Pastes New Paste

Paste: 99 bottles; help!

Author: mnestic
Mode: factor
Date: Tue, 13 Jan 2009 19:47:51
Plain Text | 
! I made sure to not use any shufflers (the last one was a dup
! where the keep is used) but I don't think this is idiomatic
! or clean.  Please help if you see this; can't get to IRC!

: bottle ( -- quot )
    [
        [
            [
                [ # " bottles of beer on the wall,\n" % ]
                [ # " bottles of beer.\n" % ] bi
            ] keep
            "Take one down, pass it around,\n" %
            1- # " bottles of beer on the wall\n" %
        ] " " make print
    ] ;

: last-verse ( -- )
    "Go to the store and buy some more," 
    "No more bottles beer on the wall!" [ print ] bi@ ;

: bottles ( n -- )
    1 [a,b] bottle each last-verse ;

Annotation: my first factor bottle song ;)

Author: Arne Ehrlich
Mode: factor
Date: Thu, 9 Apr 2009 08:11:37
Plain Text | 
USING:  kernel math math.ranges io sequences math.parser make arrays combinators unicode.case ;
IN: bottles

PREDICATE: no < integer 0 <= ;
PREDICATE: one < integer 1 = ;
PREDICATE: some < integer 1 > ;

GENERIC: bottle ( n -- s )
M: no bottle drop "No more bottles" ;
M: one bottle drop "One bottle" ;
M: some bottle [ # " bottles" % ] "" make ;

: bob ( n -- s ) [ bottle % " of beer" % ] "" make  ;
: bobw ( n -- s ) [ bob % " on the wall.\n" % ] "" make ;
: list-bottles ( n -- s ) [ bobw >lower ] [ bob ] bi [ % ", " % % ] "" make ;
: take-one ( n -- s )  dup 1 < 
    [ drop 99 "Go to the store and buy some more, " ] 
    [ 1- "Take one down, pass it around, " ] if swap bobw  >lower 2array concat ;


: verse ( n -- s  )  [ list-bottles ] [ take-one ] bi 2array concat ;

: song ( n -- ) 0 [a,b] [ verse print ] each ;

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