danny at cs.ttu.edu
Thu Apr 2 18:13:32 UTC 1992
Bay sent me the following program to reverse a string of characters:
_AddSlotsIfAbsent: ( | danny = () | )
danny _Define: ( |
parent* = traits oddball.
reverse: str = ( | rev <- '' |
str do: [ | :c | rev: c, rev ].
I did the _RunScript on this file and it went fine. However, when I type in
" reverse: 'backwards' " I received this message not understood error:
Message not understood
Message type: ImplicitSelf
Receiver: <4>: lobby
MethodHolder: <4>: lobby
Can you tell what I am doing wrong? Also, I am having trouble using the
list-specific selectors for collections. Do I need to define the objects
in a special way for these selectors? I do not seem to be having any trouble
with the other selectors.
danny at cs4sun.cs.ttu.edu
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