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++;
}
}
}
}
foreach is useful when you don’t need to know the index of something. If you do, conventional i, j, k, etc. are useful.
A lot of it depends what you’re doing (number crunching, for instance) or if you’re in a limited programming language (why won’t BASIC die already?) where parallel arrays are still a thing.
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.
jis for a loop in a loop.It was very common in text books when showing nested loops
foreach is useful when you don’t need to know the index of something. If you do, conventional i, j, k, etc. are useful.
A lot of it depends what you’re doing (number crunching, for instance) or if you’re in a limited programming language (why won’t BASIC die already?) where parallel arrays are still a thing.