I always use x or y, coming from Python background
this post was submitted on 09 Jul 2023
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I started using the first letter of the thing I am iterating over. This is particularly helpful with nested loops so I can easily remember which index variable corresponds to which thing.
I thought it come from mathematical sequences, but actually it doesn't. My best bet is that i is the shorthand for index
Well. I guess I'm then a some kind of heretic then. 🤷
When my brain doesn’t work I’ll resort to naming them the single of the plural. Like keys turns into key when i don’t wanna call it “objkey” or “outrageouslylongnamethatmayormaynotbeafittongwordtodescribeakey”
chuckles in Python
I'm honestly prefer short but (usually) complete words. Somewhere along the line I realized that being explicit really helps when you need to change it later.
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don't mind i but personally always use index or x, y, z for games
WTF, I have never used nor seen "j."
I don't usually have to name these variables these days though. Pretty much everything I use has foreach or some functional programming type stuff.
And like that, the off-by-one mistakes disappear.
It was very common in text books when showing nested loops
int nWhatTheCount = 0;
for (int i = 0; i < 10; i++) {
for (int j = 0; j < i; j++) {
for (int k = 0; k < j; k++) {
for (int l = 0; l < k; l++) { // and on, and on
nWhatTheCount++;
}
}
}
}
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