Function
iter
Iterator to item at given position.
Iterator iter(object, pos [, tag])
Parameters
object
A container.
Types: AlignCols, String
pos
The position of an item in object.
Metafunctions: Position
tag
An iterator spec tag that specifies the kind of the iterator returned. (optional)
Default: Given by DefaultGetIteratorSpec.
Return Values
An iterator to the item at position pos in object.
Metafunctions: Iterator
Remarks
If pos is out of range, then the behavior of the function is undefined.
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