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Re: ReplaceAll in If Statement


This happends because
a/.{opts} evaluates to {True} and not to True

Hope this helps,

jmt


On Wed, 25 Aug 1999, Tom Compton wrote:
> In the following sequence I expected z to evaluate to 1 in the
> Module.  It appears that the test in the module does not
> evaluate to either True or False.  I don't understand why.
> Can anyone explain?
> 
> In[1]:=
> opList={a->True};
> 
> In[2]:=
> test[opts___]:=Module[{},
> If[a /. {opts}, z=1, z=2, z=3];
> {a, z} /. {opts}]
> 
> In[3]:=
> test[opList]
> Out[3]=
> {{True,3}}
> 
> 
> 
> Tom Compton


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