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set obj [objarray new_from_to

...

 <type> <from> <to>]

Allocate an array of type $type filled with integer-like values increasing from $from to $to

<type>: chararray shortarray intarray longarray longlongarray floatarray doublearray

<from> arbitrary integer value

<to> arbitrary integer value greater or equal than <from>

e.g.

set obj [objarray new_from_to <type>intarray <from>-3 <to>]2]
-> -3 -2 -1 0 1 2