Berkeley CSUA MOTD:Entry 17663
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2025/07/08 [General] UID:1000 Activity:popular
7/8     

2000/3/1-2 [Computer/Theory, Computer/SW/Languages/Java] UID:17663 Activity:high
2/29    What's the difference between a context-free-grammar and a
        context-sensitive-grammar?
        \_ Context-free: a rule maps a non-terminal onto a string of
           non-terminals and terminals; decidable by a pushdown automaton
           Context-sensitive: a rule maps a string of terminals and
           non-terminals to a _longer_ string of terminals and non-terminals;
           decidable by a linear-bounded turing machine, but not by a PDA.
           Universal: a rule maps a string of terminals and non-terminals
           onto any other string of terminals and non-terminals (aka
           Universal Rewrite Rules), decidable by a TM, but not always by
           a LBTM/PDA. For more, RTFM; the motd is not a math book. -alexf
        \_ I wonder who is asking 172 questions on the motd? -brg
           \_ A lazy idiot.  -- ilyas
              \_ Yes, and anyone dumb enough to take 172 is just an idiot.
                 \_ Hey, for the record, 172 was my favourite class at Cal.
                    But asking such ... class-related questions on the motd
                    seems pretty lame to me.  The least you could do is
                    troll well.  -- ilyas
                    \_ And mie favourite klass was Collej Righting 1A
                       becouse we lerned to spel words like favourite.
                    \_ Anyone who doesn't like the same classes as ilyas is a
                       troll.
                       \_ Anyone who says stupid shit like:

              '\_ Yes, and anyone dumb enough to take 172 is just an idiot.'

                          is a troll. -- ilyas
                          \_ ilyas hath spoken and so shall it be!
                \_ I liked 172 a lot, even though I got my ass kicked and
                I am definetely not into math...        -muchandr
         \_ more like 164 I bet.
            \_ 164 almost never covers CSLs/CSGs
                \) why did everyone bitch about my 164 class then? -aspo
                   \_ Who cares?
                \_ 164 is boring. 264 is more interesting.
2025/07/08 [General] UID:1000 Activity:popular
7/8     

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