Constructors/Destructors returning value?

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2 total messages Started by Ralph Gonzalez Mon, 17 Sep 1990 15:06

#515

Author: Ralph Gonzalez
Date: Mon, 17 Sep 1990 15:06

19 lines
1138 bytes

Hi.  I'm not much of an expert on C++ (I mostly use Think C 4.0, a
similar but less detailed language), so perhaps the following
suggestion doesn't make sense stylistically, but here goes:

Often I want to dynamically allocate space in my constructor.  If
there's not enough memory to do so, it would be nice if the 'new'
operator simply deleted the object for me and returned NULL.  Anything
I was able to allocate in the constructor should in this case be
deallocated by the constructor before it ends.  An alternative would
be for 'new' to call the destructor before deleting the
un-initializable object.

This implies the constructor should return a boolean value, which is
made use of by 'new'.

What do you think?

-Ralph

Re: Constructors/Destructors returning value?

#522

Author: Ron Guilmette
Date: Fri, 21 Sep 1990 04:12

25 lines
1353 bytes

In article <Sep.17.11.06.04.1990.7553@elbereth.rutgers.edu> rgonzal@elbereth.rutgers.edu (Ralph Gonzalez) writes:
<
<Often I want to dynamically allocate space in my constructor.  If
<there's not enough memory to do so, it would be nice if the 'new'
<operator simply deleted the object for me and returned NULL.  Anything
<I was able to allocate in the constructor should in this case be
<deallocated by the constructor before it ends.  An alternative would
<be for 'new' to call the destructor before deleting the
<un-initializable object.
<
<This implies the constructor should return a boolean value, which is
<made use of by 'new'.
<
<What do you think?

I think this looks like a job for... ta ta da... exceptions!

(applause)

:-) :-)
-- 

// Ron Guilmette  -  C++ Entomologist
// Internet: rfg@ncd.com      uucp: ...uunet!lupine!rfg
// Motto:  If it sticks, force it.  If it breaks, it needed replacing anyway.

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