diff options
author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
---|---|---|
committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libstdc++-v3/testsuite/ext/pb_ds/example/trie_split.cc | |
download | cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.bz2 cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.xz |
obtained gcc-4.6.4.tar.bz2 from upstream website;upstream
verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.
downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.
if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.
Diffstat (limited to 'libstdc++-v3/testsuite/ext/pb_ds/example/trie_split.cc')
-rw-r--r-- | libstdc++-v3/testsuite/ext/pb_ds/example/trie_split.cc | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/ext/pb_ds/example/trie_split.cc b/libstdc++-v3/testsuite/ext/pb_ds/example/trie_split.cc new file mode 100644 index 000000000..c08eb9c98 --- /dev/null +++ b/libstdc++-v3/testsuite/ext/pb_ds/example/trie_split.cc @@ -0,0 +1,85 @@ +// -*- C++ -*- + +// Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License as published by the Free Software +// Foundation; either version 3, or (at your option) any later +// version. + +// This library is distributed in the hope that it will be useful, but +// WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// General Public License for more details. + +// You should have received a copy of the GNU General Public License +// along with this library; see the file COPYING3. If not see +// <http://www.gnu.org/licenses/>. + + +// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. + +// Permission to use, copy, modify, sell, and distribute this software +// is hereby granted without fee, provided that the above copyright +// notice appears in all copies, and that both that copyright notice +// and this permission notice appear in supporting documentation. None +// of the above authors, nor IBM Haifa Research Laboratories, make any +// representation about the suitability of this software for any +// purpose. It is provided "as is" without express or implied +// warranty. + +/** + * @file trie_split_example.cpp + * A basic example showing how to split trie-based container objects. + */ + +/** + * This example shows how to split trie based containers, i.e., the opposite + * of a join operation. + */ + +#include <string> +#include <cassert> +#include <ext/pb_ds/assoc_container.hpp> + +using namespace std; +using namespace __gnu_pbds; + +int main() +{ + // A PATRICIA trie table mapping strings to chars. + typedef trie<string, char> map_type; + + // A map_type object. + map_type r; + + // Inserts some entries into r. + for (int i = 0; i < 100; ++ i) + r.insert(make_pair(string(i, 'a'), 'b')); + + // Now split r into a different map_type object. + + // larger_r will hold the larger values following the split. + map_type larger_r; + + // Split all elements with key larger than 'a'^1000 into larger_r. + // This is exception free. + r.split(string(1000, 'a'), larger_r); + + // Since there were no elements with key larger than 'a'^1000, r + // should be unchanged. + assert(r.size() == 100); + assert(r.begin()->first == string("")); + + // Now perform a split which actually changes the content of r. + + // Split all elements with key larger than "aaa" into larger_r. + r.split(string("aaa"), larger_r); + + assert(r.size() == 4); + assert(larger_r.begin()->first == string("aaaa")); + + return 0; +} + |