1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>ip::basic_resolver::results_type</title> 5<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../../boost_asio.html" title="Boost.Asio"> 8<link rel="up" href="../ip__basic_resolver.html" title="ip::basic_resolver"> 9<link rel="prev" href="resolve/overload12.html" title="ip::basic_resolver::resolve (12 of 12 overloads)"> 10<link rel="next" href="v4_mapped.html" title="ip::basic_resolver::v4_mapped"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../boost.png"></td> 15<td align="center"><a href="../../../../../index.html">Home</a></td> 16<td align="center"><a 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title="ip::basic_resolver::results_type">ip::basic_resolver::results_type</a> 28</h4></div></div></div> 29<p> 30 <a class="indexterm" name="boost_asio.indexterm.ip__basic_resolver.results_type"></a> 31The 32 results type. 33 </p> 34<pre class="programlisting">typedef basic_resolver_results< InternetProtocol > results_type; 35</pre> 36<h6> 37<a name="boost_asio.reference.ip__basic_resolver.results_type.h0"></a> 38 <span class="phrase"><a name="boost_asio.reference.ip__basic_resolver.results_type.types"></a></span><a class="link" href="results_type.html#boost_asio.reference.ip__basic_resolver.results_type.types">Types</a> 39 </h6> 40<div class="informaltable"><table class="table"> 41<colgroup> 42<col> 43<col> 44</colgroup> 45<thead><tr> 46<th> 47 <p> 48 Name 49 </p> 50 </th> 51<th> 52 <p> 53 Description 54 </p> 55 </th> 56</tr></thead> 57<tbody> 58<tr> 59<td> 60 <p> 61 <a class="link" href="../ip__basic_resolver_results/const_iterator.html" title="ip::basic_resolver_results::const_iterator"><span class="bold"><strong>const_iterator</strong></span></a> 62 </p> 63 </td> 64<td> 65 <p> 66 The type of an iterator into the range. 67 </p> 68 </td> 69</tr> 70<tr> 71<td> 72 <p> 73 <a class="link" href="../ip__basic_resolver_results/const_reference.html" title="ip::basic_resolver_results::const_reference"><span class="bold"><strong>const_reference</strong></span></a> 74 </p> 75 </td> 76<td> 77 <p> 78 The type of a const reference to a value in the range. 79 </p> 80 </td> 81</tr> 82<tr> 83<td> 84 <p> 85 <a class="link" href="../ip__basic_resolver_results/difference_type.html" title="ip::basic_resolver_results::difference_type"><span class="bold"><strong>difference_type</strong></span></a> 86 </p> 87 </td> 88<td> 89 <p> 90 Type used to represent the distance between two iterators in 91 the range. 92 </p> 93 </td> 94</tr> 95<tr> 96<td> 97 <p> 98 <a class="link" href="../ip__basic_resolver_results/endpoint_type.html" title="ip::basic_resolver_results::endpoint_type"><span class="bold"><strong>endpoint_type</strong></span></a> 99 </p> 100 </td> 101<td> 102 <p> 103 The endpoint type associated with the results. 104 </p> 105 </td> 106</tr> 107<tr> 108<td> 109 <p> 110 <a class="link" href="../ip__basic_resolver_results/iterator.html" title="ip::basic_resolver_results::iterator"><span class="bold"><strong>iterator</strong></span></a> 111 </p> 112 </td> 113<td> 114 <p> 115 The type of an iterator into the range. 116 </p> 117 </td> 118</tr> 119<tr> 120<td> 121 <p> 122 <a class="link" href="../ip__basic_resolver_results/iterator_category.html" title="ip::basic_resolver_results::iterator_category"><span class="bold"><strong>iterator_category</strong></span></a> 123 </p> 124 </td> 125<td> 126 <p> 127 The iterator category. 128 </p> 129 </td> 130</tr> 131<tr> 132<td> 133 <p> 134 <a class="link" href="../ip__basic_resolver_results/pointer.html" title="ip::basic_resolver_results::pointer"><span class="bold"><strong>pointer</strong></span></a> 135 </p> 136 </td> 137<td> 138 <p> 139 The type of the result of applying operator->() to the iterator. 140 </p> 141 </td> 142</tr> 143<tr> 144<td> 145 <p> 146 <a class="link" href="../ip__basic_resolver_results/protocol_type.html" title="ip::basic_resolver_results::protocol_type"><span class="bold"><strong>protocol_type</strong></span></a> 147 </p> 148 </td> 149<td> 150 <p> 151 The protocol type associated with the results. 