18 Dec
2007
18 Dec
'07
8:17 p.m.
Doug,
((3 @ 4) respondsTo: #<=) answers true here, the rest are confusing because you are sending #respondsTo: to a class, whereas you really want to know if its instances respond to certain messages, try
Array with: ((3 @ 4) respondsTo: #<=) with: ((3 @ 4) respondsTo: #abs) with: ((3 @ 4) respondsTo: #hash) with: ((3 @ 4) respondsTo: #storeOn:)
Cheers,
-Boris
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Thank you.
> -----Original Message-----
> From: squeak-dev-bounces@lists.squeakfoundation.org
[mailto:squeak-dev-
> bounces@lists.squeakfoundation.org] On Behalf Of Doug Edmunds
> Sent: Tuesday, December 18, 2007 10:51 AM
> To: squeak-dev@lists.squeakfoundation.org
> Subject: respondsTo: bug
>
> Squeak 3.9 #7067
>
> I happened to be comparing Squeak to Dolphin CE, and ran across
> this bug in Squeak relating to respondsTo:
>
> (3 @ 4) respondsTo: #<=. "Squeak reports this as false"
>
> However:
>
> (3 @ 4) <= (10 @ 15). "true"
>
> (3 @ 4) <= (1 @ 15). "false"
>
> Trying other methods for Point, I get many similar 'false' results
when
> sending 'respondsTo:' to Point (but I also get many correct results).
>
> ie.
>
> Point respondsTo: #abs. "false"
> however,
> Point respondsTo: #hash. "true"
> Point respondsTo: #storeOn:. true
>
> Point respondsTo: #x. false
> but
> (3 @ 4) x. "3"
>
> Point respondsTo: #y. false
> but
> (3 @ 4) y. "4"
>
> There does not seem to be any pattern to when
> respondsTo: works correctly and when it doesn't.
>
> -- dae
>
