| 1 |
742 |
jeremybenn |
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
|
| 2 |
|
|
<html>
|
| 3 |
|
|
<head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
|
| 4 |
|
|
<title>Tables</title>
|
| 5 |
|
|
</head>
|
| 6 |
|
|
|
| 7 |
|
|
<body bgcolor="#ffffff">
|
| 8 |
|
|
|
| 9 |
|
|
<h1>Tables</h1>
|
| 10 |
|
|
|
| 11 |
|
|
<p>Most of the requirements on containers are presented in the ISO standard
|
| 12 |
|
|
in the form of tables. In order to avoid massive duplication of effort
|
| 13 |
|
|
while documenting all the classes, we follow the standard's lead and
|
| 14 |
|
|
present the base information here. Individual classes will only document
|
| 15 |
|
|
their departures from these tables (removed functions, additional functions,
|
| 16 |
|
|
changes, etc).
|
| 17 |
|
|
</p>
|
| 18 |
|
|
|
| 19 |
|
|
<p>We will not try to duplicate all of the surrounding text (footnotes,
|
| 20 |
|
|
explanations, etc.) from the standard, because that would also entail a
|
| 21 |
|
|
duplication of effort. Some of the surrounding text has been paraphrased
|
| 22 |
|
|
here for clarity. If you are uncertain about the meaning or interpretation
|
| 23 |
|
|
of these notes, consult a good textbook, and/or purchase your own copy of
|
| 24 |
|
|
the standard (it's cheap, see our FAQ).
|
| 25 |
|
|
</p>
|
| 26 |
|
|
|
| 27 |
|
|
<p>The table numbers are the same as those used in the standard. Tables can
|
| 28 |
|
|
be jumped to using their number, e.g., "tables.html#67". Only
|
| 29 |
|
|
Tables 65 through 69 are presented. Some of the active Defect Reports
|
| 30 |
|
|
are also noted or incorporated.
|
| 31 |
|
|
</p>
|
| 32 |
|
|
|
| 33 |
|
|
<hr />
|
| 34 |
|
|
|
| 35 |
|
|
<a name="65"><p>
|
| 36 |
|
|
<table cellpadding="3" cellspacing="5" align="center" rules="rows" border="3"
|
| 37 |
|
|
cols="5" title="Table 65">
|
| 38 |
|
|
<caption><h2>Table 65 --- Container Requirements</h2></caption>
|
| 39 |
|
|
<tr><th colspan="5">
|
| 40 |
|
|
Anything calling itself a container must meet these minimum requirements.
|
| 41 |
|
|
</th></tr>
|
| 42 |
|
|
<tr>
|
| 43 |
|
|
<td><strong>expression</strong></td>
|
| 44 |
|
|
<td><strong>result type</strong></td>
|
| 45 |
|
|
<td><strong>operational semantics</strong></td>
|
| 46 |
|
|
<td><strong>notes, pre-/post-conditions, assertions</strong></td>
|
| 47 |
|
|
<td><strong>complexity</strong></td>
|
| 48 |
|
|
</tr>
|
| 49 |
|
|
|
| 50 |
|
|
<tr>
|
| 51 |
|
|
<td>X::value_type</td>
|
| 52 |
|
|
<td>T</td>
|
| 53 |
|
|
<td> </td>
|
| 54 |
|
|
<td>T is Assignable</td>
|
| 55 |
|
|
<td>compile time</td>
|
| 56 |
|
|
</tr>
|
| 57 |
|
|
|
| 58 |
|
|
<tr>
|
| 59 |
|
|
<td>X::reference</td>
|
| 60 |
|
|
<td>lvalue of T</td>
|
| 61 |
|
|
<td> </td>
|
| 62 |
|
|
<td> </td>
|
| 63 |
|
|
<td>compile time</td>
|
| 64 |
|
|
</tr>
|
| 65 |
|
|
|
| 66 |
|
|
<tr>
|
| 67 |
|
|
<td>X::const_reference</td>
|
| 68 |
|
|
<td>const lvalue of T</td>
|
| 69 |
|
|
<td> </td>
|
| 70 |
|
|
<td> </td>
|
| 71 |
|
|
<td>compile time</td>
|
| 72 |
|
|
</tr>
|
| 73 |
|
|
|
| 74 |
|
|
<tr>
|
| 75 |
|
|
<td>X::iterator</td>
|
| 76 |
|
|
<td>iterator type pointing to T</td>
|
| 77 |
|
|
<td> </td>
|
| 78 |
|
|
<td>Any iterator category except output iterator.
