From: Doug Coleman <doug.coleman@gmail.com>
Date: Mon, 8 Aug 2022 06:28:00 +0000 (-0500)
Subject: assocs.extras: add collect-assoc-by and friends
X-Git-Tag: 0.99~1163
X-Git-Url: https://gitweb.factorcode.org/gitweb.cgi?p=factor.git;a=commitdiff_plain;h=8d6a9d73acbca166c246a407a33c637b5d0ffb77

assocs.extras: add collect-assoc-by and friends
---

diff --git a/extra/assocs/extras/extras-tests.factor b/extra/assocs/extras/extras-tests.factor
index e3211882c9..25ded3f642 100644
--- a/extra/assocs/extras/extras-tests.factor
+++ b/extra/assocs/extras/extras-tests.factor
@@ -1,5 +1,11 @@
 USING: arrays assocs.extras kernel math math.order sequences tools.test ;
 
+{
+    H{ { 1 V{ 10 } } { 2 V{ 10 } } { 3 V{ 10 } } { 4 V{ 10 } } { 5 V{ 10 } } }
+} [
+    H{ } clone 10 { 1 2 3 4 5 } pick push-at-each
+] unit-test
+
 { f } [ f { } deep-at ] unit-test
 { f } [ f { "foo" } deep-at ] unit-test
 { f } [ H{ } { 1 2 3 } deep-at ] unit-test
@@ -165,12 +171,51 @@ USING: arrays assocs.extras kernel math math.order sequences tools.test ;
     [ min ] V{ } assoc-collapse-as
 ] unit-test
 
+
 {
-    H{ { 1 V{ 10 } } { 2 V{ 10 } } { 3 V{ 10 } } { 4 V{ 10 } } { 5 V{ 10 } } }
+    H{
+        { 41 V{ 401 } }
+        { 10 V{ 100 } }
+        { 20 V{ 200 } }
+        { 30 V{ 300 } }
+    }
 } [
-    H{ } clone 10 { 1 2 3 4 5 } pick push-at-each
+    { { 10 100 } { 20 200 } { 30 300 } { 41 401 } }
+    [ ] collect-assoc-by
+] unit-test
+
+{
+    H{ { t V{ 100 200 300 } } { f V{ 401 } } }
+} [
+    { { 10 100 } { 20 200 } { 30 300 } { 41 401 } }
+    [ [ even? ] dip ] collect-assoc-by
+] unit-test
+
+{
+    H{
+        { t V{ { 10 100 } { 20 200 } { 30 300 } } }
+        { f V{ { 41 401 } } }
+    }
+} [
+    { { 10 100 } { 20 200 } { 30 300 } { 41 401 } }
+    [ [ drop even? ] [ 2array ] 2bi ] collect-assoc-by
+] unit-test
+
+{
+    H{ { t V{ 10 20 30 } } { f V{ 41 } } }
+} [
+    { { 10 100 } { 20 200 } { 30 300 } { 41 401 } }
+    [ even? ] collect-key-by
+] unit-test
+
+{
+    H{ { t V{ 100 200 300 } } { f V{ 401 } } }
+} [
+    { { 10 100 } { 20 200 } { 30 300 } { 41 401 } }
+    [ even? ] collect-value-by
 ] unit-test
 
+
 {
     H{
         { 1 V{ 10 20 30 40 50 60 } }
@@ -182,4 +227,56 @@ USING: arrays assocs.extras kernel math math.order sequences tools.test ;
 } [
     { 10 20 30 } [ drop { 1 2 3 4 5 } ] collect-by-multi
     { 40 50 60 } [ drop { 1 2 3 4 5 } ] collect-by-multi!
+] unit-test
+
+
+
+{
+    H{
+        { 20 V{ 20 } }
+        { 21 V{ 20 } }
+        { 41 V{ 41 } }
+        { 10 V{ 10 } }
+        { 11 V{ 10 } }
+        { 42 V{ 41 } }
+        { 30 V{ 30 } }
+        { 31 V{ 30 } }
+    }
+} [
+    { { 10 100 } { 20 200 } { 30 300 } { 41 401 } }
+    [ dup 1 + 2array ] collect-key-by-multi
+] unit-test
+
+
+{
+    H{
+        { 401 V{ 401 } }
+        { 402 V{ 401 } }
+        { 100 V{ 100 } }
+        { 101 V{ 100 } }
+        { 200 V{ 200 } }
+        { 201 V{ 200 } }
+        { 300 V{ 300 } }
+        { 301 V{ 300 } }
+    }
+} [
+    { { 10 100 } { 20 200 } { 30 300 } { 41 401 } }
+    [ dup 1 + 2array ] collect-value-by-multi
+] unit-test
+
+
+{
+    H{
+        { 20 V{ 200 } }
+        { 21 V{ 200 } }
+        { 41 V{ 401 } }
+        { 10 V{ 100 } }
+        { 11 V{ 100 } }
+        { 42 V{ 401 } }
+        { 30 V{ 300 } }
+        { 31 V{ 300 } }
+    }
+} [
+    { { 10 100 } { 20 200 } { 30 300 } { 41 401 } }
+    [ [ dup 1 + 2array ] dip ] collect-assoc-by-multi
 ] unit-test
\ No newline at end of file
diff --git a/extra/assocs/extras/extras.factor b/extra/assocs/extras/extras.factor
index 98f9ebbb3e..77f8d99102 100644
--- a/extra/assocs/extras/extras.factor
+++ b/extra/assocs/extras/extras.factor
@@ -226,22 +226,52 @@ PRIVATE>
 : counts ( seq elts -- counts )
     [ histogram ] dip intersect-keys ;
 
