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Updated Examples and Recipes (markdown)

Howard Hinnant
2017-02-03 19:06:20 -05:00
parent b0a4c258a4
commit daecde5065
1 changed files with 11 additions and 4 deletions
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15
Examples-and-Recipes.md

@@ -1623,20 +1623,27 @@ Turns out not hard at all.
#include <iostream>
using fortnights =
std::chrono::duration<date::weeks::rep, std::ratio_multiply<std::ratio<2>,
date::weeks::period>>;
std::chrono::duration<date::weeks::rep,
std::ratio_multiply<std::ratio<2>, date::weeks::period>>;
using microfortnights =
std::chrono::duration<std::int64_t, std::ratio_multiply<fortnights::period,
std::micro>>;
constexpr
inline
microfortnights
operator"" _ufn(unsigned long long x)
{
return microfortnights{static_cast<microfortnights::rep>(x)};
}
int
main()
{
using namespace date;
using namespace std::chrono;
std::cout << format("%F %T\n", sys_days{nov/29/2016} + 15h + 13min +
microfortnights{35});
std::cout << format("%F %T\n", sys_days{nov/29/2016} + 15h + 13min + 35_ufn);
}
The first thing to do is build your `chrono::duration` that represents a `microfortnight`. This is best done by first building a `fortnight`, and then multiplying that by `std::micro`. This will build some weird `chrono::duration` with a period we don't really have to know, but turns out to be not that far off from a second.