34 lines
804 B
Markdown
34 lines
804 B
Markdown
# Iterator interface
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Iterators are representing the [Iterable] entity, to access its contents
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sequentially.
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To implement the iterator you need to implement only two abstract methods:
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## Abstract methods
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### hasNext(): Bool
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// lets test
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// offset
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Should return `true` if call to `next()` will return valid next element.
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### next(): Obj
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Should return next object in the iterated entity. If there is no next method,
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must throw `ObjIterationFinishedError`.
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## Usage
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Iterators are returned when implementing [Iterable] interface.
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For high-performance Kotlin-side interop and custom iterable implementation details, see [Efficient Iterables in Kotlin Interop](EfficientIterables.md).
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## Implemented for classes:
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- [List], [Range]
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[List]: List.md
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[Range]: Range.md
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[Iterable]: Iterable.md |