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
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.