wallwalker

I want to post more about programming, because I'm still trying to trace a program and figure out HOW it works to find all r-combinations of a n-set without repeating any combinations. It clearly works, but I want to know why.

Right now, I'm trying to figure out how to resize a .vmdk hard drive for a VirtualBox VM, because the resize commands I can find will not work on the format. It's too small for what I need to do with it, the answers I am finding are not working, and there would be a lot of data I would have to transfer if I had to start over. Alternatively I need to find a way to create a new, larger drive, then transfer the data from the old drive to the new drive, preferably outside of the VM (creating a disk image within the VM requires unmounting, which is causing problems.)

I need to be practicing programming challenges because of job interviews and the like, because I have more interviews coming up and I don't want to have another experience like the last technical interview that I tried.

Is this ADD? I still don't know.

I'm probably going to start posting nerdy commentary about programming and similar things here, just to try to make sure I'm spending a bit more brainpower on it.

I had a large post started about one of the cautionary tales about sloppy programming that I studied this past year, the Therac-25. (It's a medical device, a linear accelerator, and the errors in programming resulted in some pretty terrifying things. I'd post it under a cut, because it's really hard to read if you're squeamish about medical mistakes.) It wasn't very technical, and I lost it because I didn't save it to a file. Might rewrite it later, since it's a good reminder not to be sloppy with important code.

Sometimes I don't think I can be technical about these things anymore. I know that it'll help when I'm not so tired from lack of caffeine. Just have to keep at recovering.