1 ! Copyright (C) 2012 John Benediktsson, Doug Coleman
2 ! See http://factorcode.org/license.txt for BSD license
3 USING: arrays assocs assocs.private kernel math math.statistics
7 : deep-at ( assoc seq -- value/f )
10 : substitute! ( seq assoc -- seq )
13 : assoc-reduce ( ... assoc identity quot: ( ... prev key value -- next ) -- ... result )
14 [ >alist ] 2dip [ first2 ] prepose reduce ; inline
16 : reduce-keys ( ... assoc identity quot: ( ... prev elt -- ... next ) -- ... result )
17 [ drop ] prepose assoc-reduce ; inline
19 : reduce-values ( ... assoc identity quot: ( ... prev elt -- ... next ) -- ... result )
20 [ nip ] prepose assoc-reduce ; inline
22 : sum-keys ( assoc -- n ) 0 [ + ] reduce-keys ; inline
24 : sum-values ( assoc -- n ) 0 [ + ] reduce-values ; inline
26 : map-keys ( assoc quot: ( key -- key' ) -- assoc )
27 '[ _ dip ] assoc-map ; inline
29 : map-values ( assoc quot: ( value -- value' ) -- assoc )
30 '[ swap _ dip swap ] assoc-map ; inline
32 : filter-keys ( assoc quot: ( key -- key' ) -- assoc' )
33 '[ drop @ ] assoc-filter ; inline
35 : filter-values ( assoc quot: ( value -- value' ) -- assoc' )
36 '[ nip @ ] assoc-filter ; inline
38 : reject-keys ( assoc quot: ( key -- key' ) -- assoc' )
39 '[ drop @ ] assoc-reject ; inline
41 : reject-values ( assoc quot: ( value -- value' ) -- assoc' )
42 '[ nip @ ] assoc-reject ; inline
44 : rekey-new-assoc ( assoc keys -- newassoc )
45 [ tuck of ] with H{ } map>assoc ; inline
47 : rekey-assoc ( assoc keys -- assoc )
48 [ dup keys ] dip diff over [ delete-at ] curry each ; inline
50 : if-assoc-empty ( ..a assoc quot1: ( ..a -- ..b ) quot2: ( ..a assoc -- ..b ) -- ..b )
51 [ dup assoc-empty? ] [ [ drop ] prepose ] [ ] tri* if ; inline
53 : assoc-invert-as ( assoc exemplar -- newassoc )
54 [ swap ] swap assoc-map-as ;
56 : assoc-invert ( assoc -- newassoc )
59 : assoc-collect! ( assoc1 assoc2 -- assoc1 )
60 over [ push-at ] with-assoc assoc-each ;
62 : assoc-collect ( assoc1 assoc2 -- newassoc )
63 [ [ [ assoc-size ] bi@ + ] [ drop ] 2bi new-assoc ] 2keep
64 [ assoc-collect! ] bi@ ;
66 ! iterate over assoc2, replace conflicting values
68 : assoc-merge! ( assoc1 assoc2 quot: ( value1 value2 -- new-value ) -- assoc1' )
69 [| key2 val2 quot | val2 key2 pick
70 at* [ swap quot call ] [ drop ] if
71 key2 pick set-at ] curry assoc-each ; inline
73 ! Same as above, non-destructive
74 : assoc-merge ( assoc1 assoc2 quot: ( value1 value2 -- new-value ) -- new-assoc )
75 pick [ [ clone ] 2dip assoc-merge! ]
79 ! Successively apply assoc-merge operation
80 : assoc-collapse ( seq quot: ( value1 value2 -- new-value ) -- assoc )
83 [ [ unclip-slice H{ } or clone ] [ [ assoc-merge! ] curry ] bi* reduce ] if ; inline
85 : assoc-collapse! ( assoc seq quot: ( value1 value2 -- new-value ) -- assoc )
86 [ assoc-merge! ] curry each ; inline
88 : assoc-collapse-as ( seq quot: ( value1 value2 -- new-value ) exemplar -- assoc )
89 pick first assoc-size swap new-assoc
90 -rot assoc-collapse! ; inline
92 GENERIC: delete-value-at ( value assoc -- )
94 M: assoc delete-value-at
95 [ value-at* ] keep swap [ delete-at ] [ 2drop ] if ;
97 ERROR: key-exists value key assoc ;
98 : set-once-at ( value key assoc -- )
105 : kv-with ( obj assoc quot -- assoc curried )
106 swapd [ -rotd call ] 2curry ; inline
110 : (sequence>assoc) ( seq map-quot insert-quot assoc -- assoc )
111 [ swap curry compose each ] keep ; inline
