Re: basic_string ctor


"Stephen Howe" <stephenPOINThoweATtns-globalPOINTcom> wrote in message
news:eTm0xOHXFHA.3840@xxxxxxxxxxxxxxxxxxxxxxx

> As shown in answer to Duane, you can make a valid pointer to an empty
string
> and a NULL pointer both construct a std::string as empty.
>
> But if you fold this distinction in std::string's constructor, so NULL
will
> silently construct an empty std::string, then in the situation where the
> pointer being NULL is an error in the program, this will silently pass
over
> this.

The thing is that if I want to write something that takes a null
pointer as an error, I'll check it before calling the function. More
than likely I'm converting something from a GUI layer to a standard
layer. We keep the GUI stuff separate from other code. In our case,
I can't actually think of an instance when a null char* would be treated
as anything but an empty string.

I see what you're saying but I think that in most cases, I don't agree.

Of course if I could write a function with explicit arg lists, this would
be less of a problem (g).

.

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