|
| 79 |
|
|
Convertible to X::const_iterator.</td>
|
| 80 |
|
|
<td>compile time</td>
|
| 81 |
|
|
</tr>
|
| 82 |
|
|
|
| 83 |
|
|
<tr>
|
| 84 |
|
|
<td>X::const_iterator</td>
|
| 85 |
|
|
<td>iterator type pointing to const T</td>
|
| 86 |
|
|
<td> </td>
|
| 87 |
|
|
<td>Any iterator category except output iterator.</td>
|
| 88 |
|
|
<td>compile time</td>
|
| 89 |
|
|
</tr>
|
| 90 |
|
|
|
| 91 |
|
|
<tr>
|
| 92 |
|
|
<td>X::difference_type</td>
|
| 93 |
|
|
<td>signed integral type</td>
|
| 94 |
|
|
<td> </td>
|
| 95 |
|
|
<td>identical to the difference type of X::iterator and X::const_iterator</td>
|
| 96 |
|
|
<td>compile time</td>
|
| 97 |
|
|
</tr>
|
| 98 |
|
|
|
| 99 |
|
|
<tr>
|
| 100 |
|
|
<td>X::size_type</td>
|
| 101 |
|
|
<td>unsigned integral type</td>
|
| 102 |
|
|
<td> </td>
|
| 103 |
|
|
<td>size_type can represent any non-negative value of difference_type</td>
|
| 104 |
|
|
<td>compile time</td>
|
| 105 |
|
|
</tr>
|
| 106 |
|
|
|
| 107 |
|
|
<tr>
|
| 108 |
|
|
<td>X u;</td>
|
| 109 |
|
|
<td> </td>
|
| 110 |
|
|
<td> </td>
|
| 111 |
|
|
<td>post: u.size() == 0</td>
|
| 112 |
|
|
<td>constant</td>
|
| 113 |
|
|
</tr>
|
| 114 |
|
|
|
| 115 |
|
|
<tr>
|
| 116 |
|
|
<td>X();</td>
|
| 117 |
|
|
<td> </td>
|
| 118 |
|
|
<td> </td>
|
| 119 |
|
|
<td>X().size == 0</td>
|
| 120 |
|
|
<td>constant</td>
|
| 121 |
|
|
</tr>
|
| 122 |
|
|
|
| 123 |
|
|
<tr>
|
| 124 |
|
|
<td>X(a);</td>
|
| 125 |
|
|
<td> </td>
|
| 126 |
|
|
<td> </td>
|
| 127 |
|
|
<td>a == X(a)</td>
|
| 128 |
|
|
<td>linear</td>
|
| 129 |
|
|
</tr>
|
| 130 |
|
|
|
| 131 |
|
|
<tr>
|
| 132 |
|
|
<td>X u(a);<br />X u = a;</td>
|
| 133 |
|
|
<td> </td>
|
| 134 |
|
|
<td> </td>
|
| 135 |
|
|
<td>post: u == a. Equivalent to: X u; u = a;</td>
|
| 136 |
|
|
<td>linear</td>
|
| 137 |
|
|
</tr>
|
| 138 |
|
|
|
| 139 |
|
|
<tr>
|
| 140 |
|
|
<td>(&a)->~X();</td>
|
| 141 |
|
|
<td>void</td>
|
| 142 |
|
|
<td> </td>
|
| 143 |
|
|
<td>dtor is applied to every element of a; all the memory is deallocated</td>
|
| 144 |
|
|
<td>linear</td>
|
| 145 |
|
|
</tr>
|
| 146 |
|
|
|
| 147 |
|
|
<tr>
|
| 148 |
|
|
<td>a.begin()</td>
|
| 149 |
|
|
<td>iterator; const_iterator for constant a</td>
|
| 150 |
|
|
<td> </td>
|
| 151 |
|
|
<td> </td>
|
| 152 |
|
|
<td>constant</td>
|
| 153 |
|
|
</tr>
|
| 154 |
|
|
|
| 155 |
|
|
<tr>
|
| 156 |
|
|
<td>a.end()</td>
|
| 157 |
|
|
<td>iterator; const_iterator for constant a</td>
|
| 158 |
|
|
<td> </td>
|
| 159 |
|
|
<td> </td>
|
| 160 |
|
|
<td>constant</td>
|
| 161 |
|
|
</tr>
|
| 162 |
|
|
|
| 163 |
|
|
<tr>
|
| 164 |
|
|
<td>a == b</td>
|
| 165 |
|
|
<td>convertible to bool</td>
|
| 166 |
|
|
<td> </td>
|
| 167 |
|
|
<td>== is an equivalence relation. a.size()==b.size() &&
|
| 168 |
|
|
equal(a.begin(),a.end(),b.begin())</td>
|
| 169 |
|
|
<td>linear</td>
|
| 170 |
|
|
</tr>
|
| 171 |
|
|
|
| 172 |
|
|
<tr>
|
| 173 |
|
|
<td>a != b</td>
|
| 174 |
|
|
