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Use a struct WorstMatch instead of varargs for the fallback option_add

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varargs cannot handle non pod types.
This commit is contained in:
Maxime Coste 2016-12-30 06:43:32 +00:00
parent 4f98677642
commit ea6994dd3b
1 changed files with 3 additions and 1 deletions
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4
src/option_types.hh
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@ -214,7 +214,9 @@ inline bool option_add(StronglyTypedNumber<RealType, ValueType>& opt,
return val != 0; return val != 0;
} }
inline bool option_add(...) struct WorstMatch { template<typename T> WorstMatch(T&&) {} };
inline bool option_add(WorstMatch, StringView str)
{ {
throw runtime_error("no add operation supported for this option type"); throw runtime_error("no add operation supported for this option type");
} }