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how to test where a list contains constant(s) or not

  • To: mathgroup at smc.vnet.net
  • Subject: [mg91965] how to test where a list contains constant(s) or not
  • From: Aya <sh_liuhuashan at 163.com>
  • Date: Mon, 15 Sep 2008 03:41:28 -0400 (EDT)

case1: { a, b, c, Pi }   gives true because of Pi
case2: { a, b, c, 0.0001} gives true because of 0.0001
case3: { a, b, c,  2 + Pi I } gives ture becase of 2 + Pi I
case4: { a, b, c} gives false

is this function right ?

ComplexQ[z_] := NumericQ[ z ] || ( NumericQ[ z ] && SameQ[ Head[ z ],
Complex] )
IsConstantsIn[ lstList_ ] :=
		Module[ { intLength },
			intLength = Length@Select[ lstList, ComplexQ[ # ]& ];
			If[ intLength > 0, Return[ True ], Return[ False ] ];
			Return[ False ];
			]


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