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Re: compilation of macros [message #9842 is a reply to message #9840]

Wed, 02 December 2009 19:57

Mohammad Al-Turany
Messages: 518
Registered: April 2004
Location: GSI, Germany

first-grade participant

From: *dip.t-dialin.net

Hi,

The order of includes should not make any difference. The Joke is if one order the includes from local to global this will help identifying such cases. i.e. one get an error if the header depends on a standard (or local) header but doesn't itself #include that header.

And that was the case here. If the PndDrc.h was included first then the compiler will find the error, but the facts that
1. the header was never used directly (tell Bertram tried to compile the macro!)
2. the PndDrcGeo.h was included in the cxx file before the PndDrc.h

make this situation.

So it is a good Joke.

Quote:

what about cleaning up all header files?

This would be great, but we cannot do this all the time ourselves, the people writing code should also take care of there own code, and following such jokes as the one here will help all to find such situations more easily.

So one can consider this issue of include order as a convention or an advice (or a Joke!) and the fact that C++ does not forbid this or even care about it allow us to ask for it.

regards

Mohammad

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[Message index]

		compilation of macros By: Bertram Kopf on Tue, 01 December 2009 21:40
		Re: compilation of macros By: Mohammad Al-Turany on Tue, 01 December 2009 23:01
		Re: compilation of macros By: Mohammad Al-Turany on Wed, 02 December 2009 10:03
		Re: compilation of macros By: Florian Uhlig on Wed, 02 December 2009 10:50
		Re: compilation of macros By: Matthias Steinke on Wed, 02 December 2009 19:22
		Re: compilation of macros By: Mohammad Al-Turany on Wed, 02 December 2009 19:57
		Re: compilation of macros By: Florian Uhlig on Thu, 03 December 2009 09:48
		Re: compilation of macros By: Bertram Kopf on Wed, 02 December 2009 17:19
		Re: compilation of macros By: StefanoSpataro on Wed, 02 December 2009 17:25
		Re: compilation of macros By: Bertram Kopf on Wed, 02 December 2009 18:44
		Re: compilation of macros By: Florian Uhlig on Thu, 03 December 2009 08:52
		Re: compilation of macros By: Elwin Dijck on Wed, 02 December 2009 23:24
		Re: compilation of macros By: Bertram Kopf on Thu, 03 December 2009 00:40
		Re: compilation of macros By: Florian Uhlig on Thu, 03 December 2009 11:23
		Re: compilation of macros By: Bertram Kopf on Thu, 03 December 2009 14:48
		Re: compilation of macros By: Florian Uhlig on Fri, 04 December 2009 14:40
		Re: compilation of macros By: Bertram Kopf on Fri, 04 December 2009 16:32
		Re: compilation of macros By: Florian Uhlig on Mon, 07 December 2009 14:38
		Re: compilation of macros By: Bertram Kopf on Mon, 07 December 2009 14:55
		Re: compilation of macros By: Mohammad Al-Turany on Mon, 07 December 2009 15:19
		Re: compilation of macros By: Bertram Kopf on Mon, 07 December 2009 17:24
		Re: compilation of macros By: Johan Messchendorp on Mon, 07 December 2009 19:16
		Re: compilation of macros By: Elwin Dijck on Fri, 04 December 2009 15:29
		Re: compilation of macros By: Johan Messchendorp on Thu, 03 December 2009 09:34
		Re: compilation of macros By: StefanoSpataro on Thu, 03 December 2009 09:54
		Re: compilation of macros By: Mohammad Al-Turany on Fri, 04 December 2009 15:38
		Re: compilation of macros By: Elwin Dijck on Fri, 04 December 2009 16:52
		Re: compilation of macros By: Elwin Dijck on Thu, 07 January 2010 15:49
		Re: compilation of macros By: Tobias Stockmanns on Thu, 07 January 2010 16:18

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