<td>convertible to bool</td>
|
| 175 |
|
|
<td> </td>
|
| 176 |
|
|
<td>equivalent to !(a==b)</td>
|
| 177 |
|
|
<td>linear</td>
|
| 178 |
|
|
</tr>
|
| 179 |
|
|
|
| 180 |
|
|
<tr>
|
| 181 |
|
|
<td>a.swap(b)</td>
|
| 182 |
|
|
<td>void</td>
|
| 183 |
|
|
<td> </td>
|
| 184 |
|
|
<td>swap(a,b)</td>
|
| 185 |
|
|
<td>may or may not have constant complexity</td>
|
| 186 |
|
|
</tr>
|
| 187 |
|
|
|
| 188 |
|
|
<tr>
|
| 189 |
|
|
<td>r = a</td>
|
| 190 |
|
|
<td>X&</td>
|
| 191 |
|
|
<td> </td>
|
| 192 |
|
|
<td>r == a</td>
|
| 193 |
|
|
<td>linear</td>
|
| 194 |
|
|
</tr>
|
| 195 |
|
|
|
| 196 |
|
|
<!-- a fifth column, "operation semantics," magically appears in the table
|
| 197 |
|
|
at this point... wtf? -->
|
| 198 |
|
|
<tr>
|
| 199 |
|
|
<td>a.size()</td>
|
| 200 |
|
|
<td>size_type</td>
|
| 201 |
|
|
<td>a.end() - a.begin()</td>
|
| 202 |
|
|
<td> </td>
|
| 203 |
|
|
<td>may or may not have constant complexity</td>
|
| 204 |
|
|
</tr>
|
| 205 |
|
|
|
| 206 |
|
|
<tr>
|
| 207 |
|
|
<td>a.max_size()</td>
|
| 208 |
|
|
<td>size_type</td>
|
| 209 |
|
|
<td>size() of the largest possible container</td>
|
| 210 |
|
|
<td> </td>
|
| 211 |
|
|
<td>may or may not have constant complexity</td>
|
| 212 |
|
|
</tr>
|
| 213 |
|
|
|
| 214 |
|
|
<tr>
|
| 215 |
|
|
<td>a.empty()</td>
|
| 216 |
|
|
<td>convertible to bool</td>
|
| 217 |
|
|
<td>a.size() == 0</td>
|
| 218 |
|
|
<td> </td>
|
| 219 |
|
|
<td>constant</td>
|
| 220 |
|
|
</tr>
|
| 221 |
|
|
|
| 222 |
|
|
<tr>
|
| 223 |
|
|
<td>a < b</td>
|
| 224 |
|
|
<td>convertible to bool</td>
|
| 225 |
|
|
<td>lexographical_compare( a.begin, a.end(), b.begin(), b.end())</td>
|
| 226 |
|
|
<td>pre: < is defined for T and is a total ordering relation</td>
|
| 227 |
|
|
<td>linear</td>
|
| 228 |
|
|
</tr>
|
| 229 |
|
|
|
| 230 |
|
|
<tr>
|
| 231 |
|
|
<td>a > b</td>
|
| 232 |
|
|
<td>convertible to bool</td>
|
| 233 |
|
|
<td>b < a</td>
|
| 234 |
|
|
<td> </td>
|
| 235 |
|
|
<td>linear</td>
|
| 236 |
|
|
</tr>
|
| 237 |
|
|
|
| 238 |
|
|
<tr>
|
| 239 |
|
|
<td>a <= b</td>
|
| 240 |
|
|
<td>convertible to bool</td>
|
| 241 |
|
|
<td>!(a > b)</td>
|
| 242 |
|
|
<td> </td>
|
| 243 |
|
|
<td>linear</td>
|
| 244 |
|
|
</tr>
|
| 245 |
|
|
|
| 246 |
|
|
<tr>
|
| 247 |
|
|
<td>a >= b</td>
|
| 248 |
|
|
<td>convertible to bool</td>
|
| 249 |
|
|
<td>!(a < b)</td>
|
| 250 |
|
|
<td> </td>
|
| 251 |
|
|
<td>linear</td>
|
| 252 |
|
|
</tr>
|
| 253 |
|
|
</table title="Table 65"></p></a>
|
| 254 |
|
|
|
| 255 |
|
|
|
| 256 |
|
|
<a name="66"><p>
|
| 257 |
|
|
<table cellpadding="3" cellspacing="5" align="center" rules="rows" border="3"
|
| 258 |
|
|
cols="4" title="Table 66">
|
| 259 |
|
|
<caption><h2>Table 66 --- Reversible Container Requirements</h2></caption>
|
| 260 |
|
|
<tr><th colspan="4">
|
| 261 |
|
|
If a container's iterator is bidirectional or random-access, then the
|
| 262 |
|
|
container also meets these requirements.
