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Misc: add join function
author David Demelier <markand@malikania.fr>
date Wed, 29 Jun 2016 19:12:10 +0200
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children c79a501782b0
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569:b1c4933afcd0 570:dcef88285f8c
1 /*
2 * join.hpp -- join lists into a string
3 *
4 * Copyright (c) 2013-2016 David Demelier <markand@malikania.fr>
5 *
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 /**
20 * Join values by a separator and return a string.
21 *
22 * \param first the first iterator
23 * \param last the last iterator
24 * \param delim the optional delimiter
25 * \return the string
26 */
27 template <typename InputIt, typename DelimType = char>
28 std::string join(InputIt first, InputIt last, DelimType delim = ':')
29 {
30 std::ostringstream oss;
31
32 if (first != last) {
33 oss << *first;
34
35 while (++first != last)
36 oss << delim << *first;
37 }
38
39 return oss.str();
40 }
41
42 /**
43 * Convenient overload.
44 *
45 * \param list the initializer list
46 * \param delim the delimiter
47 * \return the string
48 */
49 template <typename T, typename DelimType = char>
50 inline std::string join(std::initializer_list<T> list, DelimType delim = ':')
51 {
52 return join(list.begin(), list.end(), delim);
53 }