> 2019/09/22 20:21、Alexander Ilin <[email protected]>のメール:
>
> I use `loop` or `while`, depending on the details.
Hello. Thank you for your answer.
I rewrote my program using `loop 'and `while'. The library I'm currently
building is an extended port from Ruby's one, and I used `with-return`
to mimic the code.
The use of `with-return` in this code, which does a lot of repetition,
seems to have been a very bad choice.
The zebra puzzle is now running about 20 times faster than before.
USING: factor-logica lists ;
IN: factor-logica.test.zebra
LOGIC-PREDS: houseso neighboro zebrao watero nexto lefto ;
LOGIC-VARS: Hs A B Ls X Y ;
SYMBOLS: red blue green white yellow ;
SYMBOLS: english swede dane norwegian german ;
SYMBOLS: dog cat birds horse zebra ;
SYMBOLS: tea coffee beer milk water ;
SYMBOLS: pall-mall dunhill blue-master prince blend ;
TUPLE: house color nationality drink smoke pet ;
{ houseso Hs X Y } {
{ (=) Hs L{ ! #1
T{ house f _ norwegian _ _ _ } ! #10
T{ house f blue _ _ _ _ } ! #15
T{ house f _ _ milk _ _ } _ _ } } ! #9
{ membero T{ house f red english _ _ _ } Hs } ! #2
{ membero T{ house f _ swede _ _ dog } Hs } ! #3
{ membero T{ house f _ dane tea _ _ } Hs } ! #4
{ lefto T{ house f green _ _ _ _ } T{ house f white _ _ _ _ } Hs } ! #5
{ membero T{ house f green _ coffee _ _ } Hs } ! #6
{ membero T{ house f _ _ _ pall-mall birds } Hs } ! #7
{ membero T{ house f yellow _ _ dunhill _ } Hs } ! #8
{ nexto T{ house f _ _ _ blend _ } T{ house f _ _ _ _ cat } Hs } ! #11
{ nexto T{ house f _ _ _ dunhill _ } T{ house f _ _ _ _ horse } Hs } ! #12
{ membero T{ house f _ _ beer blue-master _ } Hs } ! #13
{ membero T{ house f _ german _ prince _ } Hs } ! #14
{ nexto T{ house f _ _ water _ _ } T{ house f _ _ _ blend _ } Hs } ! #16
{ membero T{ house f _ X water _ _ } Hs }
{ membero T{ house f _ Y _ _ zebra } Hs }
} si
{ nexto A B Ls } {
{ appendo _ [ A B _ cons cons ] Ls } vel
{ appendo _ [ B A _ cons cons ] Ls }
} si
{ lefto A B Ls } { appendo _ [ A B _ cons cons ] Ls } si
IN: scratchpad { houseso Hs X Y } query .
{
H{
{
Hs
L{
T{ house
{ color yellow }
{ nationality norwegian }
{ drink water }
{ smoke dunhill }
{ pet cat }
}
T{ house
{ color blue }
{ nationality dane }
{ drink tea }
{ smoke blend }
{ pet horse }
}
T{ house
{ color red }
{ nationality english }
{ drink milk }
{ smoke pall-mall }
{ pet birds }
}
T{ house
{ color green }
{ nationality german }
{ drink coffee }
{ smoke prince }
{ pet zebra }
}
T{ house
{ color white }
{ nationality swede }
{ drink beer }
{ smoke blue-master }
{ pet dog }
}
}
}
{ X norwegian }
{ Y german }
}
}
IN: scratchpad [ 1000 [ { houseso Hs X Y } query drop ] times ] time
Running time: 20.393989632 seconds
--
KUSUMOTO Norio
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