|
| 263 |
|
|
Deque, list, vector, map, multimap, set, and multiset are such containers.
|
| 264 |
|
|
</th></tr>
|
| 265 |
|
|
<tr>
|
| 266 |
|
|
<td><strong>expression</strong></td>
|
| 267 |
|
|
<td><strong>result type</strong></td>
|
| 268 |
|
|
<td><strong>notes, pre-/post-conditions, assertions</strong></td>
|
| 269 |
|
|
<td><strong>complexity</strong></td>
|
| 270 |
|
|
</tr>
|
| 271 |
|
|
|
| 272 |
|
|
<tr>
|
| 273 |
|
|
<td>X::reverse_iterator</td>
|
| 274 |
|
|
<td>iterator type pointing to T</td>
|
| 275 |
|
|
<td>reverse_iterator<iterator></td>
|
| 276 |
|
|
<td>compile time</td>
|
| 277 |
|
|
</tr>
|
| 278 |
|
|
|
| 279 |
|
|
<tr>
|
| 280 |
|
|
<td>X::const_reverse_iterator</td>
|
| 281 |
|
|
<td>iterator type pointing to const T</td>
|
| 282 |
|
|
<td>reverse_iterator<const_iterator></td>
|
| 283 |
|
|
<td>compile time</td>
|
| 284 |
|
|
</tr>
|
| 285 |
|
|
|
| 286 |
|
|
<tr>
|
| 287 |
|
|
<td>a.rbegin()</td>
|
| 288 |
|
|
<td>reverse_iterator; const_reverse_iterator for constant a</td>
|
| 289 |
|
|
<td>reverse_iterator(end())</td>
|
| 290 |
|
|
<td>constant</td>
|
| 291 |
|
|
</tr>
|
| 292 |
|
|
|
| 293 |
|
|
<tr>
|
| 294 |
|
|
<td>a.rend()</td>
|
| 295 |
|
|
<td>reverse_iterator; const_reverse_iterator for constant a</td>
|
| 296 |
|
|
<td>reverse_iterator(begin())</td>
|
| 297 |
|
|
<td>constant</td>
|
| 298 |
|
|
</tr>
|
| 299 |
|
|
</table title="Table 66"></p></a>
|
| 300 |
|
|
|
| 301 |
|
|
|
| 302 |
|
|
<a name="67"><p>
|
| 303 |
|
|
<table cellpadding="3" cellspacing="5" align="center" rules="rows" border="3"
|
| 304 |
|
|
cols="3" title="Table 67">
|
| 305 |
|
|
<caption><h2>Table 67 --- Sequence Requirements</h2></caption>
|
| 306 |
|
|
<tr><th colspan="3">
|
| 307 |
|
|
These are in addition to the requirements of <a href="#65">containers</a>.
|
| 308 |
|
|
Deque, list, and vector are such containers.
