ceph/src/boost/libs/ptr_container/doc/todo.txt

   1 #//
   2 #// Boost.Pointer Container
   3 #//
   4 #//  Copyright Thorsten Ottosen 2003-2005. Use, modification and
   5 #//  distribution is subject to the Boost Software License, Version
   6 #//  1.0. (See accompanying file LICENSE_1_0.txt or copy at
   7 #//  http://www.boost.org/LICENSE_1_0.txt)
   8 #//
   9 #// For more information, see http://www.boost.org/libs/ptr_container/
  10 #//
  11
  12 1. use splice() to speed up transfer for list
  13
  14 5. small usage exmaple with each class
  15
  16 10. update tutorial to show boost::assign link + auto_ptr
  17
  18
  19 11. should find_key() be added to ptr_map?
  20
  21
  22
  23 13. transfer for set/map may need to
  24 be revisted (rg. !from.empty() precondition)
  25
  26
  27 15. Some of the headlines are too  big...
  28
  29
  30 18. range-based sort() needs to be provided for list. use stable_sort for this purpose.
  31
  32
  33 19. use flat_set,flat_map internally when certain situations arise, eg. when the size of the objects
  34     is small, eg. 4bytes (does this affect key=string?
  35
  36
  37
  38 21. map::at() should throw bad_index
  39
  40 auto_type skal være converter-bar til std::auto_ptr<U>, if the deleter is
  41 trivial (heap_clone_allocator)
  42
  43 (Spørg Thomas Witt om denne ændring can komme med...kan ikke ødelægge existerende kode, som
  44 vill have kaldt .release()) Kræve en hel del ambiguity resolution pga auto_ptr augument er
  45 templates og ikke non-templates! Desuden kan vi ikke bruge non-template argument, da alle
  46 converterings operatorer for auto_ptr tager en & argument og ikke en by-value!!! måske
  47 skal der blot et hack til, hvor vi tilføjer en ny ukenkt klasse og overloader kun for
  48 den, og så laver en implicit konvertering til denne i static_move_ptr
  49
  50 The easiert implementation would be to detect its presence in the
  51 body of the range based overloads and then dispatch to that implementation.
  52
  53
  54 22. hvor gode er kompilere til at optimere release() for en auto_ptr. Hvordan med move_ptr
  55 and auto_ptr interaction? Contracts må kunne fortælle kompileren at den skal
  56 genere optimeret kode
  57
  58 template< class T >
  59 class auto_ptr
  60 {
  61    T* get() const;
  62
  63    //
  64    // this expresses that the constructor is a no-op if
  65    // the condition is true. This might be useful in many other
  66    // context
  67    //
  68    ~auto_ptr()
  69      precondition { if( get() == 0 ) return; }
  70
  71    T* release()
  72     postcondition { get() == 0; }
  73 }
  74
  75 ...
  76
  77 std::auto_ptr<T> p( new T );
  78 foo( p.release() );
  79 // don't generate destructor
  80
  81 Does raw_storage iterator have an impact on in-place consrtcution
  82
  83