Mailing List Archive: 49091 messages
  • Home
  • Script library
  • AltME Archive
  • Mailing list
  • Articles Index
  • Site search
 

Hash: Re: Rebol API to DyBASE

 [1/1] from: fsievert::uos::de at: 18-Dec-2003 13:50


Maybe you will want to use this. You can add /case to the find to make it faster for strings. ; -- script: %hash.r REBOL [ title: "hash" author: "Frank Sievertsen" ; version: 1.0.0 purpose: { Hash-Test --------- hash! - Datatype key-type: string put: 0:00:07 get: 0:00:30 remove: 0:00:25 key-type: integer put: 0:00:21 get: 0:00:26 remove: 0:00:37 hash - Object key-type: string put: 0:00:01 get: 0:00:14 remove: 0:00:01 key-type: integer put: 0:00 get: 0:00:13 remove: 0:00:01 } ] hash: make object! [ size: 1000 block: none init: func [/with size [integer!]] [ if with [self/size: size] block: array reduce [self/size 0] idcount: 0 () ] checksum: func [key] [ if not any-string? key [ key: mold key ] system/words/checksum key ] insert: func [key val /local blk tmp] [ blk: pick block (checksum key) // (size - 1) + 1 either tmp: find/skip blk key 2 [ change/only next tmp :val ] [ repend blk [:key :val] ] :val ] remove: func [key /local blk tmp] [ blk: pick block (checksum key) // (size - 1) + 1 if tmp: find/skip blk key 2 [ system/words/remove/part tmp 2 ] self ] select: func [key /local blk tmp] [ blk: pick block (checksum key) // (size - 1) + 1 if tmp: find/skip blk key 2 [ return second tmp ] ] idcount: 0 id: func [key] [ any [ select key insert key idcount: idcount + 1 ] ] add: func [key val] [ insert key (any [(select key) 0]) + val ] to-block: func [/local out] [ out: copy [] foreach bl block [append out bl] out ] init ] ; Script: hash-test REBOL [] do %hash.r hash-test: func [ put [function!] get [function!] remove [function!] /local t many ] [ foreach conv reduce [string! integer!] [ print ["key-type:" conv] print [conv type? conv] many: 10000 t: now/time repeat z many [ put to conv z z ] print [" put:" now/time - t] t: now/time loop 20 [ repeat z many [ get to conv z ] ] print [" get:" now/time - t] t: now/time repeat z many [ remove to conv z ] print [" remove:" now/time - t] ] ] print "Hash-Test" print "---------" print "^/hash! - Datatype^/" h: make hash! 10000 hash-test func [key val] [ repend h [key val] ] func [key] [ select/skip h key 2 ] func [key] [ remove/part find/skip h key 2 2 ] print "^/hash - Object^/" h: make hash [] hash-test func [key val] [ h/insert key val ] func [key] [ h/select key ] func [key] [ h/remove key ]