|
| 309 |
|
|
</th></tr>
|
| 310 |
|
|
<tr>
|
| 311 |
|
|
<td><strong>expression</strong></td>
|
| 312 |
|
|
<td><strong>result type</strong></td>
|
| 313 |
|
|
<td><strong>notes, pre-/post-conditions, assertions</strong></td>
|
| 314 |
|
|
</tr>
|
| 315 |
|
|
|
| 316 |
|
|
<tr>
|
| 317 |
|
|
<td>X(n,t)<br />X a(n,t)</td>
|
| 318 |
|
|
<td> </td>
|
| 319 |
|
|
<td>constructs a sequence with n copies of t<br />post: size() == n</td>
|
| 320 |
|
|
</tr>
|
| 321 |
|
|
|
| 322 |
|
|
<tr>
|
| 323 |
|
|
<td>X(i,j)<br />X a(i,j)</td>
|
| 324 |
|
|
<td> </td>
|
| 325 |
|
|
<td>constructs a sequence equal to the range [i,j)<br />
|
| 326 |
|
|
post: size() == distance(i,j)</td>
|
| 327 |
|
|
</tr>
|
| 328 |
|
|
|
| 329 |
|
|
<tr>
|
| 330 |
|
|
<td>a.insert(p,t)</td>
|
| 331 |
|
|
<td>iterator (points to the inserted copy of t)</td>
|
| 332 |
|
|
<td>inserts a copy of t before p</td>
|
| 333 |
|
|
</tr>
|
| 334 |
|
|
|
| 335 |
|
|
<tr>
|
| 336 |
|
|
<td>a.insert(p,n,t)</td>
|
| 337 |
|
|
<td>void</td>
|
| 338 |
|
|
<td>inserts n copies of t before p</td>
|
| 339 |
|
|
</tr>
|
| 340 |
|
|
|
| 341 |
|
|
<tr>
|
| 342 |
|
|
<td>a.insert(p,i,j)</td>
|
| 343 |
|
|
<td>void</td>
|
| 344 |
|
|
<td>inserts copies of elements in [i,j) before p<br />
|
| 345 |
|
|
pre: i, j are not iterators into a</td>
|
| 346 |
|
|
</tr>
|
| 347 |
|
|
|
| 348 |
|
|
<tr>
|
| 349 |
|
|
<td>a.erase(q)</td>
|
| 350 |
|
|
<td>iterator (points to the element following q (prior to erasure))</td>
|
| 351 |
|
|
<td>erases the element pointed to by q</td>
|
| 352 |
|
|
</tr>
|
| 353 |
|
|
|
| 354 |
|
|
<tr>
|
| 355 |
|
|
<td>a.erase(q1,q1)</td>
|
| 356 |
|
|
<td>iterator (points to the element pointed to by q2 (prior to erasure))</td>
|
| 357 |
|
|
<td>erases the elements in the range [q1,q2)</td>
|
| 358 |
|
|
</tr>
|
| 359 |
|
|
|
| 360 |
|
|
<tr>
|
| 361 |
|
|
<td>a.clear()</td>
|
| 362 |
|
|
<td>void</td>
|
| 363 |
|
|
<td>erase(begin(),end())<br />post: size() == 0</td>
|
| 364 |
|
|
</tr>
|
| 365 |
|
|
</table title="Table 67"></p></a>
|
| 366 |
|
|
|
| 367 |
|
|
|
| 368 |
|
|
<a name="68"><p>
|
| 369 |
|
|
<table cellpadding="3" cellspacing="5" align="center" rules="rows" border="3"
|
| 370 |
|
|
cols="4" title="Table 68">
|
| 371 |
|
|
<caption><h2>Table 68 --- Optional Sequence Operations</h2></caption>
|
| 372 |
|
|
<tr><th colspan="4">
|
| 373 |
|
|
These operations are only included in containers when the operation can be
|
| 374 |
|
|
done in constant time.
|
| 375 |
|
|
</th></tr>
|
| 376 |
|
|
<tr>
|
| 377 |
|
|
<td><strong>expression</strong></td>
|
| 378 |
|
|
<td><strong>result type</strong></td>
|
| 379 |
|
|
<td><strong>operational semantics</strong></td>
|
| 380 |
|
|
<td><strong>container</strong></td>
|
| 381 |
|
|
</tr>
|
| 382 |
|
|
|
| 383 |
|
|
<tr>
|
| 384 |
|
|
<td>a.front()</td>
|
| 385 |
|
|
<td>reference; const_reference for constant a</td>
|
| 386 |
|
|
<td>*a.begin()</td>
|
| 387 |
|
|
<td>vector, list, deque</td>
|
| 388 |
|
|
</tr>
|
| 389 |
|
|
|
| 390 |
|
|
<tr>
|
| 391 |
|
|
<td>a.back()</td>
|
| 392 |
|
|
<td>reference; const_reference for constant a</td>
|
| 393 |
|
|
<td>*--a.end()</td>
|
| 394 |
|
|
<td>vector, list, deque</td>
|
| 395 |
|
|