-: collect-key-by ( ... seq quot: ( ... obj -- ... key ) -- ... assoc )
-    [ keep swap ] curry H{ } clone
-    [ '[ @ [ first ] dip _ push-at ] each ] keep ; inline
-
-: collect-value-by ( ... seq quot: ( ... obj -- ... key ) -- ... assoc )
-    [ keep swap ] curry H{ } clone
-    [ '[ @ [ second ] dip _ push-at ] each ] keep ; inline
-
 : histogram-diff ( hashtable1 hashtable2 -- hashtable3 )
     [ neg swap pick at+ ] assoc-each
     [ 0 > ] filter-values ;
 
-: collect-by-multi! ( ... assoc seq quot: ( ... obj -- ... key ) -- ... assoc )
+: collect-by-multi! ( ... assoc seq quot: ( ... obj -- ... new-keys ) -- ... assoc )
     [ keep swap ] curry rot [
         [ push-at-each ] curry compose each
     ] keep ; inline
 
-: collect-by-multi ( ... seq quot: ( ... obj -- ... keys ) -- ... assoc )
+: collect-by-multi ( ... seq quot: ( ... obj -- ... new-keys ) -- ... assoc )
     [ H{ } clone ] 2dip collect-by-multi! ; inline
+
+
+: collect-assoc-by! ( ... assoc input-assoc quot: ( ... key value -- ... key' value' ) -- ... assoc )
+    rot [ '[ @ swap _ push-at ] assoc-each ] keep ; inline
+
+: collect-assoc-by ( ... input-assoc quot: ( ... key value -- ... key value ) -- ... assoc )
+    [ H{ } clone ] 2dip collect-assoc-by! ; inline
+
+: collect-key-by! ( ... assoc input-assoc quot: ( ... key -- ... new-key ) -- ... assoc )
+    rot [ '[ drop _ keep swap _ push-at ] assoc-each ] keep ; inline
+
+: collect-key-by ( ... input-assoc quot: ( ... key -- ... new-key ) -- ... assoc )
+    [ H{ } clone ] 2dip collect-key-by! ; inline
+
+: collect-value-by! ( ... assoc input-assoc quot: ( ... value -- ... new-key ) -- ... assoc )
+    rot [ '[ nip _ keep swap _ push-at ] assoc-each ] keep ; inline
+
+: collect-value-by ( ... input-assoc quot: ( ... value -- ... new-key ) -- ... assoc )
+    [ H{ } clone ] 2dip collect-value-by! ; inline
+
+
+: collect-assoc-by-multi! ( ... assoc input-assoc quot: ( ... key value -- ... new-keys value' ) -- ... assoc )
+    rot [ '[ @ swap _ B push-at-each ] assoc-each ] keep ; inline
+
+: collect-assoc-by-multi ( ... assoc quot: ( ... key value -- ... new-keys value' ) -- ... assoc )
+    [ H{ } clone ] 2dip collect-assoc-by-multi! ; inline
+
+: collect-key-by-multi! ( ... assoc input-assoc quot: ( ... key -- ... new-keys ) -- ... assoc )
+    rot [ '[ drop _ keep swap _ push-at-each ] assoc-each ] keep ; inline
+
+: collect-key-by-multi ( ... assoc quot: ( ... key -- ... new-keys ) -- ... assoc )
+    [ H{ } clone ] 2dip collect-key-by-multi! ; inline
+
+: collect-value-by-multi! ( ... assoc input-assoc quot: ( ... value -- ... new-keys ) -- ... assoc )
+    rot [ '[ nip _ keep swap _ push-at-each ] assoc-each ] keep ; inline
+
+: collect-value-by-multi ( ... assoc quot: ( ... value -- ... new-keys ) -- ... assoc )
+    [ H{ } clone ] 2dip collect-value-by-multi! ; inline