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FullForm OK but StandardForm fails

• To: mathgroup at smc.vnet.net
• Subject: [mg88687] FullForm OK but StandardForm fails
• From: Fiona H Evans <fevans at agric.wa.gov.au>
• Date: Mon, 12 May 2008 06:40:16 -0400 (EDT)

Hi all,

I'm wondering if this is a bug in 6.0.2.0 or whether anyone can see my
problem here. I'm running a model that updates an object called 'data'
using a module with the HoldFirst attribute. After I run the module, I
can see the Head of data, and its FullForm, but when I try to view its
StandardForm, I get a $RecursionLimit error as follows. If I try to
Print data, the kernel crashes. However, if I copy the FullForm of
data (Out[76]) into a new object, it Prints perfectly. Any ideas?


In[75]:= Head[data]

Out[75]= localState

In[76]:= FullForm[data]

Out[76]//FullForm=
localState[community[List[population["canola",genotypeInfo[],cohortList[List[]],cohortList[List[]],
cohortList[List[]],cohortList[List[]]],population["lupin",genotypeInfo[],cohortList[List[]],cohortList[List[]],
cohortList[List[]],cohortList[List[]]],population["ryegrass",genotypeInfo[List[Rule[List[1,1],
0.9993453217507997`],Rule[List[Blank[Integer],Blank[Integer]],
1]],List["major"],List["dominant"],
List["glyphosate"],List[Rational[1,1000000000]],List[0.1`]],cohortList[List[cohort[time[3502828800],
hashedMSet[ruleSet[List[Rule[List[List[1],List[1]],
1],Rule[List[List[1],List[2]],2],Rule[List[List[2],
List[1]],3],Rule[List[List[2],List[2]],
4]]],List[499345536052604696,327124822795158,
327124822795158,214301804988],List[info[List[]],info[List[]],info[List[]],info[List[]]]]]]],
cohortList[List[]],cohortList[List[]],cohortList[List[]]],population["wheat",genotypeInfo[],
cohortList[List[cohort[time[3502828800],hashedMSet[ruleSet[List[Rule[List[List[1],List[1]],
1]]],
List[160000000000000000],List[info[List[]]]]]]],cohortList[List[]],cohortList[List[]],cohortList[List[]]],
population["wildradish",genotypeInfo[],cohortList[List[]],cohortList[List[]],cohortList[List[]],
cohortList[List[]]]]],herbicideResidueList[]]

In[77]:= StandardForm[data]

During evaluation of In[77]:= $RecursionLimit::reclim: Recursion depth
of 1024 exceeded. >>
During evaluation of In[77]:= $RecursionLimit::reclim: Recursion depth
of 1024 exceeded. >>
During evaluation of In[77]:= $RecursionLimit::reclim: Recursion depth
of 1024 exceeded. >>
During evaluation of In[77]:= General::stop: Further output of
$RecursionLimit::reclim will be suppressed during this calculation. >>

• Follow-Ups:
  • Re: FullForm OK but StandardForm fails
    • From: Carl Woll <carlw@wolfram.com>