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Author Topic: Function in Function and Result [SOLVED]  (Read 543 times)

trn76

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Function in Function and Result [SOLVED]
« on: October 30, 2020, 01:55:38 pm »
When I have a function within a function, how can I "access" the "main" Result?
...Yeah this example will not work, it is just an example - look at "<--- How to access "Main Function" Result?"

Code: Pascal  [Select][+][-]
  1.  
  2. // https://github.com/FChrisF/LLCL/blob/master/sources/SysUtils.pas#L563
  3. function Format(const sFormat: string; const Args: array of const): string;
  4. // supported: %% %s %d %x %.prec? %index:?  TRN: added ;
  5. var i, j, c, L: integer;
  6.     decim: string;
  7.  
  8.   function padding(const S, F: Char): boolean;
  9.   var u: integer;
  10.   begin
  11.     if (sFormat[i]=S) and (i+2<=L) and (c<=high(Args)) and
  12.        (ord(sFormat[i+1]) in [ord('1')..ord('9')]) and
  13.        (ord(sFormat[i+2]) in [ord('d'),ord('x'),ord('p')]) and
  14.        (Args[c].VType=vtInteger) then begin
  15.       u := Args[c].VInteger;
  16.       if sFormat[i+2]='d' then
  17.         decim := IntToStr(u) else
  18.         decim := IntToHex(u, ord(sFormat[i+1])-49);
  19.       for u := length(decim) to ord(sFormat[i+1])-49 do
  20.         decim := F + decim;
  21.       ..result := ..result+decim;    // <--- How to access "Main Function" Result?
  22.       Inc(c);
  23.       Inc(i, 2);
  24.       Result := True
  25.     end else Result := False;
  26.   end;
  27.  
  28. begin
  29.   if high(Args)<0 then begin
  30.     result := sFormat;
  31.     exit;
  32.   end;
  33.   result := '';
  34.   L := length(sFormat);
  35.   if L=0 then exit;
  36.   i := 1;
  37.   c := 0;
  38.   while (i<=L) do begin
  39.     j := i;
  40.     while (i<=L) and (sFormat[i]<>'%') do Inc(i);
  41.     case i-j of
  42.       0: ;
  43.       1: result := result+sFormat[j];
  44.       else result := result+copy(sFormat, j, i-j);
  45.     end;
  46.     Inc(i);
  47.     if i>L then break;
  48.     if (ord(sFormat[i]) in [ord('0')..ord('9')]) and (i<L) and
  49.        (sFormat[i+1]=':') then begin
  50.       c := ord(sFormat[i])-48;  // Format('%d %d %d %0:d %d',[1,2,3,4]) = '1 2 3 1 2'
  51.       Inc(i, 2);
  52.       if i>L then break;
  53.     end;
  54.     if sFormat[i]='%' then        // Format('%%') = '%'
  55.       result := result+'%' else   // Format('%.3d',[4]) = '004':
  56.     if padding('.', '0') else     // TRN zeros padding
  57.     if padding(';', ' ') else     // TRN space padding
  58.     //if (sFormat[i]='.') and (i+2<=L) and (c<=high(Args)) and
  59.     //   (ord(sFormat[i+1]) in [ord('1')..ord('9')]) and
  60.     //   (ord(sFormat[i+2]) in [ord('d'),ord('x'),ord('p')]) and
  61.     //   (Args[c].VType=vtInteger) then begin
  62.     //  j := Args[c].VInteger;
  63.     //  if sFormat[i+2]='d' then
  64.     //    decim := IntToStr(j) else
  65.     //    decim := IntToHex(j, ord(sFormat[i+1])-49);
  66.     //  for j := length(decim) to ord(sFormat[i+1])-49 do
  67.     //    decim := '0'+decim;
  68.     //  result := result+decim;
  69.     //  Inc(c);
  70.     //  Inc(i, 2);
  71.     //end else
  72.     if c<=high(Args) then begin
  73.       with Args[c] do
  74.       case sFormat[i] of
  75.       's': case VType of
  76.         vtString:     result := result+string(VString^);
  77.         vtAnsiString: result := result+string(VAnsiString);
  78.         vtPChar:      result := result+string(VPChar);
  79.         vtChar:       result := result+string(VChar);
  80.       'd': if VType=vtInteger then
  81.              result := result+IntToStr(VInteger) else
  82.            if VType=vtInt64 then
  83.              result := result+IntToStr(VInt64^);
  84.       'x','p': if VType in [vtInteger,vtPointer] then
  85.         result := result+IntToHex(VInteger,8);
  86.       end;
  87.       Inc(c);
  88.     end;
  89.     Inc(i);
  90.   end;
  91. end;
  92.  
  93.  


