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f613cc4088
The assignment was superfluous in general case and incorrect in specific case when the algorithm was given a lambda expression. The copy assignment operator is defined as deleted for lambda expressions. Add minimal test for for_each_pixel algorithm to verify it compiles with lambda expression.
33 lines
734 B
C++
33 lines
734 B
C++
//
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// Copyright 2018 Mateusz Loskot <mateusz at loskot dot net>
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//
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// Distributed under the Boost Software License, Version 1.0
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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//
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#include <boost/gil/algorithm.hpp>
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#include <boost/gil/image.hpp>
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#include <boost/core/lightweight_test.hpp>
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namespace gil = boost::gil;
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void test_lambda_expression()
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{
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gil::gray8_pixel_t const gray128(128);
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gil::gray8_image_t image(2, 2, gray128);
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int sum{0};
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gil::for_each_pixel(gil::view(image), [&sum](gil::gray8_pixel_t& p) {
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sum += gil::at_c<0>(p);
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});
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BOOST_TEST(sum == 2 * 2 * 128);
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}
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int main()
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{
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test_lambda_expression();
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return boost::report_errors();
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}
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