TT_IsUnboxable< T, TEnableIf > Struct Template Reference

Description:

template<typename T, typename TEnableIf = void>
struct alib::boxing::TT_IsUnboxable< T, TEnableIf >

This type is of std::true_type exactly if a type cannot be unboxed and methods Box::IsType and Box::Unbox will fail to compile with that type.

With default boxing, one of the types T and T* are unboxable (depending on value type size and whether the type is copy constructible and trivially destructible).

If custom boxing for either or both of types T and T* is in place, then the given type is not unboxable if:

• customization is not in place for the version passed (value or pointer).
• customization is in place for the given type, but TT_IsLocked is of std::true_type.
• The type is mapped to detail::TNotBoxable.

See also

Helpers TT_IsCustomized, TT_IsLocked and TT_IsNotBoxable.

Template Parameters

T	The type to check.
TEnableIf	Helper-type for implementing specializations of this struct.

Definition at line 475 of file typetraits.inl.

Inheritance diagram for TT_IsUnboxable< T, TEnableIf >:

Collaboration diagram for TT_IsUnboxable< T, TEnableIf >:

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The documentation for this struct was generated from the following file:

• typetraits.inl