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Re: DownValues

  • To: mathgroup at smc.vnet.net
  • Subject: [mg113709] Re: DownValues
  • From: Albert Retey <awnl at gmx-topmail.de>
  • Date: Mon, 8 Nov 2010 05:39:19 -0500 (EST)
  • References: <ib8cur$2ia$1@smc.vnet.net>

Am 08.11.2010 09:38, schrieb Stephan:
> Hi,
> 
> Is there any way to find out about definitions like:
> 
> 	f[1][2] = 3 ?
> 
> Here is a sample run:
> 
> In[1]:= f[1][2] = 3
> Out[1]= 3
> In[2]:= DownValues[f]
> Out[2]= {}
> In[3]:= DownValues[f[1]]
> 	During evaluation of In[3]:= DownValues::"sym" :  "   
> 	StyleBox[\"\\\"\< is expected to be a symbol.\>\\\"\", \"MT\"]  \
> Out[3]= DownValues[f[1]]
> 
> So with "DownValues" I can't seem to learn about the definition f[1][2]...

SubValues, unfortunatly seem to be undocumented, but gives you what you
are looking for:

SubValues[f]

hth,

albert



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