Thanks Bob for the answer.

I was thinking that it was more general than that. I was thinking that 
when you provided an example it was general examples and not that specific.

My understanding was wrong. This helps me understand the results I saw 
and how to use the Method Finder correctly.

Thanks again.

Jimmie Houchin

Bob Arning wrote:
> Jimmie,
> 
> When you type 
> 
> 	'abc' . 2 . $b
> 
> into the MethodFinder, you are asking, "What method(s) exists that, when sent to the string 'abc' with the argument 2, answers the character $b?" You could also think of solving the following expression:
> 
> 	('abc' x: 2) = $b
> 
> for the selector #x:.
> 
> When you typed this into the MethodFinder, you got several answers, one of them being #at:. This is because
> 
> 	('abc' at: 2) = $b 
> 
> is true. When you changed something, like 'abc' to 'zzz', then #at: was no longer a valid answer
> 
> 	('zzz' at: 2) = $b
> 
> is definitely false. Not only were #at: and its two variants no longer valid answers, the MethodFinder could not find any method that would be valid and that's what it was saying to you.
> 
> Cheers,
> Bob
> 
> On Fri, 17 Jan 2003 11:41:37 -0600 Jimmie Houchin <jhouchin at texoma.net> wrote:
> 
>>I am reading some in Mark's book (white).
>>
>>It's talking about the Method Finder.
>>I playing with it using the example.
>>
>>The example is:
>>
>>'abc' . 2 . $b
>>
>>I accept and get similar results to the book.
>>
>>To my understanding of the above I am providing an example of a
>> 'string' receiver . integer argument . character answer
>>
>>So I play with it changing the string, the integer and the character.
>>
>>Depending on how I change the string, integer, character changes the 
>>results.
>>
>>Changing the 'abc' to 'zzz' gets an error.
>>  While 'bbb' 'bb' 'b' works and 'aaa' 'aa' 'a' fails.
>>Changing the 2 to 3 (or most anything else) gets an error.
>>Changing the $b to c (or most anything else) gets an error.
>>
>>All of the above changes were done in isolation leaving other parts as 
>>they were in the example.
>>
>>Error message:  No single method does that function.
>>
>>Am I misunderstanding something about the Method Finder?
>>In my examples above I did not change the types of the information 
>>merely small changes to content.
>>
>>Any help in understanding this is greatly appreciated.
> 
> 
> 
>