CODEWITHSUNDEEP
c++c++11c-preprocessornoncopyabledeleted-functions
quantum_well
quantum_well

Reputation: 979

Macro to make class noncopyable

Is there any problem with following macro that makes a class non-copyable?

#define PREVENT_COPY(class_name) \
class_name(const class_name&) = delete;\
class_name& operator=(const class_name&) = delete;

class Foo
{
public:
    PREVENT_COPY(Foo)

    // .......
};

Upvotes: 0

Views: 890

Answers (1)

abelenky
abelenky

Reputation: 64710

Typically, macros are generally constructed so they require a semi-colon at the end of the line, just like normal statements.

Therefore, I suggest:

#define PREVENT_COPY(class_name) class_name(const class_name&) = delete;\
                                 class_name& operator=(const class_name&) = delete

Usage:

class Foo
{
public:
    PREVENT_COPY(Foo); // Semi-colon required.

    // .......
};

Upvotes: 2

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