Description:

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

Helper struct that inherits std::true_type if customized boxing is in place that disallows unboxing, otherwise std::false_type.

This struct is strict in the following sense: It is of std::false type, if given T is a non-customized value type TV, while the corresponding pointer type TV* type is locked - and vice versa. Note that in these two cases, the type is still not unboxable because it is locked through the corresponding other customization.

This behavior is intended and needed internally.

Note: Unboxing of a type is disabled, if method T_Boxer::Read of a specialized boxer is declared to return void.

See also: TT_IsUnboxable for an alternative that is of std::true_type exactly if a type can not be unboxed and methods Box::IsType and Box::Unbox fail to compile with that type.

Template Parameters

T	The type to check.
TEnableIf	Used for conditional specializations of this struct.

Definition at line 433 of file typetraits.inl.

Inheritance diagram for TT_IsLocked< T, TEnableIf >:

[legend]

Collaboration diagram for TT_IsLocked< T, TEnableIf >:

[legend]

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

typetraits.inl