IsFShaderKeyGeneratorKnownType< T, decltype(std::declval< FShaderKeyGenerator >().Append(std::declval< T >()), 0)>

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Template override for struct used in std::enable_if to report whether a type is a FShaderKeyGenerator known type with an Append member function. This template override provides the true value for known types.

Syntax

namespace IsFShaderKeyGeneratorKnownType< T, decltype(std  
{  
    namespace declval< FShaderKeyGenerator >().Append(std  
    {  
        template<typename T>  
        struct IsFShaderKeyGeneratorKnownType< T, decltype(std::declval< FShaderKeyGenerator >().Append(std::declval< T >()), 0)> : public std::true_type  
    }  
}  
Copy full snippet

namespace IsFShaderKeyGeneratorKnownType< T, decltype(std {     namespace declval< FShaderKeyGenerator >().Append(std     {         template<typename T>         struct IsFShaderKeyGeneratorKnownType< T, decltype(std::declval< FShaderKeyGenerator >().Append(std::declval< T >()), 0)> : public std::true_type     } }

Inheritance Hierarchy

• std::true_type → IsFShaderKeyGeneratorKnownType< T, decltype(std::declval< FShaderKeyGenerator >().Append(std::declval< T >()), 0)>