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MathGroup Archive 2009

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Re: Do-command

  • To: mathgroup at smc.vnet.net
  • Subject: [mg102613] Re: [mg102588] Do-command
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Mon, 17 Aug 2009 04:01:34 -0400 (EDT)
  • Reply-to: hanlonr at cox.net

Do merely evaluates its expression it does not produce any output separate from what the expression does. Or as the help for Do states: Unless an explicit Return is used, the value returned by Do is Null.  Use Table

Table[Select[{1, 2, 4, 7, 6, 2}, # >= i &], {i, 7}]

{{1,2,4,7,6,2},{2,4,7,6,2},{4,7,6},{4,7,6},{7,6},{7,6},{7}}


Bob Hanlon

---- Uwe Gotzes <u.gotzes at googlemail.com> wrote: 

=============
Hi!

Can anybody tell, why
Do[Select[{1, 2, 4, 7, 6, 2}, # >= i &], {i, 7}]
does not produce output in Mathematica?




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