Initializing help system before first use

nextcell

Purpose
Advance an iterator to the next cell of its array.
Synopsis
function nextcell(it:iterator):boolean
Argument
it 
An iterator
Return value
true if the iterator is positioned on a cell, false if the enumeration has finished
Example
See example for getstatus and section The type iterator.
Further information
1. Once an iterator has been bound to an array with inititer this function can be called iteratively until it returns false in order to enumerate all cells of the associated array. The state of the iterator is set to ITER_READY whenever true is returned ( i.e. the iterator can be used to dereference an array).
2. After this function has returned false the iterator is in the state ITER_DONE. Calling it again will have no effect and the return value will remain false.
3. Trying to use this function on an unbound iterator will cause a runtime error.
Related topics
getstatus, inititer.
Module
mmreflect

Parent Topic Procedures and functions

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