Re: How to create a class that casting to int explicitly only?
On Jul 30, 7:46 pm, blargg <blargg....@gishpuppy.com> wrote:
In article
<e23c84a3-9bfa-4c5d-87f2-eed0cb157...@a2g2000prm.googlegroups.com>,
Tao Wang <Dancef...@gmail.com> wrote:
...
class Data{
...
public:
operator int() {...};
};
So, I can use the class like,
Data d(1234);
int a = d;
However, what I really want is that user of class Data have explicitly
cast it to int.
that is, user should write the code like:
int a = (int) d;
other than:
int a = d;
How can I make the cast to int explicitly only?
class Data{
...
public:
int to_int() {...};
};
Data d(1234);
int a = (int) d; // error
int b = d.to_int(); // OK
This is similar to what I expected, however, I don't want user to
remember the interface to_int(). What I expect is that the code:
Data d(1234);
int a = (int) d; // OK
should be correct, that is, Data can convert to int, however, I don't
want it convert implicitly.
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