Shows how to use xtd::delegate class.
#define TRACE
#include <xtd/console>
#include <xtd/cdebug>
#include <xtd/ctrace>
#include <xtd/delegate>
#include <xtd/environment>
using writer = delegate<void(const string& str)>;
void write_debug(const string& str) {
cdebug << str << environment::new_line;
}
class tracer {
public:
void write_trace(const string& str) {
ctrace << str << environment::new_line;
}
void write_trace2(const string& str) {
ctrace <<
"2 " << str << environment::new_line;
}
};
auto main() -> int {
write += [](
const string & str) {
console::out << str << environment::new_line;
};
console::error << str << environment::new_line;
};
write += {tracer(), &tracer::write_trace};
write += {
t, &tracer::write_trace2};
write -= {
t, &tracer::write_trace2};
struct writer {
writer() = default;
void operator()(const string& str) {
console::write_line(str);
}
};
}
std::ostream ctrace(nullptr)
Provides an std::ostream for xtd::diagnostics::trace.
@ write
Write access to the file. Data can be written to the file. Combine with Read for read/write access.
The xtd namespace contains all fundamental classes to access Hardware, Os, System,...
Definition xtd_about_box.h:10