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<TITLE>Mozart Standard Library: Lazy Generators</TITLE>
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<H1>Lazy Generators</H1>
<P CLASS="AUTHOR">Denys Duchier</P>
<DL>
<DT><B>module</B>
<DD><SPAN CLASS="MODULE">x-oz://system/Generator.ozf</SPAN>
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<P>This module provides <I>lazy generators</I>, i.e. functions that
return lists which are lazily computed concurrently, by-need
<H2>Exports</H2>
<DL>
<DT><CODE>{Generator.Tails +L ?Tails}</CODE>
<DD>returns a lazy list of all non-empty tails of list <CODE>L</CODE>
<DT><CODE>{Generator.count +From +To +By ?L}</CODE>
<DD>returns a lazy list of integers starting at <CODE>From</CODE>, ending at
at most <CODE>To</CODE>, and in steps of <CODE>By</CODE>. Whether we count
up or down is determined by the sign of <CODE>By</CODE>
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