What is an iterator?
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An iterator is a simple looping mechanism that can repeat a process across some data structure. |
This a simple explanation, as iterators can get very complex. Mark's explanation is:
- An iterator is an object interface to a list
- It keeps track of the 'current position' in the list
- It has a method for advancing to the next item in the list
What we are actually refering to here is closures.