You're running only substring and your modifiedSubstring. A piece of code segment cannot tell much how you use substring and your modifiedSubstring.
For your information, using blob should be able to take less than 2 seconds in compiled. Alan Chan 4D iNug Technical <[email protected]> writes: >ok - doing some testing and recoding. >I do not quite understand.... > >I wrote code to implement substring (see far below) >I use it in a parsing routine (see below) on a text block of 2.7 >million characters. >time to process the entire block : 36.5 sec. > >I use the exact same code, using 4D's Substring command >Time to process the entire block : 129.8 sec. > >Why is the (presumably) compiled C code SLOWER, then Interpreted 4D >code? >by a factor of 4? > > >--------- >Parsing Routine >(initialization code removed) >For ($i;1;$How_Many) >$Start_Loc:=l_Last_Position+1 >$Found_Location:=utl_text_Position ($Find;$Source;$Start_Loc) > >If ($Found_Location>0) //found >l_Last_Position:=$Find_Length+$Found_Location-1 >Else >$i:=utl_Exit_Loop >End if >End for > >If ($i=MAXLONG) //not found. or not found enough >$Return_Text:=utl_text_Faster_Substring ($Source;$Start_Loc) >Else //found requested occurence count of Find >$Return_Text:=utl_text_Faster_Substring($Source;$Start_Loc;$Found_Location-1) >End if >$0:=$Return_Text ********************************************************************** 4D Internet Users Group (4D iNUG) FAQ: http://lists.4d.com/faqnug.html Archive: http://lists.4d.com/archives.html Options: http://lists.4d.com/mailman/options/4d_tech Unsub: mailto:[email protected] **********************************************************************
