question about new and delete
I am currently learning about new and delete objects on the heap. many of the examples are classes calling new in the constructor. i was under the impression you shouldnt call new in a constructor because new can fail. am i being paranoid or is it ok.
You are perfectly safe.
If something goes wrong in the constructor you should throw an exception. By default, 'new' throws an exception on failure. Hence, things are fine --your constructor will throw an exception if new fails.
The only thing to be aware of is that you should NEVER (and this really is a NEVER) throw an exception in a destructor. Read more at the C++ FAQ Lite (sections 17.2 and 17.3).
Hope this helps.
If something goes wrong in the constructor you should throw an exception. By default, 'new' throws an exception on failure. Hence, things are fine --your constructor will throw an exception if new fails.
The only thing to be aware of is that you should NEVER (and this really is a NEVER) throw an exception in a destructor. Read more at the C++ FAQ Lite (sections 17.2 and 17.3).
Hope this helps.
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