Re: #import, #include, pre-compiled headers
Re: #import, #include, pre-compiled headers
- Subject: Re: #import, #include, pre-compiled headers
- From: "J. Todd Slack" <email@hidden>
- Date: Thu, 28 Aug 2008 11:37:42 -0700
Hi Jon,
Thanks, the Headers and Performance section was helpful.
-Jason
On Aug 28, 2008, at 11:27 AM, Jonathan Hohle wrote:
#import and #include do not copy the contents of the other files
into the file which contains them, rather it tells the compiler that
it is referencing definitions from that file. It does not increase
the size of your program to #import or #include a header file more
than once across many files.
http://developer.apple.com/documentation/MacOSX/Conceptual/BPFrameworks/Tasks/IncludingFrameworks.html
http://gcc.gnu.org/onlinedocs/cpp/Include-Operation.html#Include-Operation
Jon
<><
On Thu, Aug 28, 2008 at 11:18 AM, J. Todd Slack <email@hidden
> wrote:
HI All,
Question on #import, #include and pre-compiled headers.
I have a bunch of classes that import the same #imports (like QTKit,
Quicktime, Cocoa, Foundation, etc, etc)
Is there a way that I can just #import them once and not have to for
each class?
Is that a pre-compiled header?
Wouldn't not importing them each class make my app smaller in size
and use less memory?
Thanks,
-Jason
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Jon
<><
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