core: selector-for and collector-for are the wrong naming convention--they should be selector-as and collector-as because they take exemplars.

The exemplar is the starting length of the output sequence in collector-as, so add another collector-for-as that takes a seq that we are making a collector for.

basis/sequences/generalizations/generalizations.factor

@@ -95,19 +95,19 @@ MACRO: (ncollect) ( n -- quot )
 : mnmap ( m*seq quot m n -- result*n )
     2dup '[ [ _ npick ] dip swap _ dupn ] 2dip mnmap-as ; inline
 
-: ncollector-for ( quot exemplar... n -- quot' vec... )
+: ncollector-as ( quot exemplar... n -- quot' vec... )
     5 dupn '[
         [ [ length ] keep new-resizable ] _ napply
         [ [ [ push ] _ apply-curry _ spread* ] _ ncurry compose ] _ nkeep
     ] call ; inline
 
 : ncollector ( quot n -- quot' vec... )
-    [ V{ } swap dupn ] keep ncollector-for ; inline
+    [ V{ } swap dupn ] keep ncollector-as ; inline
 
 : nproduce-as ( pred quot exemplar... n -- seq... )
     7 dupn '[
         _ ndup
-        [ _ ncollector-for [ while ] _ ndip ]
+        [ _ ncollector-as [ while ] _ ndip ]
         _ ncurry _ ndip
         [ like ] _ apply-curry _ spread*
     ] call ; inline

core/sequences/sequences-docs.factor

@@ -1944,12 +1944,13 @@ ARTICLE: "sequences-combinator-implementation" "Implementing sequence combinator
 "Creating a new sequence unconditionally:"
 { $subsections
     collector
-    collector-for
+    collector-as
+    collector-for-as
 }
 "Creating a new sequence conditionally:"
 { $subsections
     selector
-    selector-for
+    selector-as
     2selector
 } ;
 

core/sequences/sequences.factor

@@ -551,19 +551,19 @@ PRIVATE>
 
 <PRIVATE
 
-: (selector-for) ( quot length exemplar -- selector accum )
+: (selector-as) ( quot length exemplar -- selector accum )
     new-resizable [ [ push-if ] 2curry ] keep ; inline
 
 PRIVATE>
 
-: selector-for ( quot exemplar -- selector accum )
+: selector-as ( quot exemplar -- selector accum )
-    [ length ] keep (selector-for) ; inline
+    [ length ] keep (selector-as) ; inline
 
 : selector ( quot -- selector accum )
-    V{ } selector-for ; inline
+    V{ } selector-as ; inline
 
 : filter-as ( ... seq quot: ( ... elt -- ... ? ) exemplar -- ... subseq )
-    pick length over [ (selector-for) [ each ] dip ] 2curry dip like ; inline
+    pick length over [ (selector-as) [ each ] dip ] 2curry dip like ; inline
 
 : filter ( ... seq quot: ( ... elt -- ... ? ) -- ... subseq )
     over filter-as ; inline
@@ -583,14 +583,20 @@ PRIVATE>
 : partition ( ... seq quot: ( ... elt -- ... ? ) -- ... trueseq falseseq )
     over [ 2selector [ each ] 2dip ] dip [ like ] curry bi@ ; inline
 
-: collector-for ( quot exemplar -- quot' vec )
+: collector-for-as ( seq quot exemplar -- seq quot' vec )
+    [ over length ] dip new-resizable [ [ push ] curry compose ] keep ; inline
+
+: collector-as ( quot exemplar -- quot' vec )
     [ length ] keep new-resizable [ [ push ] curry compose ] keep ; inline
 
+: collector-for ( seq quot -- seq quot' vec )
+    V{ } collector-for-as ; inline
+
 : collector ( quot -- quot' vec )
-    V{ } collector-for ; inline
+    V{ } collector-as ; inline
 
 : produce-as ( ..a pred: ( ..a -- ..b ? ) quot: ( ..b -- ..a obj ) exemplar -- ..b seq )
-    dup [ collector-for [ while ] dip ] curry dip like ; inline
+    dup [ collector-as [ while ] dip ] curry dip like ; inline
 
 : produce ( ..a pred: ( ..a -- ..b ? ) quot: ( ..b -- ..a obj ) -- ..b seq )
     { } produce-as ; inline

extra/forestdb/lib/lib.factor

@@ -297,11 +297,11 @@ T{ doc
 
 <PRIVATE
 
-: collector-for-when ( quot exemplar -- quot' vec )
+: collector-when-as ( quot exemplar -- quot' vec )
     [ length ] keep new-resizable [ [ over [ push ] [ 2drop ] if ] curry compose ] keep ; inline
 
 : collector-when ( quot -- quot' vec )
-    V{ } collector-for-when ; inline
+    V{ } collector-when-as ; inline
 
 PRIVATE>
 

extra/sequences/extras/extras.factor

@@ -93,27 +93,27 @@ IN: sequences.extras
 
 <PRIVATE
 
-: (index-selector-for) ( quot length exampler -- selector accum )
+: (index-selector-as) ( quot length exampler -- selector accum )
     new-resizable [ [ push-if-index ] 2curry ] keep ; inline
 
-: (selector-for*) ( quot length exemplar -- selector accum )
+: (selector-as*) ( quot length exemplar -- selector accum )
     new-resizable [ [ push-if* ] 2curry ] keep ; inline
 
 PRIVATE>
 
-: index-selector-for ( quot exemplar -- selector accum )
+: index-selector-as ( quot exemplar -- selector accum )
-    [ length ] keep (index-selector-for) ; inline
+    [ length ] keep (index-selector-as) ; inline
 
 : index-selector ( quot -- selector accum )
-    V{ } index-selector-for ; inline
+    V{ } index-selector-as ; inline
 
-: selector-for* ( quot exemplar -- selector accum )
+: selector-as* ( quot exemplar -- selector accum )
-    [ length ] keep (selector-for*) ; inline
+    [ length ] keep (selector-as*) ; inline
 
-: selector* ( quot -- selector accum ) V{ } selector-for* ; inline
+: selector* ( quot -- selector accum ) V{ } selector-as* ; inline
 
 : filter-index-as ( ... seq quot: ( ... elt i -- ... ? ) exemplar -- ... seq' )
-    pick length over [ (index-selector-for) [ each-index ] dip ] 2curry dip like ; inline
+    pick length over [ (index-selector-as) [ each-index ] dip ] 2curry dip like ; inline
 
 : filter-index ( ... seq quot: ( ... elt i -- ... ? ) -- ... seq' )
     over filter-index-as ; inline
@@ -251,7 +251,7 @@ PRIVATE>
 
 : map-filter-as ( ... seq map-quot: ( ... elt -- ... newelt ) filter-quot: ( ... newelt -- ... ? ) exemplar -- ... subseq )
     [ pick ] dip swap length over
-    [ (selector-for) [ compose each ] dip ] 2curry dip like ; inline
+    [ (selector-as) [ compose each ] dip ] 2curry dip like ; inline
 
 : map-filter ( ... seq map-quot: ( ... elt -- ... newelt ) filter-quot: ( ... newelt -- ... ? ) -- ... subseq )
     pick map-filter-as ; inline
@@ -615,4 +615,4 @@ PRIVATE>
     '[ _ dip ] assoc-map ; inline
 
 : map-values ( assoc quot: ( value -- value' ) -- assoc )
-    '[ swap _ dip swap ] assoc-map ; inline
+    '[ swap _ dip swap ] assoc-map ; inline