
<A NAME=FOREACH>

<TITLE>FOREACH</TITLE></A>
<b><a href=r37_idx.html>INDEX</a></b><p><p>



<B>FOREACH</B> _ _ _  _ _ _  _ _ _  _ _ _ <B>command</B><P>
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<em>foreach</em>is a synonym for the <em>for each</em> variant of the 

<A HREF=r37_0047.html>for</A> construct. It is designed to iterate down a list, 
and an 
error will occur if a list is not used. The use of <em>for each</em> is 
preferred to <em>foreach</em>. 
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 <P> <H3> 
syntax: </H3>
<em>foreach</em>&lt;variable&gt; in &lt;list&gt; &lt;action&gt; &lt;expression
&gt; 
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where &lt;action&gt; ::= <em>do | product | sum | collect | join</em> 
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examples: </H3>
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foreach x in {q,r,s} sum x**2; 

   2    2    2
  Q  + R  + S

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