util::with_const_as< Base, Key > Struct Template Reference

Trait with type Base, plus the constantness as in Key. More...

#include <MetaUtils.h>

Inheritance diagram for util::with_const_as< Base, Key >:

Additional Inherited Members
Public Types inherited from util::details::with_const_as_impl< Base, std::remove_reference_t< Key > >
using	type = std::remove_const_t< Base >

Detailed Description

template<typename Base, typename Key>
struct util::with_const_as< Base, Key >

Trait with type Base, plus the constantness as in Key.

Template Parameters

Base	the basic type being returned
Key	a type expressing the constantness wanted for Base

The type member of this trait is:

• the type Base with constantness removed, if Key is non-constant type
• the type Base with constantness added, if Key is a constant type

This trait passes through references. Both Base and Key are treated as they were no references (e.g. a int const& is treated as a int const). The referenceness of the type in the trait is the same as the one of Base.

Therefore, for example:

• with_const_as<int const, double> yields int;
• with_const_as<int const, double const> yields int const;
• with_const_as<int const&, double> yields int&;
• with_const_as<int, double const&> yields int const.

R-value references are likewise taken into account.

Definition at line 540 of file MetaUtils.h.

---

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

• larcorealg/larcorealg/CoreUtils/MetaUtils.h