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Re: Deleting expressions containing a certain head

• To: mathgroup at smc.vnet.net
• Subject: [mg126015] Re: Deleting expressions containing a certain head
• From: "wb at wavebounce.com" <rob at wavebounce.com>
• Date: Fri, 13 Apr 2012 04:46:05 -0400 (EDT)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com

I'm not sure this quite meets the challenge. For example, Exp[I Pi} is not Complex but it "has a complex number in it" and appears in the output. Perhaps this is as it should be.


> Getting rid of any expression that has a complex number in it.
>
> How does one go about this?
>


list = {2^(Complex[2, 3]) + 3, 2, 3 x};

Select[list, FreeQ[#, Complex] &]

hth,

albert