...aaahahahhaha I got it before I could post  ;D

Code: Pascal  [Select][+][-]
  1.  
  2. function Format(const sFormat: string; const Args: array of const): string;
  3. // supported: %% %s %d %x %.prec? %index:?  TRN: added ;
  4. var i, j, c, L: integer;
  5.     decim: string;
  6. var MReturn: string absolute Result;   // <--- Salute! :)
  7.  
  8.   function padding(const S, F: Char): boolean;
  9.   var u: integer;
  10.   begin
  11.     if (sFormat[i]=S) and (i+2<=L) and (c<=high(Args)) and
  12.        (ord(sFormat[i+1]) in [ord('1')..ord('9')]) and
  13.        (ord(sFormat[i+2]) in [ord('d'),ord('x'),ord('p')]) and
  14.        (Args[c].VType=vtInteger) then begin
  15.       u := Args[c].VInteger;
  16.       if sFormat[i+2]='d' then
  17.         decim := IntToStr(u) else
  18.         decim := IntToHex(u, ord(sFormat[i+1])-49);
  19.       for u := length(decim) to ord(sFormat[i+1])-49 do
  20.         decim := F + decim;
  21.       MReturn := MReturn+decim;    // K.I.S.S :)=
  22.       Inc(c);
  23.       Inc(i, 2);
  24.       Result := True
  25.     end else Result := False;
  26.   end;
  27.  
  28.  

...thank you myself, I hope the reader (that's you) enjoyed!  :P


PascalDragon

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Re: Function in Function and Result [SOLVED]
« Reply #1 on: October 30, 2020, 02:27:00 pm »
You don't need to declare an alias for Result, because there already exists an alias from original Pascal times: the function name.

Code: Pascal  [Select][+][-]
  1. function Format(const sFormat: String; const Args: array of const): String;
  2.  
  3.   function padding(const S, F: Char): Boolean;
  4.   begin
  5.     Format := 'test';
  6.   end;
  7.  
  8. begin
  9.  
  10. end;

trn76

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Re: Function in Function and Result [SOLVED]
« Reply #2 on: October 30, 2020, 02:31:30 pm »
You don't need to declare an alias for Result, because there already exists an alias from original Pascal times: the function name.

...I need more coffe' %)

lucamar

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Re: Function in Function and Result [SOLVED]
« Reply #3 on: October 30, 2020, 03:48:23 pm »
An alternative, for clarity's sake, is to pass the main Result as a var (or out) parameter to the nested function:

Code: Pascal  [Select][+][-]
  1. function Format(const sFormat: string; const Args: array of const): string;
  2.  
  3.   function padding(const S, F: Char; var MainResult: String): boolean;
  4.   var u: integer;
  5.   begin
  6.       { ... }
  7.       MainResult := MainResult + decim;    // K.I.S.S :)=
  8.       { ... }
  9.   end;
  10.  
  11. begin
  12.     { ... }
  13.  
  14.     if padding('.', '0', Result) ...     // TRN zeros padding
  15.     if padding(';', ' ', Result) ...     // TRN space padding
  16.  
  17.     { ... }
  18. end;

That is (more or less) the "standard" way to return a value when there are two (or more) values to return, in your case a boolean and a string.
Turbo Pascal 3 CP/M - Amstrad PCW 8256 (512 KB !!!) :P
Lazarus/FPC 2.0.8/3.0.4 & 2.0.10/3.2.0 - 32/64 bits on:
(K|L|X)Ubuntu 12..18, Windows XP, 7, 10 and various DOSes.

Handoko

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Re: Function in Function and Result [SOLVED]
« Reply #4 on: October 30, 2020, 04:16:55 pm »
I prefer lucamar's way to do it.

