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Comment Different math from K-12 (Score 2) 616

It's hard to do almost any programming without understanding boolean operations (both logical and bitwise), and one will be really limited if one doesn't understand binary arithmetic and how hexadecimal works. I don't think this stuff is ordinarily taught in grades K to 4. One isn't going to understand how what integer types in many languages do unless one understands modulo-2^n arithmetic. Again, that's not ordinarily taught in grades K to 4. It may not even be taught in grades 5 to 12 (no doubt depends on school). None of this is *hard* mathematics, but it's mathematics nonetheless.

Generally speaking, all algorithms should probably be thought of as mathematical entities. So whenever one is trying to figure out an algorithm for a task, one is doing mathematics. It's not the sort of mathematics one typically does in K-12, but it's mathematics nonetheless. And it's not uncommon to have to do a little bit of traditional mathematics on the side to figure out if you're going to run out of memory or take too long.

And even if you're not trying to understand an algorithm yourself, at least you need to be able to understand statements like "Worst case performance of a merge sort is O(n log n) while the average case performance of a bubble sort is O(n^2)" in order to choose between off-the-shelf ones.

Comment Re:Done to _gouge_ the customer better (Score 1) 379

If most of their customers aren't using off-brand or foreign cartridges, then Xerox isn't losing money from these customers using off-brand or foreign cartridges.

Without the locking, Xerox is only losing money from those customers who would otherwise use off-brand or foreign cartridges. And _these_ customers might well abandon Xerox if the locking is in place. Whether this would be a net loss to Xerox depends on (a) whether they make any money on the printers themselves, (b) how likely they are to leave Xerox and (c) how much money Xerox makes on the foreign cartridges.

Comment Re: Do most of the work? (Score 2) 443

Renaming a field or method of a class is more tricky with an editor, though, since other classes may have a field or method with the same name and you may not want to rename those.
It's also nice not to have to remember or look up APIs, constant names, etc.

As a teenager, I used Borland IDEs (mainly Turbo C). Then I spent over a decade mainly using commandline tools (C and assembly). But then since starting Android development some years ago, I've gotten to appreciate IDEs enough that now sometimes I even write LaTeX presentations and articles in Eclipse and short python scripts in Visual Studio. (If only loading time were faster.)

Over my decade of commandline development, I also forgot how helpful a GUI debugger can be and only rediscovered it recently.

Never say you know a man until you have divided an inheritance with him.