Re: ContainsQ ?
- To: mathgroup at smc.vnet.net
- Subject: [mg72575] Re: [mg72563] ContainsQ ?
- From: Carl Woll <carlw at wolfram.com>
- Date: Wed, 10 Jan 2007 02:46:58 -0500 (EST)
- References: <200701091229.HAA21425@smc.vnet.net>
Chris Chiasson wrote:
>Is there something like ContainsQ that means !FreeQ?
>
>
>
There is MemberQ. It's not quite the opposite, because the default
levels are different. Anyway,
MemberQ[list, form, {0, Infinity}]
is equivalent to
!FreeQ[list, form]
Similarly,
FreeQ[list, form, {1}]
and
!MemberQ[list, form]
are equivalent.
Carl Woll
Wolfram Research
- References:
- ContainsQ ?
- From: "Chris Chiasson" <chris@chiasson.name>
- ContainsQ ?