Re: How to clear OverBar[p]
- To: mathgroup at smc.vnet.net
- Subject: [mg30233] Re: How to clear OverBar[p]
- From: "Orestis Vantzos" <atelesforos at hotmail.com>
- Date: Fri, 3 Aug 2001 00:56:03 -0400 (EDT)
- Organization: National Technical University of Athens, Greece
- References: <9kavjk$c2n$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Yes, ValueQ will return True if there is a definition for the variable. Orestis "Martin Richter" <mrMICE.fi at cbs.dk> wrote in message news:9kavjk$c2n$1 at smc.vnet.net... > Sorry, I have just one more question. > > Normally I clear variables before assigning values so no mistakes are made. > But the > > Use Unset > Overbar[p] > > only works when Overbar[p] has assigned a value otherwise you will get an > error/warning. Is there a way to avoid this, like asking if a variable is > already assigned a value. > > TIA > Martin > > > "Martin Richter" <mrMICE.fi at cbs.dk> wrote in message news:... > > Hi > > > > Thanks for the help and reply. From the thread mention earlier I just have > > the impression just to write > > > > Overbar[p] > > > > and not > > > > Use Unset > > Overbar[p] > > > > One of many stupid mistakes, > > Martin > > > > "Martin Richter" <mrMICE.fi at cbs.dk> wrote in message > > news:9k8706$3kk$1 at smc.vnet.net... > > > Hi > > > > > > Using Mathematica 4.1 I want to Clear the Variable OverBar[p]. I have > > tried > > > all suggestions comming from the thread: Re: Clear or remove definitions > > > including Subscripts but this does not work here :-( > > > > > > TIA > > > Martin > > > > > > --------------------------------------- > > > Please remove PET to reply by email > > > > > > > > > > > > > > > >