ListReverse

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Revision as of 03:38, 29 May 2010 by Void Singer (Talk | contribs)

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User-Defined Function: list uListReverse( list vLstSrc );

Returns a list that is vLstSrc with the elements in reverse order

  • vLstSrc: source list to reverse


Smaller Code:

  • LSO: 156 Bytes
  • MONO: 512 Bytes

<lsl>list uListReverse( list vLstSrc ){

   integer vIntCnt = (vLstSrc != []);
   while (vIntCnt){
       vLstSrc += llList2List( vLstSrc, (vIntCnt = ~-vIntCnt), vIntCnt );
       vLstSrc = llDeleteSubList( vLstSrc, vIntCnt, vIntCnt );
   }
   return vLstSrc;

} /*//-- Anti-License Text --//*/ /*// Contributed Freely to the Public Domain without limitation. //*/ /*// 2009 (CC0) [ http://creativecommons.org/publicdomain/zero/1.0 ] //*/ /*// Void Singer [ https://wiki.secondlife.com/wiki/User:Void_Singer ] //*/ /*//-- --//*/</lsl>

Faster Code:

  • LSO: 160 Bytes
  • MONO: 512 Bytes

<lsl>list uListReverse( list vLstSrc ){

   integer vIntCnt = (vLstSrc != []);
   while (vIntCnt){
       vLstSrc += llList2List( vLstSrc, (vIntCnt = ~-vIntCnt), vIntCnt );
   }
   return llList2List( vLstSrc, (vLstSrc != []) >> 1, -1 );

} /*//-- Anti-License Text --//*/ /*// Contributed Freely to the Public Domain without limitation. //*/ /*// 2009 (CC0) [ http://creativecommons.org/publicdomain/zero/1.0 ] //*/ /*// Void Singer [ https://wiki.secondlife.com/wiki/User:Void_Singer ] //*/

/*//-- --//*/</lsl>

Caveats

  • The "Faster" version doubles the list size internally, and is more likely to cause a stack/heap collision(script crash) with large lists and/or limited free memory

Notes