152 </p> 153 </td> 154</tr> 155<tr> 156<td> 157 <p> 158 <a class="link" href="../ip__basic_resolver_results/reference.html" title="ip::basic_resolver_results::reference"><span class="bold"><strong>reference</strong></span></a> 159 </p> 160 </td> 161<td> 162 <p> 163 The type of a non-const reference to a value in the range. 164 </p> 165 </td> 166</tr> 167<tr> 168<td> 169 <p> 170 <a class="link" href="../ip__basic_resolver_results/size_type.html" title="ip::basic_resolver_results::size_type"><span class="bold"><strong>size_type</strong></span></a> 171 </p> 172 </td> 173<td> 174 <p> 175 Type used to represent a count of the elements in the range. 176 </p> 177 </td> 178</tr> 179<tr> 180<td> 181 <p> 182 <a class="link" href="../ip__basic_resolver_results/value_type.html" title="ip::basic_resolver_results::value_type"><span class="bold"><strong>value_type</strong></span></a> 183 </p> 184 </td> 185<td> 186 <p> 187 The type of a value in the results range. 188 </p> 189 </td> 190</tr> 191</tbody> 192</table></div> 193<h6> 194<a name="boost_asio.reference.ip__basic_resolver.results_type.h1"></a> 195 <span class="phrase"><a name="boost_asio.reference.ip__basic_resolver.results_type.member_functions"></a></span><a class="link" href="results_type.html#boost_asio.reference.ip__basic_resolver.results_type.member_functions">Member 196 Functions</a> 197 </h6> 198<div class="informaltable"><table class="table"> 199<colgroup> 200<col> 201<col> 202</colgroup> 203<thead><tr> 204<th> 205 <p> 206 Name 207 </p> 208 </th> 209<th> 210 <p> 211 Description 212 </p> 213 </th> 214</tr></thead> 215<tbody> 216<tr> 217<td> 218 <p> 219 <a class="link" href="../ip__basic_resolver_results/basic_resolver_results.html" title="ip::basic_resolver_results::basic_resolver_results"><span class="bold"><strong>basic_resolver_results</strong></span></a> <span class="silver">[constructor]</span> 220 </p> 221 </td> 222<td> 223 <p> 224 Default constructor creates an empty range. <br> <span class="silver"> —</span><br> Copy 225 constructor. <br> <span class="silver"> —</span><br> Move constructor. 226 </p> 227 </td> 228</tr> 229<tr> 230<td> 231 <p> 232 <a class="link" href="../ip__basic_resolver_results/begin.html" title="ip::basic_resolver_results::begin"><span class="bold"><strong>begin</strong></span></a> 233 </p> 234 </td> 235<td> 236 <p> 237 Obtain a begin iterator for the results range. 238 </p> 239 </td> 240</tr> 241<tr> 242<td> 243 <p> 244 <a class="link" href="../ip__basic_resolver_results/cbegin.html" title="ip::basic_resolver_results::cbegin"><span class="bold"><strong>cbegin</strong></span></a> 245 </p> 246 </td> 247<td> 248 <p> 249 Obtain a begin iterator for the results range. 250 </p> 251 </td> 252</tr> 253<tr> 254<td> 255 <p> 256 <a class="link" href="../ip__basic_resolver_results/cend.html" title="ip::basic_resolver_results::cend"><span class="bold"><strong>cend</strong></span></a> 257 </p> 258 </td> 259<td> 260 <p> 261 Obtain an end iterator for the results range. 262 </p> 263 </td> 264</tr> 265<tr> 266<td> 267 <p> 268 <a class="link" href="../ip__basic_resolver_results/empty.html" title="ip::basic_resolver_results::empty"><span class="bold"><strong>empty</strong></span></a> 269 </p> 270 </td> 271<td> 272 <p> 273 Determine whether the results range is empty. 274 </p> 275 </td> 276</tr> 277<tr> 278<td> 279 <p> 280 <a class="link" href="../ip__basic_resolver_results/end.html" title="ip::basic_resolver_results::end"><span class="bold"><strong>end</strong></span></a> 281 </p> 282 </td> 283<td> 284 <p> 285 Obtain an end iterator for the results range. 286 </p> 287 </td> 288</tr> 289<tr> 290<td> 291 <p> 292 <a class="link" href="../ip__basic_resolver_results/max_size.html" title="ip::basic_resolver_results::max_size"><span class="bold"><strong>max_size</strong></span></a> 293 </p> 294 </td> 295<td> 296 <p> 297 Get the maximum number of entries permitted in a results range. 298 </p> 299 </td> 300</tr> 301<tr> 302<td> 303 <p> 304 <a class="link" href="../ip__basic_resolver_results/operator__star_.html" title="ip::basic_resolver_results::operator *"><span class="bold"><strong>operator *</strong></span></a> 305 </p> 306 </td> 307<td> 308 <p> 309 Dereference an iterator. 