26 lines
600 B
C++
26 lines
600 B
C++
/// @file
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/// This file enables access to std::optional
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/// for use with systems that have it under the experimental namespace
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#pragma once
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// Find out where std::optional is:
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#if defined(__APPLE__) // XCode has the header in experimental namespace
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#define NORMAL_OPTIONAL 0
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#else // By default assume supported.
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#define NORMAL_OPTIONAL 1
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#endif
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#if NORMAL_OPTIONAL
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#include <optional>
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#else
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#include <experimental/optional>
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namespace std
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{
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using std::experimental::nullopt;
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using std::experimental::optional;
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}
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#endif
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#undef NORMAL_OPTIONAL // Not needed any more, don't make it public.
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