</tr>
|
| 396 |
|
|
|
| 397 |
|
|
<tr>
|
| 398 |
|
|
<td>a.push_front(x)</td>
|
| 399 |
|
|
<td>void</td>
|
| 400 |
|
|
<td>a.insert(a.begin(),x)</td>
|
| 401 |
|
|
<td>list, deque</td>
|
| 402 |
|
|
</tr>
|
| 403 |
|
|
|
| 404 |
|
|
<tr>
|
| 405 |
|
|
<td>a.push_back(x)</td>
|
| 406 |
|
|
<td>void</td>
|
| 407 |
|
|
<td>a.insert(a.end(),x)</td>
|
| 408 |
|
|
<td>vector, list, deque</td>
|
| 409 |
|
|
</tr>
|
| 410 |
|
|
|
| 411 |
|
|
<tr>
|
| 412 |
|
|
<td>a.pop_front()</td>
|
| 413 |
|
|
<td>void</td>
|
| 414 |
|
|
<td>a.erase(a.begin())</td>
|
| 415 |
|
|
<td>list, deque</td>
|
| 416 |
|
|
</tr>
|
| 417 |
|
|
|
| 418 |
|
|
<tr>
|
| 419 |
|
|
<td>a.pop_back()</td>
|
| 420 |
|
|
<td>void</td>
|
| 421 |
|
|
<td>a.erase(--a.end())</td>
|
| 422 |
|
|
<td>vector, list, deque</td>
|
| 423 |
|
|
</tr>
|
| 424 |
|
|
|
| 425 |
|
|
<tr>
|
| 426 |
|
|
<td>a[n]</td>
|
| 427 |
|
|
<td>reference; const_reference for constant a</td>
|
| 428 |
|
|
<td>*(a.begin() + n)</td>
|
| 429 |
|
|
<td>vector, deque</td>
|
| 430 |
|
|
</tr>
|
| 431 |
|
|
|
| 432 |
|
|
<tr>
|
| 433 |
|
|
<td>a.at(n)</td>
|
| 434 |
|
|
<td>reference; const_reference for constant a</td>
|
| 435 |
|
|
<td>*(a.begin() + n)<br />throws out_of_range if n>=a.size()</td>
|
| 436 |
|
|
<td>vector, deque</td>
|
| 437 |
|
|
</tr>
|
| 438 |
|
|
</table title="Table 68"></p></a>
|
| 439 |
|
|
|
| 440 |
|
|
|
| 441 |
|
|
<a name="69"><p>
|
| 442 |
|
|
<table cellpadding="3" cellspacing="5" align="center" rules="rows" border="3"
|
| 443 |
|
|
cols="4" title="Table 69">
|
| 444 |
|
|
<caption><h2>Table 69 --- Associative Container Requirements</h2></caption>
|
| 445 |
|
|
<tr><th colspan="4">
|
| 446 |
|
|
These are in addition to the requirements of <a href="#65">containers</a>.
|
| 447 |
|
|
Map, multimap, set, and multiset are such containers. An associative
|
| 448 |
|
|
container supports <em>unique keys</em> (and is written as
|
| 449 |
|
|
<code>a_uniq</code> instead of <code>a</code>) if it may contain at most
|
| 450 |
|
|
one element for each key. Otherwise it supports <em>equivalent keys</em>
|
| 451 |
|
|
(and is written <code>a_eq</code>). Examples of the former are set and map,
|
| 452 |
|
|
examples of the latter are multiset and multimap.
|
| 453 |
|
|
</th></tr>
|
| 454 |
|
|
<tr>
|
| 455 |
|
|
<td><strong>expression</strong></td>
|
| 456 |
|
|
<td><strong>result type</strong></td>
|
| 457 |
|
|
<td><strong>notes, pre-/post-conditions, assertions</strong></td>
|
| 458 |
|
|
<td><strong>complexity</strong></td>
|
| 459 |
|
|
</tr>
|
| 460 |
|
|
|
| 461 |
|
|
<tr>
|
| 462 |
|
|
<td>X::key_type</td>
|
| 463 |
|
|
<td>Key</td>
|
| 464 |
|
|
<td>Key is Assignable</td>
|
| 465 |
|
|
<td>compile time</td>
|
| 466 |
|
|
</tr>
|
| 467 |
|
|
|
| 468 |
|
|
<tr>
|
| 469 |
|
|
<td>X::key_compare</td>
|
| 470 |
|
|
<td>Compare</td>
|
| 471 |
|
|
<td>defaults to less<key_type></td>
|
| 472 |
|
|
<td>compile time</td>
|
| 473 |
|
|
</tr>
|
| 474 |
|
|
|
| 475 |
|
|
<tr>
|
| 476 |
|
|
<td>X::value_compare</td>
|
| 477 |
|
|
<td>a binary predicate type</td>
|
| 478 |
|
|
<td>same as key_compare for set and multiset; an ordering relation on
|
| 479 |
|
|
pairs induced by the first component (Key) for map and multimap</td>
