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doc: return none instead of error in the iterator example (#16486)

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RGBCube 2022-11-19 20:11:56 +03:00 committed by GitHub
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@ -1773,7 +1773,7 @@ mut:
fn (mut iter SquareIterator) next() ?int {
if iter.idx >= iter.arr.len {
return error('')
return none
}
defer {
iter.idx++