R help - Aug 2004 - all.equal and names?

How can I compare two objects for structure, names, values, etc.?  
With R 1.9.1 under Windows 2000, the obvious choice "all.equal"
ignores
names and compares only values: 

 > all.equal(1, c(a=1))
[1] TRUE

      Under S-Plus 6.2, I get the comparison I expected: 

 > all.equal(1, c(a = 1))
[1] "target, current classes differ: integer : 
named"                                                   
[2] "class of target is \"integer\", class of current is
\"named\"
(coercing current to class of target)"

      Thanks,
      Spencer Graves

On Wed, 18 Aug 2004 10:27:49 -0400, Spencer Graves
<spencer.graves at pdf.com> wrote :
>      How can I compare two objects for structure, names, values, etc.?  
>With R 1.9.1 under Windows 2000, the obvious choice "all.equal"
ignores
>names and compares only values: 
>
> > all.equal(1, c(a=1))
>[1] TRUE
>
>      Under S-Plus 6.2, I get the comparison I expected: 
>
> > all.equal(1, c(a = 1))
>[1] "target, current classes differ: integer : 
>named"                                                   
>[2] "class of target is \"integer\", class of current is
\"named\"
>(coercing current to class of target)"
If you want the explanation you're out of luck, but identical() does
the test:
> identical(1, c(a = 1))
[1] FALSE

Duncan Murdoch