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feat: ProxyAccessor constructor can now be constexpr #3757

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Nov 5, 2024
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3 changes: 2 additions & 1 deletion Core/include/Acts/EventData/ProxyAccessor.hpp
Original file line number Diff line number Diff line change
Expand Up @@ -74,7 +74,8 @@ struct ProxyAccessorBase {

/// Create the accessor from a string key
/// @param _key the key
ProxyAccessorBase(const std::string& _key) : key{hashString(_key)} {}
constexpr ProxyAccessorBase(const std::string& _key)
: key{hashString(_key)} {}

/// Access the stored key on the proxy given as an argument. Mutable version
/// @tparam proxy_t the type of the proxy
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Original file line number Diff line number Diff line change
Expand Up @@ -75,6 +75,7 @@ ACTS_DOES_NOT_COMPILE_SUITE_BEGIN(BuildFromConstRef)
(void)t;

ConstProxyAccessor<unsigned int> caccNMeasuements("nMeasurements");
static_cast<void>(caccNMeasuements); // suppressed unused warning
ACTS_DOES_NOT_COMPILE_BEGIN(ConstAccessorMutate)
caccNMeasuements(t) = 66;
ACTS_DOES_NOT_COMPILE_END()
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