links for 2009-07-07
2009-07-07 03:01 am![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
archerships-
For new programmers, debugging errors associated with pointers can be a nightmare. "Segmentation Fault (core dumped)" is a pretty vague error message, and it's even worse when strange bugs start appearing that don't cause segmentation faults — but that result in things like memory getting overwritten in unexpected ways.
But finding problems with pointers is easier than you'd think. Those segfaults often turn out to be among the easiest bugs to find, and using special tools such as Valgrind, even finding buffer overflows is simplified.
-
This post introduces messaging within Objective-C. Messaging is the terminology for invoking methods on an object. The format for a message expression is as follows (the brackets are required):
[object method]
or in Objective-C parlance
[receiver message]
-
I got bitten today by the fact that Objective-C strings in Cocoa programming are not the same things as plain old C strings. The problem is that Objective-C is essentially an object-oriented veneer on top of plain old C; sometimes it matters that you remember this, and other times it doesn’t. This was one of the times it mattered.
-
Profile Objective-C code with Shark
-
It is therefore vital that you have accurate information on exactly where the time is being spent within your applications — and for real input data — if you hope to have a chance of optimizing it effectively. This activity is called code profiling. This article introduces a profiling tool provided with the GNU compiler tool chain, the imaginatively named GNU profiler (gprof), for those who are relatively new to open source development tools.
-
Warning: This post is longer than my usual. You may want coffee. The focus of this post is how to make a DMG image with a background in an automated fashion.
About DMG
For those who are reading this who are not aware of it, DMG (Disk Image) is the format commonly used to distribute software on OS X. There are other formats, the more traditional like tar.gz/zip/.sit. For more information specifically about how to distribute software as a DMG, you'll want to read Peter Hosey's how to distribute your software (and his semi-in-depth overview of compression format usage on OS X). -
So you want to get/post to an https url using ssl, certificates, pem and ruby ?
Original: craschworks - comments