Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2007
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2007

[Date Index] [Thread Index] [Author Index]

Search the Archive

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>
  • Prev by Date: Re: Call-by-reference from inside a function
  • Next by Date: Re: Call-by-reference from inside a function
  • Previous by thread: ContainsQ ?
  • Next by thread: Re: ContainsQ ?