U++ forum: Welcome to the forum

Status & Roadmap

Authors & License

Funding Ultimate++

Search on this site

Search in forums

Home » Extra libraries, Code snippets, applications etc. » C++ language problems and code snippets » explanation of c++ typedef line

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Return to the default flat view

Create a new topic

Submit Reply

Re: explanation of c++ typedef line [message #18236 is a reply to message #18235]

Thu, 18 September 2008 15:23

captainc is currently offline

captainc
Messages: 278
Registered: December 2006
Location: New Jersey, USA

Experienced Member

This was one of the comments:

Quote:

typedef void* XYZHANDLE;
typedef void* IJKHANDLE;

is not type safe, since all handle will became mutually replaceable being all void*. (you can assign an XYZ to an IJK).

One way to get around this is to declare a category (empty struct) and point to it.

typedef struct XYZHANDLE_ {} *XYZHANDLE;
typedef struct IJKHANDLE_ {} *IJKHANDLE;

Now IJKHANDLE and XYZHANDLE cannot anymore be assigned each other.

Maybe the author replaced it incorrectly.

Report message to a moderator

Send a private message to this user

[Message index]

		explanation of c++ typedef line By: captainc on Thu, 18 September 2008 03:20
		Re: explanation of c++ typedef line By: mrjt on Thu, 18 September 2008 11:56
		Re: explanation of c++ typedef line By: cas_ on Thu, 18 September 2008 14:27
		Re: explanation of c++ typedef line By: captainc on Thu, 18 September 2008 15:23
		Re: explanation of c++ typedef line By: mr_ped on Thu, 18 September 2008 16:27

Previous Topic:	Time for little quiz!
Next Topic:	Multiple statements in for loop

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

PDF

]

Current Time: Tue May 14 17:16:04 CEST 2024

Total time taken to generate the page: 0.01233 seconds