113 : (sequence-index>assoc) ( seq map-quot insert-quot assoc -- assoc )
114 [ swap curry compose each-index ] keep ; inline
118 : sequence>assoc! ( assoc seq map-quot: ( x -- ..y ) insert-quot: ( ..y assoc -- ) -- assoc )
119 roll (sequence>assoc) ; inline
121 : assoc>object ( assoc map-quot insert-quot exemplar -- object )
122 clone [ swap curry compose assoc-each ] keep ; inline
124 : assoc>object! ( assoc seq map-quot: ( x -- ..y ) insert-quot: ( ..y assoc -- ) -- object )
125 roll assoc>object ; inline
127 : sequence>assoc ( seq map-quot insert-quot exemplar -- assoc )
128 clone (sequence>assoc) ; inline
130 : sequence-index>assoc ( seq map-quot insert-quot exemplar -- assoc )
131 clone (sequence-index>assoc) ; inline
133 : sequence-index>hashtable ( seq map-quot insert-quot -- hashtable )
134 H{ } sequence-index>assoc ; inline
136 : sequence>hashtable ( seq map-quot insert-quot -- hashtable )
137 H{ } sequence>assoc ; inline
139 : expand-keys-set-at-as ( assoc exemplar -- hashtable' )
141 [ swap dup sequence? [ 1array ] unless ]
142 [ '[ _ set-at ] with each ]
145 : expand-keys-set-at ( assoc -- hashtable' )
146 H{ } expand-keys-set-at-as ;
148 : expand-keys-push-at-as ( assoc exemplar -- hashtable' )
150 [ swap dup sequence? [ 1array ] unless ]
151 [ '[ _ push-at ] with each ]
154 : expand-keys-push-at ( assoc -- hashtable' )
155 H{ } expand-keys-push-at-as ; inline
157 : expand-keys-push-as ( assoc exemplar -- hashtable' )
159 [ [ dup sequence? [ 1array ] unless ] dip ]
160 [ '[ _ 2array _ push ] each ]
163 : expand-keys-push ( assoc -- hashtable' )
164 V{ } expand-keys-push-as ; inline
166 : expand-values-set-at-as ( assoc exemplar -- hashtable' )
168 [ dup sequence? [ 1array ] unless swap ]
169 [ '[ _ _ set-at ] each ]
172 : expand-values-set-at ( assoc -- hashtable' )
173 H{ } expand-values-set-at-as ; inline
175 : expand-values-push-at-as ( assoc exemplar -- hashtable' )
177 [ dup sequence? [ 1array ] unless swap ]
178 [ '[ _ _ push-at ] each ]
181 : expand-values-push-at ( assoc -- assoc )
182 H{ } expand-values-push-at-as ; inline
184 : expand-values-push-as ( assoc exemplar -- assoc )
186 [ dup sequence? [ 1array ] unless ]
187 [ '[ 2array _ push ] with each ]
190 : expand-values-push ( assoc -- sequence )
191 V{ } expand-values-push-as ; inline
193 : assoc-any-key? ( ... assoc quot: ( ... key -- ... ? ) -- ... ? )
194 [ drop ] prepose assoc-find 2nip ; inline
196 : assoc-any-value? ( ... assoc quot: ( ... key -- ... ? ) -- ... ? )
197 [ nip ] prepose assoc-find 2nip ; inline
199 : assoc-all-key? ( ... assoc quot: ( ... key -- ... ? ) -- ... ? )
200 [ not ] compose assoc-any-key? not ; inline
202 : assoc-all-value? ( ... assoc quot: ( ... key -- ... ? ) -- ... ? )
203 [ not ] compose assoc-any-value? not ; inline
205 : any-multi-key? ( assoc -- ? )
206 [ sequence? ] assoc-any-key? ;
208 : any-multi-value? ( assoc -- ? )
209 [ sequence? ] assoc-any-value? ;
211 : flatten-keys ( assoc -- assoc' )
212 dup any-multi-key? [ expand-keys-set-at flatten-keys ] when ;
214 : flatten-values ( assoc -- assoc' )
215 dup any-multi-value? [ expand-values-set-at flatten-values ] when ;
217 : intersect-keys ( assoc seq -- elts )
218 [ of ] with zip-with sift-values ; inline
220 : values-of ( assoc seq -- seq' )
221 [ of ] with map ; inline
223 : counts ( seq elts -- counts )
224 [ histogram ] dip intersect-keys ;