|
| 480 |
|
|
<td>compile time</td>
|
| 481 |
|
|
</tr>
|
| 482 |
|
|
|
| 483 |
|
|
<tr>
|
| 484 |
|
|
<td>X(c)<br />X a(c)</td>
|
| 485 |
|
|
<td> </td>
|
| 486 |
|
|
<td>constructs an empty container which uses c as a comparison object</td>
|
| 487 |
|
|
<td>constant</td>
|
| 488 |
|
|
</tr>
|
| 489 |
|
|
|
| 490 |
|
|
<tr>
|
| 491 |
|
|
<td>X()<br />X a</td>
|
| 492 |
|
|
<td> </td>
|
| 493 |
|
|
<td>constructs an empty container using Compare() as a comparison object</td>
|
| 494 |
|
|
<td>constant</td>
|
| 495 |
|
|
</tr>
|
| 496 |
|
|
|
| 497 |
|
|
<tr>
|
| 498 |
|
|
<td>X(i,j,c)<br />X a(i,j,c)</td>
|
| 499 |
|
|
<td> </td>
|
| 500 |
|
|
<td>constructs an empty container and inserts elements from the range [i,j)
|
| 501 |
|
|
into it; uses c as a comparison object</td>
|
| 502 |
|
|
<td>NlogN in general where N is distance(i,j); linear if [i,j) is
|
| 503 |
|
|
sorted with value_comp()</td>
|
| 504 |
|
|
</tr>
|
| 505 |
|
|
|
| 506 |
|
|
<tr>
|
| 507 |
|
|
<td>X(i,j)<br />X a(i,j)</td>
|
| 508 |
|
|
<td> </td>
|
| 509 |
|
|
<td>same as previous, but uses Compare() as a comparison object</td>
|
| 510 |
|
|
<td>same as previous</td>
|
| 511 |
|
|
</tr>
|
| 512 |
|
|
|
| 513 |
|
|
<tr>
|
| 514 |
|
|
<td>a.key_comp()</td>
|
| 515 |
|
|
<td>X::key_compare</td>
|
| 516 |
|
|
<td>returns the comparison object out of which a was constructed</td>
|
| 517 |
|
|
<td>constant</td>
|
| 518 |
|
|
</tr>
|
| 519 |
|
|
|
| 520 |
|
|
<tr>
|
| 521 |
|
|
<td>a.value_comp()</td>
|
| 522 |
|
|
<td>X::value_compare</td>
|
| 523 |
|
|
<td>returns an object constructed out of the comparison object</td>
|
| 524 |
|
|
<td>constant</td>
|
| 525 |
|
|
</tr>
|
| 526 |
|
|
|
| 527 |
|
|
<tr>
|
| 528 |
|
|
<td>a_uniq.insert(t)</td>
|
| 529 |
|
|
<td>pair<iterator,bool></td>
|
| 530 |
|
|
<td>"Inserts t if and only if there is no element in the container with
|
| 531 |
|
|
key equivalent to the key of t. The bool component of the returned pair
|
| 532 |
|
|
is true -iff- the insertion took place, and the iterator component of
|
| 533 |
|
|
the pair points to the element with key equivalent to the key of
|
| 534 |
|
|
t."</td> <!-- DR 316 -->
|
| 535 |
|
|
<td>logarithmic</td>
|
| 536 |
|
|
</tr>
|
| 537 |
|
|
|
| 538 |
|
|
<tr>
|
| 539 |
|
|
<td>a_eq.insert(t)</td>
|
| 540 |
|
|
<td>iterator</td>
|
| 541 |
|
|
<td>inserts t, returns the iterator pointing to the inserted element</td>
|
| 542 |
|
|
<td>logarithmic</td>
|
| 543 |
|
|
</tr>
|
| 544 |
|
|
|
| 545 |
|
|
<tr>
|
| 546 |
|
|
<td>a.insert(p,t)</td>
|
| 547 |
|
|
<td>iterator</td>
|
| 548 |
|
|
<td>possibly inserts t (depending on whether a_uniq or a_eq); returns iterator
|
| 549 |
|
|
pointing to the element with key equivalent to the key of t; iterator p
|
| 550 |
|
|
is a hint pointing to where the insert should start to search</td>
|
| 551 |
|
|
<td>logarithmic in general, amortized constant if t is inserted right
|
| 552 |
|
|
after p<br />
|
| 553 |
|
|
<strong>[but see DR 233 and <a href="
|
| 554 |
|
|
http://gcc.gnu.org/onlinedocs/libstdc++/23_containers/howto.html#4">our
|
| 555 |
|
|
specific notes</a>]</strong></td>
|
| 556 |
|
|
</tr>
|
| 557 |
|
|
|
| 558 |
|
|
<tr>
|
| 559 |