310 </p> 311 </td> 312</tr> 313<tr> 314<td> 315 <p> 316 <a class="link" href="../ip__basic_resolver_results/operator_plus__plus_.html" title="ip::basic_resolver_results::operator++"><span class="bold"><strong>operator++</strong></span></a> 317 </p> 318 </td> 319<td> 320 <p> 321 Increment operator (prefix). <br> <span class="silver"> —</span><br> Increment operator 322 (postfix). 323 </p> 324 </td> 325</tr> 326<tr> 327<td> 328 <p> 329 <a class="link" href="../ip__basic_resolver_results/operator_arrow_.html" title="ip::basic_resolver_results::operator->"><span class="bold"><strong>operator-></strong></span></a> 330 </p> 331 </td> 332<td> 333 <p> 334 Dereference an iterator. 335 </p> 336 </td> 337</tr> 338<tr> 339<td> 340 <p> 341 <a class="link" href="../ip__basic_resolver_results/operator_eq_.html" title="ip::basic_resolver_results::operator="><span class="bold"><strong>operator=</strong></span></a> 342 </p> 343 </td> 344<td> 345 <p> 346 Assignment operator. <br> <span class="silver"> —</span><br> Move-assignment operator. 347 </p> 348 </td> 349</tr> 350<tr> 351<td> 352 <p> 353 <a class="link" href="../ip__basic_resolver_results/size.html" title="ip::basic_resolver_results::size"><span class="bold"><strong>size</strong></span></a> 354 </p> 355 </td> 356<td> 357 <p> 358 Get the number of entries in the results range. 359 </p> 360 </td> 361</tr> 362<tr> 363<td> 364 <p> 365 <a class="link" href="../ip__basic_resolver_results/swap.html" title="ip::basic_resolver_results::swap"><span class="bold"><strong>swap</strong></span></a> 366 </p> 367 </td> 368<td> 369 <p> 370 Swap the results range with another. 371 </p> 372 </td> 373</tr> 374</tbody> 375</table></div> 376<h6> 377<a name="boost_asio.reference.ip__basic_resolver.results_type.h2"></a> 378 <span class="phrase"><a name="boost_asio.reference.ip__basic_resolver.results_type.protected_member_functions"></a></span><a class="link" href="results_type.html#boost_asio.reference.ip__basic_resolver.results_type.protected_member_functions">Protected 379 Member Functions</a> 380 </h6> 381<div class="informaltable"><table class="table"> 382<colgroup> 383<col> 384<col> 385</colgroup> 386<thead><tr> 387<th> 388 <p> 389 Name 390 </p> 391 </th> 392<th> 393 <p> 394 Description 395 </p> 396 </th> 397</tr></thead> 398<tbody> 399<tr> 400<td> 401 <p> 402 <a class="link" href="../ip__basic_resolver_results/dereference.html" title="ip::basic_resolver_results::dereference"><span class="bold"><strong>dereference</strong></span></a> 403 </p> 404 </td> 405<td> 406 </td> 407</tr> 408<tr> 409<td> 410 <p> 411 <a class="link" href="../ip__basic_resolver_results/equal.html" title="ip::basic_resolver_results::equal"><span class="bold"><strong>equal</strong></span></a> 412 </p> 413 </td> 414<td> 415 </td> 416</tr> 417<tr> 418<td> 419 <p> 420 <a class="link" href="../ip__basic_resolver_results/increment.html" title="ip::basic_resolver_results::increment"><span class="bold"><strong>increment</strong></span></a> 421 </p> 422 </td> 423<td> 424 </td> 425</tr> 426</tbody> 427</table></div> 428<h6> 429<a name="boost_asio.reference.ip__basic_resolver.results_type.h3"></a> 430 <span class="phrase"><a name="boost_asio.reference.ip__basic_resolver.results_type.protected_data_members"></a></span><a class="link" href="results_type.html#boost_asio.reference.ip__basic_resolver.results_type.protected_data_members">Protected 431 Data Members</a> 432 </h6> 433<div class="informaltable"><table class="table"> 434<colgroup> 435<col> 436<col> 437</colgroup> 438<thead><tr> 439<th> 440 <p> 441 Name 442 </p> 443 </th> 444<th> 445 <p> 446 Description 447 </p> 448 </th> 449</tr></thead> 450<tbody> 451<tr> 452<td> 453 <p> 454 <a class="link" href="../ip__basic_resolver_results/index_.html" title="ip::basic_resolver_results::index_"><span class="bold"><strong>index_</strong></span></a> 455 </p> 456 </td> 457<td> 458 </td> 459</tr> 460<tr> 461<td> 462 <p> 463 <a class="link" href="../ip__basic_resolver_results/values_.html" title="ip::basic_resolver_results::values_"><span class="bold"><strong>values_</strong></span></a> 464 </p> 465 </td> 466<td> 467 </td> 468</tr> 469</tbody> 470</table></div> 471<h6> 472<a name="boost_asio.reference.ip__basic_resolver.results_type.h4"></a> 473 <span class="phrase"><a name="boost_asio.reference.ip__basic_resolver.results_type.friends"></a></span><a class="link" href="results_type.html#boost_asio.reference.ip__basic_resolver.results_type.friends">Friends</a> 474 </h6> 475<div class="informaltable"><table class="table"> 476<colgroup> 477<col> 478<col> 479</colgroup> 480<thead><tr> 481<th> 482 <p> 483 Name 484 </p> 485 </th> 486<th> 487 <p> 488 Description 489 </p> 490 </th> 491</tr></thead> 492<tbody> 493<tr> 494<td> 495 <p> 496 <a class="link" href="../ip__basic_resolver_results/operator_not__eq_.html" title="ip::basic_resolver_results::operator!