H

.h file header, 19

handler, seecatch

has-a relationship, 637

hash<key_type>, 445, 447

• override, 446

• specialization, 709, 788

• compatible with == (equality), 710

hash function, 443, 447

HasPtr

• reference counted, 514–516

• copy assignment, 516

• destructor, 515

• valuelike, 512

• copy assignment, 512

• move assignment, 540

• move constructor, 540

• swap, 516

header, 6, 27

• iostream, 27

• C library, 91

• const and constexpr, 76

• default argument, 238

• function declaration, 207

• .h file, 19

• #include, 6, 21

• inline function, 240

• inline member function definition, 273

• namespace members, 786

• standard, 6

• table of library names, 866

• template definition, 656

• template specialization, 708

• user-defined, 21, 76–77, 207, 240

• using declaration, 83

• Sales_data.h, 76

• Sales_item.h, 19

• algorithm, 376

• array, 329

• bitset, 723

• cassert, 241

• cctype, 91

• cmath, 751, 757

• cstddef, 116, 120

• cstdlib, 54, 227, 778, 823

• cstring, 122

• ctime, 749

• deque, 329

• exception, 197

• forward_list, 329

• fstream, 310, 316

• functional, 397, 399, 400, 575, 577, 843

• initializer_list, 220

• iomanip, 756

• iostream, 6, 310, 762

• iterator, 119, 382, 401

• list, 329

• map, 420

• memory, 450, 451, 481, 483

• new, 197, 460, 478, 821

• numeric, 376, 881

• queue, 371

• random, 745

• regex, 728

• set, 420

• sstream, 310, 321

• stack, 370

• stdexcept, 194, 197

• string, 74, 76, 84

• tuple, 718

• type_info, 197

• type_traits, 684

• typeinfo, 826, 827, 831

• unordered_map, 420

• unordered_set, 420

• utility, 426, 530, 533, 694

• vector, 96, 329

header guard, 77, 79

• preprocessor, 77

heap, 450, 491

hex, manipulator, 754

hexadecimal

• escape sequence (\Xnnn), 39

• literal (0Xnum or 0xnum), 38

hexfloat manipulator, 757

high-order bits, 723, 770