If i know good, the result variable exists in function without declare it. Use result instead function name.
#Tsch : Balázs Csaba > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Peter Vreman > Sent: Wednesday, September 03, 2003 8:15 AM > To: [EMAIL PROTECTED] > Subject: Re: [fpc-pascal]use of funct identifier in funct body > > > > Consider two implementations of the same function: > > > > Implementation 1 (the old way): > > > > function num_listing (n : word) : ansistring; > > var i : word; num : string; result : ansistring; > > begin > > result := ''; > > for i := to n do begin > > str (n, num); > > result := result + num; end; > > num_listing := result; > > end; > > > > Implementation 2 (possible because fpc permits nonrecursive > use of the > > function identifer): > > > > function num_listing (n : word) : ansistring; > > var i : word; num : string; > > begin > > num_listing := ''; > > for i := to n do begin > > str (n, num); > > num_listing := num_listing + num; end; > > end; > > > > Which performs better under fpc? In other words, do we incur a > > performance penalty in #2 for the nonrecursive use of the function > > identifier, particularly in a tight loop as shown? Or does the > > additional variable and additional assignment at the end of > #1 make it > > the loser? I know I could run a test, but I want to hear > the wisdom > > of the compiler writers. Thanks. > > The #2 is faster. There is no penalty for the use of the > function identifier. > > > > > _______________________________________________ > fpc-pascal maillist - [EMAIL PROTECTED] > http://lists.freepascal.org/mailman/listinfo/fpc-pascal > _______________________________________________ fpc-pascal maillist - [EMAIL PROTECTED] http://lists.freepascal.org/mailman/listinfo/fpc-pascal
