tmp/tmp852vvzvh/{from.md → to.md}
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| 1 |
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#### Class `nonexistent_local_time` <a id="time.zone.exception.nonexist">[[time.zone.exception.nonexist]]</a>
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``` cpp
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namespace std::chrono {
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class nonexistent_local_time : public runtime_error {
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public:
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template<class Duration>
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nonexistent_local_time(const local_time<Duration>& tp, const local_info& i);
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};
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}
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```
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`nonexistent_local_time` is thrown when an attempt is made to convert a
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non-existent `local_time` to a `sys_time` without specifying
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`choose::earliest` or `choose::latest`.
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``` cpp
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template<class Duration>
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nonexistent_local_time(const local_time<Duration>& tp, const local_info& i);
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```
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*Preconditions:* `i.result == local_info::nonexistent` is `true`.
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*Effects:* Initializes the base class with a sequence of `char`
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equivalent to that produced by `os.str()` initialized as shown below:
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``` cpp
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ostringstream os;
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os << tp << " is in a gap between\n"
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<< local_seconds{i.first.end.time_since_epoch()} + i.first.offset << ' '
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<< i.first.abbrev << " and\n"
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<< local_seconds{i.second.begin.time_since_epoch()} + i.second.offset << ' '
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<< i.second.abbrev
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<< " which are both equivalent to\n"
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<< i.first.end << " UTC";
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```
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[*Example 1*:
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``` cpp
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#include <chrono>
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#include <iostream>
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int main() {
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using namespace std::chrono;
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try {
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auto zt = zoned_time{"America/New_York",
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local_days{Sunday[2]/March/2016} + 2h + 30min};
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} catch (const nonexistent_local_time& e) {
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std::cout << e.what() << '\n';
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}
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}
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```
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Produces the output:
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``` text
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2016-03-13 02:30:00 is in a gap between
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2016-03-13 02:00:00 EST and
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2016-03-13 03:00:00 EDT which are both equivalent to
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2016-03-13 07:00:00 UTC
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```
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— *end example*]
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