Developer Q&A Part 2

OK, so it’s been a couple of weeks since my last post of answers to Scott’s developer questions, but here’s the next batch that I’ve been researching…images

Q) What is the maximum amount of memory any single process on Windows can address? Is this different to the maximum virtual memory for the system? How would this affect a system design?

A) On a 32 bit system the maximum amount of memory that can be addressed is 4GB (2 to the power of 32). I think that this is the same as the total virtual memory. Any system that requires large amounts of memory (such as a database) would need to consider these restrictions.

Q) What is the difference between an EXE and a DLL?

A) An EXE has an entry point and can be executed in isolation. A DLL (Dynamic Link Library) is a resource used by executables to provide modularised functionality.

Q) What is strong-typing versus weak-typing? Which is preferred? Why?

A) Strong-typing is where the “type” of variables is explicitly specified up-front, whereas weak-typing is where variable type is implied, usually through the operations performed on it (examples are using the variant type and performing Mathematical operations). Strong-typing is usually preferred so that a compiler/interpreter can spot potential errors early on. However if you are writing short scripts or make use of the flexibility of weak-typing, then it can sometimes by preferable to use it.

Well, we’re off to Geneva for 5 days now, so a long break from computing and time to reflect, read, talk, explore and enjoy!


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