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1 | [/ | |
2 | Copyright 2010 Neil Groves | |
3 | Distributed under the Boost Software License, Version 1.0. | |
4 | (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
5 | /] | |
6 | [section:filtered filtered] | |
7 | ||
8 | [table | |
9 | [[Syntax] [Code]] | |
10 | [[Pipe] [`rng | boost::adaptors::filtered(pred)`]] | |
11 | [[Function] [`boost::adaptors::filter(rng, pred)`]] | |
12 | ] | |
13 | ||
14 | * [*Precondition:] The `value_type` of the range is convertible to the argument type of `pred`. | |
15 | * [*Postcondition:] For all elements `[x]` in the returned range, `pred(x)` is `true`. | |
16 | * [*Throws:] Whatever the copy constructor of `pred` might throw. | |
17 | * [*Range Category:] __singlepass_range__ | |
18 | * [*Range Return Type:] `boost::filtered_range<decltype(rng)>` | |
19 | * [*Returned Range Category:] The minimum of the range category of `rng` and __bidirectional_range__ | |
20 | ||
21 | [section:filtered_example filtered example] | |
22 | [import ../../../test/adaptor_test/filtered_example.cpp] | |
23 | [filtered_example] | |
24 | [endsect] | |
25 | ||
26 | This would produce the output: | |
27 | `` | |
28 | 2,4,6,8, | |
29 | `` | |
30 | [endsect] | |
31 | ||
32 |