Re: passing a string to a dll

From:

"Tom Serface" <tom.nospam@camaswood.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Tue, 18 Sep 2007 14:35:41 -0700

Message-ID:

<#ZyxQwj#HHA.748@TK2MSFTNGP04.phx.gbl>

Yeah, but writing

if(!s.Compare(_T("12345"))

is even more confusing than

if(s.Compare(_T("12345")) == 0)

I think == and Compare evaluate to the same code, but CompareNoCase() is
definitely useful. I wish there were a FindNoCase() equivalent.

Tom

"David Webber" <dave@musical-dot-demon-dot-co.uk> wrote in message
news:%23HnKe%23i%23HHA.5160@TK2MSFTNGP05.phx.gbl...

"David Ching" <dc@remove-this.dcsoft.com> wrote in message
news:lHVHi.50873$Um6.31878@newssvr12.news.prodigy.net...

if(s != _T("12345") )

...

if( s.Compare( _T("12345") ) )

Ah, but you would really need:

if( s.Compare( _T("12345") == 0 ) )

No. Compare() returns non-zero if the strings differ - like strcmp().

if (s != _T("12345") )
which illustrates the intent perfectly.

I agree it looks nicer. But as I say it leaves me a little nervous, if
irrationally so. [Not *that* irrational, otherwise the OP wouldn't have
had a problem!]

But I don't go for all that ==0 stuff. I was using C long enough to get
used to writing

if( n )

for any integer type. Similarly I never write if( p!=NULL ) for pointers
but just if(p). And things like

TCHAR *psz;
...
if( psz && *psz ) ....

The idiom is now so familiar that I no longer feel the need for my usual
degree of pedantry :-)

Dave
--
David Webber
Author of 'Mozart the Music Processor'
http://www.mozart.co.uk
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