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 26This would produce the output: 27`` 282,4,6,8, 29`` 30[endsect] 31 32 33