Default
Default[sym]
returns the default value of sym
when used as an Optional
pattern without a default specified.
Attributes[Default] := {Protected}
Simple examples
In[1]:= Default[Times] Out[1]= 1
In[2]:= Default[Plus] Out[2]= 0
Default[sym]
returns the default value of sym
when used as an Optional
pattern without a default specified.
Attributes[Default] := {Protected}
In[1]:= Default[Times] Out[1]= 1
In[2]:= Default[Plus] Out[2]= 0