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#include <fstream>
#include <seqan3/std/filesystem>
struct write_file_dummy_struct
{
write_file_dummy_struct()
{
auto file_raw = R"////![sam_file]";
std::ofstream file{std::filesystem::temp_directory_path()/"my.sam"};
std::string str{file_raw};
file << str.substr(1); // skip first newline
}
};
write_file_dummy_struct go{};
//![solution]
#include <seqan3/core/debug_stream.hpp>
#include <seqan3/io/alignment_file/all.hpp>
#include <seqan3/range/views/get.hpp>
#include <seqan3/std/filesystem>
#include <seqan3/std/ranges>
int main()
{
std::filesystem::path tmp_dir = std::filesystem::temp_directory_path(); // get the temp directory
seqan3::alignment_file_input fin{tmp_dir/"my.sam", seqan3::fields<seqan3::field::mapq>{}};
double sum{};
size_t c{};
std::ranges::for_each(fin.begin(), fin.end(), [&sum, &c] (auto & rec)
{
sum += seqan3::get<seqan3::field::mapq>(rec);
++c;
});
seqan3::debug_stream << "Average: " << (sum/c) << '\n';
}
//![solution]
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