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MathGroup Archive 1991

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Switch and List: How to combine?

  • To: mathgroup at yoda.physics.unc.edu
  • Subject: Switch and List: How to combine?
  • From: fink at acf5.nyu.edu (Howard Fink)
  • Date: Tue, 8 Oct 91 10:57:52 -0400

How do I use a list within Switch?

Switch[expr,form1,val1,form2,val2,...] evaluates expr, matches it to form i,
and returns val i, if there's a match, Null otherwise.  When I put in a list
{form1,val1,form2,val2,...} Mathematica treats it as a single object, and
for the life of me I can't strip off the curly brackets.  The closest I came
was with Sequence, which replaced the curly brackets with parentheses.

Howard Fink
fink at acf5.nyu.edu





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