86 lines
2.1 KiB
C++
86 lines
2.1 KiB
C++
#include <tuple>
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#include <ostd/algorithm.hh>
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#include <ostd/vector.hh>
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#include <ostd/unordered_map.hh>
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#include <ostd/range.hh>
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#include <ostd/io.hh>
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using namespace ostd;
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struct Foo {
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};
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/* implementing formatting for custom objects - external function */
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template<typename R>
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void to_format(Foo const &, R &writer, format_spec const &fs) {
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switch (fs.spec()) {
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case 'i':
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writer.put_string("Foo1");
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break;
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default:
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writer.put_string("Foo2");
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break;
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}
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}
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struct Bar {
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/* implementing formatting for custom objects - method */
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template<typename R>
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void to_format(R &writer, format_spec const &fs) const {
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switch (fs.spec()) {
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case 'i':
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writer.put_string("Bar1");
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break;
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default:
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writer.put_string("Bar2");
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break;
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}
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}
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};
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int main() {
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std::vector<int> x = { 5, 10, 15, 20 };
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writefln("[%(%s|%)]", x);
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int y[] = { 2, 4, 8, 16, 32 };
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writefln("{ %(%s, %) }", y);
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writefln("[\n%([ %(%s, %) ]%|,\n%)\n]", map(range(10), [](int v) {
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return range(v + 1);
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}));
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std::unordered_map<std::string, int> m = {
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{ "foo", 5 },
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{ "bar", 10 },
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{ "baz", 15 }
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};
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/* strings and chars are automatically escaped */
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writefln("{ %#(%s: %d, %) }", m);
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/* can override escaping with the - flag,
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* # flag expands the element into multiple values
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*/
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writefln("{ %-#(%s: %d, %) }", m);
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/* tuple format test */
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std::tuple<int, float, char const *> xt[] = {
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std::make_tuple(5, 3.14f, "foo"),
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std::make_tuple(3, 1.23f, "bar"),
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std::make_tuple(9, 8.66f, "baz")
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};
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writefln("[ %#(<%d|%f|%s>%|, %) ]", xt);
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/* custom format */
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writefln("%s", Foo{});
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writefln("%i", Foo{});
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/* custom format via method */
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writefln("%s", Bar{});
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writefln("%i", Bar{});
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/* format into string */
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auto s = appender<std::string>();
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format(s, "hello %s", "world");
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writeln(s.get());
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}
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