50 lines
1.2 KiB
Factor
Executable File
50 lines
1.2 KiB
Factor
Executable File
USING: arrays assocs kernel vectors sequences namespaces
|
|
random math.parser math fry ;
|
|
|
|
IN: assocs.lib
|
|
|
|
: set-assoc-stack ( value key seq -- )
|
|
dupd [ key? ] with find-last nip set-at ;
|
|
|
|
: at-default ( key assoc -- value/key )
|
|
dupd at [ nip ] when* ;
|
|
|
|
: replace-at ( assoc value key -- assoc )
|
|
>r >r dup r> 1vector r> rot set-at ;
|
|
|
|
: peek-at* ( assoc key -- obj ? )
|
|
swap at* dup [ >r peek r> ] when ;
|
|
|
|
: peek-at ( assoc key -- obj )
|
|
peek-at* drop ;
|
|
|
|
: >multi-assoc ( assoc -- new-assoc )
|
|
[ 1vector ] assoc-map ;
|
|
|
|
: multi-assoc-each ( assoc quot -- )
|
|
[ with each ] curry assoc-each ; inline
|
|
|
|
: insert ( value variable -- ) namespace push-at ;
|
|
|
|
: generate-key ( assoc -- str )
|
|
>r 32 random-bits >hex r>
|
|
2dup key? [ nip generate-key ] [ drop ] if ;
|
|
|
|
: set-at-unique ( value assoc -- key )
|
|
dup generate-key [ swap set-at ] keep ;
|
|
|
|
: histogram ( assoc quot -- assoc' )
|
|
H{ } clone [
|
|
swap [ change-at ] 2curry assoc-each
|
|
] keep ; inline
|
|
|
|
: ?at ( obj assoc -- value/obj ? )
|
|
dupd at* [ [ nip ] [ drop ] if ] keep ;
|
|
|
|
: if-at ( obj assoc quot1 quot2 -- )
|
|
[ ?at ] 2dip if ; inline
|
|
|
|
: when-at ( obj assoc quot -- ) [ ] if-at ; inline
|
|
|
|
: unless-at ( obj assoc quot -- ) [ ] swap if-at ; inline
|