Idiom for simple C for i = 0; i < n; i++

Explain
1

i’ve noticed some sample code realizing this sort of simple C for loop using a zig while construct…

i’ve also discovered that for (0..n) |i| { ... } works splendidly in zig…

what are the advantages of one over the other in terms for generality and/or performance ???

2

The new for loops syntax was just added last year, which might explain while some sample code still uses the while loop.
Also the for loop as one big weakness: It only works with usize. So if you want to e.g loop over i32s you need to use a while loop.

2 Likes
3

It also does not have support for changing the sequence’s direction or increment.

1 Like
4

In my head I divide between math and memory. Whenever I want to iterate over memory I use the for-syntax and whenever I use it to compute something or want to do something a number of times I use the while syntax.

2 Likes