Something i found * EAX – Accumulator Register * EBX – Base Register * ECX – Counter Register * EDX – Data Register * ESI – Source Index * EDI – Destination Index * EBP – Base Pointer * ESP – Stack Pointer
I can only imagine of sending a value from the server to the client which is (unchanged) sent back to maintain a kind of a state. Precisely. In fact, it’s still being used for this purpose today because HTTP as we know it today is still, at least fundamentally, a stateless protocol. This use case … Read more
Recent versions of git log learned a special form of the -L parameter: -L :<funcname>:<file> Trace the evolution of the line range given by “<start>,<end>” (or the function name regex <funcname>) within the <file>. You may not give any pathspec limiters. This is currently limited to a walk starting from a single revision, i.e., you … Read more
I work in the telemetry field and we have some of our customers have old analog-to-digital converters that still use 1’s complement. I just had to write code the other day to convert from 1’s complement to 2’s complement in order to compensate. So yes, it’s still out there (but you’re not going to run … Read more
Make sure you are following the Same Origin Policy. This means same domain, same subdomain, same protocol (http vs https) and same port. How does pushState protect against potential content forgeries? EDIT: As @robertc aptly pointed out in his comment, some browsers actually implement slightly different security policies when the origin is file:///. Not to … Read more
My understanding is that this range is barred on the grounds that a markup language should not have any need to support transmission and flow control characters and including them would create a problem for any editors and parsers in binary conversion. I’m struggling to find anything ex cathedra on this from Tim Bray et … Read more
Sorry but right now it really can’t be done.. On iOS 5 there isn’t any access to call_history.db -> Which is exactly what you were looking for. The app mentioned here: http://itunes.apple.com/us/app/callog/id327883585?mt=8 Does not work with iOS 5 (don’t download but check the users’ reviews..) On iOS 4, you might still be able to get … Read more
As to the historic rationale, I can’t say for certain (because I didn’t design them). My thoughts on the matter are that early CPUs got their original program counter set to 0 and it was a natural desire to start the stack at the other end and grow downwards, since their code naturally grows upward. … Read more
The C FAQ has some examples of historical machines with non-0 NULL representations. From The C FAQ List, question 5.17: Q: Seriously, have any actual machines really used nonzero null pointers, or different representations for pointers to different types? A: The Prime 50 series used segment 07777, offset 0 for the null pointer, at least … Read more
On older machines, codes smaller than 8 bits were fairly common, but most of those have been dead and gone for years now. C and C++ have mandated a minimum of 8 bits for char, at least as far back as the C89 standard. [Edit: For example, C90, §5.2.4.2.1 requires CHAR_BIT >= 8 and UCHAR_MAX … Read more