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The $count can get upto 255 (and theoretically beyond with unicode). The numbers are eventually packed to form a binary string of codepoints that increment, magic string auto-increment style, but starting at chr(0) and modulo alphabet size.

I'm currently limiting my thinking to 8-bit ascii bytes, but notionally the alphabet could be larger with unicode.

The actual keys involved (made up from an arbitrary alphabet) are translated to chr(0) ... chr(alphabet max).

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In reply to Re^3: In need of a sequence iterator. by BrowserUk
in thread In need of a sequence iterator. by BrowserUk

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