="><span class="bold"><strong>operator!=</strong></span></a> 497 </p> 498 </td> 499<td> 500 <p> 501 Test two iterators for inequality. 502 </p> 503 </td> 504</tr> 505<tr> 506<td> 507 <p> 508 <a class="link" href="../ip__basic_resolver_results/operator_eq__eq_.html" title="ip::basic_resolver_results::operator=="><span class="bold"><strong>operator==</strong></span></a> 509 </p> 510 </td> 511<td> 512 <p> 513 Test two iterators for equality. 514 </p> 515 </td> 516</tr> 517</tbody> 518</table></div> 519<p> 520 The <a class="link" href="../ip__basic_resolver_results.html" title="ip::basic_resolver_results"><code class="computeroutput">ip::basic_resolver_results</code></a> 521 class template is used to define a range over the results returned by a 522 resolver. 523 </p> 524<p> 525 The iterator's value_type, obtained when a results iterator is dereferenced, 526 is: 527 </p> 528<pre class="programlisting">const basic_resolver_entry<InternetProtocol> 529</pre> 530<h6> 531<a name="boost_asio.reference.ip__basic_resolver.results_type.h5"></a> 532 <span class="phrase"><a name="boost_asio.reference.ip__basic_resolver.results_type.remarks"></a></span><a class="link" href="results_type.html#boost_asio.reference.ip__basic_resolver.results_type.remarks">Remarks</a> 533 </h6> 534<p> 535 For backward compatibility, <a class="link" href="../ip__basic_resolver_results.html" title="ip::basic_resolver_results"><code class="computeroutput">ip::basic_resolver_results</code></a> 536 is derived from <a class="link" href="../ip__basic_resolver_iterator.html" title="ip::basic_resolver_iterator"><code class="computeroutput">ip::basic_resolver_iterator</code></a>. 537 This derivation is deprecated. 538 </p> 539<h6> 540<a name="boost_asio.reference.ip__basic_resolver.results_type.h6"></a> 541 <span class="phrase"><a name="boost_asio.reference.ip__basic_resolver.results_type.thread_safety"></a></span><a class="link" href="results_type.html#boost_asio.reference.ip__basic_resolver.results_type.thread_safety">Thread 542 Safety</a> 543 </h6> 544<p> 545 <span class="emphasis"><em>Distinct</em></span> <span class="emphasis"><em>objects:</em></span> Safe. 546 </p> 547<p> 548 <span class="emphasis"><em>Shared</em></span> <span class="emphasis"><em>objects:</em></span> Unsafe. 549 </p> 550<h6> 551<a name="boost_asio.reference.ip__basic_resolver.results_type.h7"></a> 552 <span class="phrase"><a name="boost_asio.reference.ip__basic_resolver.results_type.requirements"></a></span><a class="link" href="results_type.html#boost_asio.reference.ip__basic_resolver.results_type.requirements">Requirements</a> 553 </h6> 554<p> 555 <span class="emphasis"><em>Header: </em></span><code class="literal">boost/asio/ip/basic_resolver.hpp</code> 556 </p> 557<p> 558 <span class="emphasis"><em>Convenience header: </em></span><code class="literal">boost/asio.hpp</code> 559 </p> 560</div> 561<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 562<td align="left"></td> 563<td align="right"><div class="copyright-footer">Copyright © 2003-2020 Christopher M. 564 Kohlhoff<p> 565 Distributed under the Boost Software License, Version 1.0. (See accompanying 566 file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) 567 </p> 568</div></td> 569</tr></table> 570<hr> 571<div class="spirit-nav"> 572<a accesskey="p" href="resolve/overload12.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../ip__basic_resolver.html"><img src="../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../boost_asio.html"><img src="../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="v4_mapped.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> 573</div> 574</body> 575</html> 576
