MathGroup Archive 1994

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Use of Sequence to strip "List"

  • To: mathgroup at
  • Subject: [mg299] Use of Sequence to strip "List"
  • From: mcdonald at (William MacDonald)
  • Date: Wed, 7 Dec 94 11:53:45 EST

 Subject: Re: [mg281] Taking brackets off lists
 To: < at markov.stats (corcoran)
 Date: Wed, 7 Dec 94 11:27:30 EST
 In-Reply-To: <9412050724.AA29593 at; from "corcoran" at Dec 4, 94 5:56 pm
 X-Mailer: ELM [version 2.3 PL11]
  If I have a list like,
  list = {1,1,1,2}
  how do I find the part of a expression at the level specified by the list?
  I want exp[[1,1,1,2]],
  but exp[[list]] doesn't work.
 Sequence is an undocumented object mentioned by Roman Maeder which is
 a "nude" list, that is, an ordered set with no delimiters.
 William M. MacDonald
 Professor of Physics
 University of Maryland
 Internet: mcdonald at

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