E

echo command, 4

ECMAScript, 730, 739

regular expression library, 730

edit-compile-debug, 16, 26

errors at link time, 657

element type constraints, container, 329, 341

elimDups program, 383–391

ellipsis, parameter, 222

else, see if statement

emplace

associative container, 432

priority_queue, 371

queue, 371

sequential container, 345

stack, 371

emplace_back

sequential container, 345

StrVec, 704

emplace_front, sequential container, 345

empty

container, 87, 102, 131, 340

priority_queue, 371

queue, 371

stack, 371

encapsulation, 254, 306

benefits of, 270

end

associative container, 430

container, 106, 131, 333, 373

function, 118, 131

multidimensional array, 129

StrBlob, 475

StrVec, 526

end-of-file, 15, 26, 762

character, 15

Endangered, 803

endl, 7

manipulator, 314

ends, manipulator, 315

engine, random-number library, 745, 770

default_random_engine, 745

max, min, 747

retain state, 747

seed, 748, 770

enum, unscoped enumeration, 832

enum class, scoped enumeration, 832

enumeration, 832, 863

as union discriminant, 850

function matching, 835

scoped, 832, 864

unscoped, 832, 864

conversion to integer, 834

unnamed, 832

enumerator, 832, 863

constant expression, 833

conversion to integer, 834

eof, 313

eofbit, 312

equal, 380, 872

equal virtual function, 829

equal_range

algorithm, 722, 873

associative container, 439

equal_to<T>, 575

equality operators, 141

arithmetic conversion, 144

container adaptor, 370

container member, 340

iterator, 106

overloaded operator, 561

pointer, 120

Sales_data, 561

string, 88

vector, 102

erase

associative container, 434

changes container size, 385

invalidates iterator, 349

sequential container, 349

string, 362

error, standard, 6

error_type, 732

error_msg program, 221

ERRORLEVEL, 4

escape sequence, 39, 79

hexadecimal (\Xnnn), 39

octal (\nnn), 39

eval function

AndQuery, 646

NotQuery, 647

OrQuery, 645

exception

class, 193, 200

class hierarchy, 783

deriving from, 782

Sales_data, 783

header, 197

initialization, 197

what, 195, 782

exception handling, 193–198, 772, 817

see also throw

see also catch

exception declaration, 195, 775, 816

and inheritance, 775

must be complete type, 775

exception in destructor, 773

exception object, 774, 817

finding a catch, 776

function try block, 778, 817

handler, see catch

local variables destroyed, 773

noexcept specification, 535, 779, 817

nonthrowing function, 779, 818

safe resource allocation, 467

stack unwinding, 773, 818

terminate function, 196, 200

try block, 194, 773

uncaught exception, 773

unhandled exception, 196

exception object, 774, 817

catch, 775

conversion to pointer, 774

initializes catch parameter, 775

pointer to local object, 774

rethrow, 777

exception safety, 196, 200

smart pointers, 467

exception specification argument, 780

generalized, deprecated, 780

noexcept, 779

nonthrowing, 779

pointer to function, 779, 781

throw(), 780

violation, 779

virtual function, 781

executable file, 5, 251

execution flow

() (call operator), 203

delete, 820

for statement, 186

new, 820

switch statement, 180

throw, 196, 773

EXIT_FAILURE, 227

EXIT_SUCCESS, 227

expansion

forward, 705

parameter pack, 702, 702–704, 714

function parameter pack, 703

template parameter pack, 703

pattern, 702

explicit

constructor, 296, 306

copy initialization, 498

conversion operator, 582, 590

conversion to bool, 583

explicit call to

destructor, 824

overloaded operator, 553

postfix operators, 568

explicit instantiation, 675, 713

explicit template argument, 660, 713

class template, 660

forward, 694

function template, 682

function pointer, 686

template argument deduction, 682

exporting C++ to C, 860

expression, 7, 27, 134, 168

callable, see callable object

constant, 65, 78

lambda, see lambda expression

operand conversion, 159

order of evaluation, 137

parenthesized, 136

precedence and associativity, 136–137

regular, see regular expression

expression statement, 172, 200

extension, compiler, 114, 131

extern

and const variables, 60

explicit instantiation, 675

variable declaration, 45

extern 'C', see linkage directive