sequences.modified: little bit more cleanup.
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baddc58f93
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fb382b52c7
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@ -16,15 +16,13 @@ GENERIC: modified-set-nth ( elt n seq -- )
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M: modified set-nth modified-set-nth ;
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M: modified set-nth-unsafe modified-set-nth ;
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INSTANCE: modified sequence
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INSTANCE: modified virtual-sequence
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TUPLE: 1modified < modified seq ;
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M: modified length seq>> length ;
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M: modified set-length seq>> set-length ;
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M: 1modified like seq>> like ;
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M: 1modified new-sequence seq>> new-sequence ;
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M: 1modified length seq>> length ;
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M: 1modified set-length seq>> set-length ;
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M: 1modified virtual-exemplar seq>> ;
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TUPLE: scaled < 1modified c ;
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@ -33,12 +31,12 @@ C: <scaled> scaled
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: scale ( seq c -- new-seq )
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dupd <scaled> swap like ;
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M: scaled modified-nth ( n seq -- elt )
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M: scaled modified-nth
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[ seq>> nth ] [ c>> * ] bi ;
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M:: scaled modified-set-nth ( elt n seq -- )
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M: scaled modified-set-nth
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! don't set c to 0!
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elt seq c>> / n seq seq>> set-nth ;
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[ nip c>> / ] [ seq>> set-nth ] 2bi ;
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TUPLE: offset < 1modified n ;
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@ -47,11 +45,11 @@ C: <offset> offset
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: seq-offset ( seq n -- new-seq )
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dupd <offset> swap like ;
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M: offset modified-nth ( n seq -- elt )
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M: offset modified-nth
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[ seq>> nth ] [ n>> + ] bi ;
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M:: offset modified-set-nth ( elt n seq -- )
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elt seq n>> - n seq seq>> set-nth ;
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M: offset modified-set-nth
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[ nip n>> - ] [ seq>> set-nth ] 2bi ;
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TUPLE: summed < modified seqs ;
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@ -59,15 +57,15 @@ C: <summed> summed
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M: summed length seqs>> longest length ;
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M: summed modified-nth ( n seq -- elt )
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M: summed modified-nth
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seqs>> [ ?nth [ + ] when* ] with 0 swap reduce ;
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M: summed modified-set-nth ( elt n seq -- ) immutable ;
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M: summed modified-set-nth immutable ;
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M: summed set-length ( n seq -- )
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M: summed set-length
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seqs>> [ set-length ] with each ;
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M: summed virtual-exemplar ( summed -- seq )
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M: summed virtual-exemplar
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seqs>> ?first ;
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: <2summed> ( seq seq -- summed-seq ) 2array <summed> ;
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