for
The for
loop iterates over ranges of values or the items in a collection:
Speaker Notes
- Under the hood
for
loops use a concept called "iterators" to handle iterating over different kinds of ranges/collections. Iterators will be discussed in more detail later. - 請注意,
for
迴圈只會疊代至4
。您可以示範1..=5
語法,這代表含頭尾的範圍。