Sort a Vector of Pointers to an object, based on objects properties

[BobR]

Salt_Peter wrote in message ...

For the record, the accessor i provided is and was constant.
std::string get() const;

In your boost example you did. In your first post (the progression I was
following), it was unspecified (but, worked fine once the const is applied.).

 

[Salt_Peter]

sorry; I must have missed that. Although I am learning; there is a LOT
to learn and I miss things in syntax.

Thanks again for all your amazing efforts.

You welcome. my pleasure.

Missing the const is ok - don't worry about that.
Whats important is to understand what the compiler is telling you.
Since the Directory parameter passed to the comparator function is a
constant pointer to a constant Directory, the GetName() member function
needs to be const because otherwise the compiler wouldn't be able to
*guarentee* that the Directory parameter(s) will *not* be modified by
GetName().

const == immutable (even by accident)

That compiler is actually quite smart. Its enforcing rules depending on
how you construct the class.

 

[BobR]

(e-mail address removed) wrote in message ...

Hurray!! And there was much rejoicing!!!

That was it! I needed that const!

OY! That was painful.

Sometimes 'painful' forces memory. Think you'll ever forget 'const' again?

Thank you all for your patience!

After all that, I hope you got a decent grade!