|
|
<td>a.insert(i,j)</td>
|
| 560 |
|
|
<td>void</td>
|
| 561 |
|
|
<td>pre: i, j are not iterators into a. possibly inserts each element from
|
| 562 |
|
|
the range [i,j) (depending on whether a_uniq or a_eq)</td>
|
| 563 |
|
|
<td>Nlog(size()+N) where N is distance(i,j) in general</td> <!-- DR 264 -->
|
| 564 |
|
|
</tr>
|
| 565 |
|
|
|
| 566 |
|
|
<tr>
|
| 567 |
|
|
<td>a.erase(k)</td>
|
| 568 |
|
|
<td>size_type</td>
|
| 569 |
|
|
<td>erases all elements with key equivalent to k; returns number of erased
|
| 570 |
|
|
elements</td>
|
| 571 |
|
|
<td>log(size()) + count(k)</td>
|
| 572 |
|
|
</tr>
|
| 573 |
|
|
|
| 574 |
|
|
<tr>
|
| 575 |
|
|
<td>a.erase(q)</td>
|
| 576 |
|
|
<td>void</td>
|
| 577 |
|
|
<td>erases the element pointed to by q</td>
|
| 578 |
|
|
<td>amortized constant</td>
|
| 579 |
|
|
</tr>
|
| 580 |
|
|
|
| 581 |
|
|
<tr>
|
| 582 |
|
|
<td>a.erase(q1,q2)</td>
|
| 583 |
|
|
<td>void</td>
|
| 584 |
|
|
<td>erases all the elements in the range [q1,q2)</td>
|
| 585 |
|
|
<td>log(size()) + distance(q1,q2)</td>
|
| 586 |
|
|
</tr>
|
| 587 |
|
|
|
| 588 |
|
|
<tr>
|
| 589 |
|
|
<td>a.clear()</td>
|
| 590 |
|
|
<td>void</td>
|
| 591 |
|
|
<td>erases everything; post: size() == 0</td>
|
| 592 |
|
|
<td>linear</td> <!-- DR 224 -->
|
| 593 |
|
|
</tr>
|
| 594 |
|
|
|
| 595 |
|
|
<tr>
|
| 596 |
|
|
<td>a.find(k)</td>
|
| 597 |
|
|
<td>iterator; const_iterator for constant a</td>
|
| 598 |
|
|
<td>returns iterator pointing to element with key equivalent to k, or
|
| 599 |
|
|
a.end() if no such element found</td>
|
| 600 |
|
|
<td>logarithmic</td>
|
| 601 |
|
|
</tr>
|
| 602 |
|
|
|
| 603 |
|
|
<tr>
|
| 604 |
|
|
<td>a.count(k)</td>
|
| 605 |
|
|
<td>size_type</td>
|
| 606 |
|
|
<td>returns number of elements with key equivalent to k</td>
|
| 607 |
|
|
<td>log(size()) + count(k)</td>
|
| 608 |
|
|
</tr>
|
| 609 |
|
|
|
| 610 |
|
|
<tr>
|
| 611 |
|
|
<td>a.lower_bound(k)</td>
|
| 612 |
|
|
<td>iterator; const_iterator for constant a</td>
|
| 613 |
|
|
<td>returns iterator pointing to the first element with key not less than k</td>
|
| 614 |
|
|
<td>logarithmic</td>
|
| 615 |
|
|
</tr>
|
| 616 |
|
|
|
| 617 |
|
|
<tr>
|
| 618 |
|
|
<td>a.upper_bound(k)</td>
|
| 619 |
|
|
<td>iterator; const_iterator for constant a</td>
|
| 620 |
|
|
<td>returns iterator pointing to the first element with key greater than k</td>
|
| 621 |
|
|
<td>logarithmic</td>
|
| 622 |
|
|
</tr>
|
| 623 |
|
|
|
| 624 |
|
|
<tr>
|
| 625 |
|
|
<td>a.equal_range(k)</td>
|
| 626 |
|
|
<td>pair<iterator,iterator>;
|
| 627 |
|
|
pair<const_iterator, const_iterator> for constant a</td>
|
| 628 |
|
|
<td>equivalent to make_pair(a.lower_bound(k), a.upper_bound(k))</td>
|
| 629 |
|
|
<td>logarithmic</td>
|
| 630 |
|
|
</tr>
|
| 631 |
|
|
</table title="Table 69"></p></a>
|
| 632 |
|
|
|
| 633 |
|
|
|
| 634 |
|
|
<hr />
|
| 635 |
|
|
<p class="smallertext"><em>
|
| 636 |
|
|
See <a href="mainpage.html">mainpage.html</a> for copying conditions.
|
| 637 |
|
|
See <a href="http://gcc.gnu.org/libstdc++/">the libstdc++ homepage</a>
|
| 638 |
|
|
for more information.
|
| 639 |
|
|
</em></p>
|
| 640 |
|
|
|
| 641 |
|
|
|
| 642 |
|
|
</body>
|
| 643 |
|
|
</html>
|
| 644 |
|
|
|
