Owned caches: average finds per cache per day

cache.cpp

@@ -84,6 +84,8 @@ void Cache::set_date_hidden(const std::tm& t) {
 
 	std::strftime(tmp, 20, "%F", &date_hidden_tm);
 	date_hidden = tmp;
+
+	age_now = (std::time(nullptr) - date_hidden_t) / (60 * 60 * 24);
 }
 
 float cache_distance(const Cache& a, const Cache& b) {

cache.h

@@ -83,6 +83,7 @@ public:
 	std::string date;
 	std::string date_hidden;
 	int age_when_found = -1;
+	int age_now = -1;
 
 	void set_date(const std::tm& t);
 	void set_date_hidden(const std::tm& t);

geostat.cpp

@@ -10,6 +10,7 @@
 #include <iostream>
 #include <iomanip>
 #include <algorithm>
+#include <numeric>
 #include <unistd.h>
 
 void show_usage() {
@@ -787,6 +788,8 @@ int main(int argc, char** argv) {
 		std::cout << "Number of caches created: <span class=\"value\">" << cc.size() << "</span><br>\n";
 		std::cout << "Number of caches that are disabled: <span class=\"value\">" << std::count_if(cc.begin(), cc.end(), [&](auto& a) { return a.status == disabled; }) << "</span><br>\n";
 		std::cout << "Number of caches that are archived: <span class=\"value\">" << std::count_if(cc.begin(), cc.end(), [&](auto& a) { return a.status == archived; }) << "</span><br>\n";
+		std::cout << "Average finds per cache per day: <span class=\"value\">" << std::setprecision(3) << std::accumulate(cc.begin(), cc.end(), 0., [&](const float& a, const Cache& b) { return std::move(a) + 1.0 * b.founds / b.age_now; }) / cc.size() << "</span><br>\n";
+		std::cout << std::resetiosflags(std::cout.flags());
 		std::cout << "</div>\n";
 
 		short y_min = std::min_element(cc.begin(), cc.end(), [&](const Cache& a, const Cache& b) { return a.date_hidden_tm.tm_year < b.date_hidden_tm.tm_year; })->date_hidden_tm.tm_year;