages too;
- std.geometry: A small geometry module with very fast 2D, 3D and 4D vectors (for 3D graphics, games, etc), convex hull algorithm, polygon centroid algorithm, to avoid reinventing the wheel every day;
- std.operator: standard operators as functions, to be used with higher order functions;
- std.icollections: few immutable collections, to be used in parallel code or for safety. Maybe they need their own module.


Tools added to the standard distribution:
- A statistical profiler like http://h3.gd/code/xfProf/

Bye,
bearophile