I personally will avoid to change the value of variables that are outside the current routine. Not long ago there was a discussion about avoiding to use global variables. I read and learned many things from the discussion. I'm not so skillful to not using global variables but I like the idea of minimize of using it. This one is different but the concept is similar.

trn76

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  • Posts: 39
Re: Function in Function and Result [SOLVED]
« Reply #5 on: October 30, 2020, 04:46:41 pm »
An alternative, for clarity's sake, is to pass the main Result as a var (or out) parameter to the nested function:

That is (more or less) the "standard" way to return a value when there are two (or more) values to return, in your case a boolean and a string.

...Thank you too :)

bytebites

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  • Posts: 342
Re: Function in Function and Result [SOLVED]
« Reply #6 on: October 30, 2020, 06:40:57 pm »
Code: Pascal  [Select][+][-]
  1.        (ord(sFormat[i+1]) in [ord('1')..ord('9')]) and
  2.        (ord(sFormat[i+2]) in [ord('d'),ord('x'),ord('p')]) and
  3.      
If we follow kiss-principle then ord is unnecessary.

trn76

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Re: Function in Function and Result [SOLVED]
« Reply #7 on: October 30, 2020, 10:17:51 pm »
Code: Pascal  [Select][+][-]
  1.        (ord(sFormat[i+1]) in [ord('1')..ord('9')]) and
  2.        (ord(sFormat[i+2]) in [ord('d'),ord('x'),ord('p')]) and
  3.      
If we follow kiss-principle then ord is unnecessary.


Thank you, "Ord" have now been removed, as stated, the function was not working at all - just a copy.. But it will be something like this:

Code: Pascal  [Select][+][-]
  1. // https://github.com/FChrisF/LLCL/blob/master/sources/SysUtils.pas#L563
  2. function Format(const sFormat: string; const args: array of const): string;
  3. // supported: %% %s %d %x %.prec? %index:?  TRN: added ^
  4. var i, j, c, L: integer;
  5.     decim: string;
  6.  
  7.   procedure doPadding; inline;
  8.   var u: integer;
  9.   begin
  10.     u := args[c].VInteger;
  11.     if sFormat[i+3] = 'd'
  12.       then decim := IntToStr(u)
  13.       else decim := IntToHex(u, Ord(sFormat[i+2])-49);
  14.     for u := Length(decim) to Ord(sFormat[i+2])-49 do
  15.       decim := sFormat[i+1] + decim;
  16.     Inc(c);
  17.     Inc(i, 3);
  18.     Format += decim;
  19.   end;
  20.  
  21.   function isPadding: boolean; inline;
  22.   begin
  23.     Result := (i+2 <= L) and (c <= High(args)) and
  24.        ((sFormat[i+2]) in [('1')..('9')]) and
  25.        ((sFormat[i+3]) in [('d'), ('x'), ('p')]) and
  26.        (args[c].VType = vtInteger);;
  27.   end;
  28.  
  29. begin
  30.   if (High(args) < 0) then Result := sFormat
  31.   else begin
  32.     Result := '';
  33.     L := Length(sFormat);
  34.     if (L > 0) then begin
  35.       i := 1;
  36.       c := 0;
  37.       while (i <= L) do begin
  38.         j := i;
  39.         while (i <= L) and (sFormat[i] <> '%') do Inc(i);
  40.         case i-j of
  41.           0: ;
  42.           1: Result += sFormat[j];
  43.           else Result += Copy(sFormat, j, i-j);
  44.         end;
  45.         Inc(i);
  46.         if (i > L) then Break;
  47.         if ((sFormat[i]) in [('0')..('9')]) and (i < L) and (sFormat[i+1] = ':') then begin
  48.           c := Ord(sFormat[i])-48;  // Format('%d %d %d %0:d %d',[1,2,3,4]) = '1 2 3 1 2'
  49.           Inc(i, 2);
  50.           if (i > L) then Break;
  51.         end;
  52.         if sFormat[i] = '%'                       // Format('%%') = '%'
  53.           then Result += '%' else                 // Format('%.3d',[4]) = '004':
  54.         if (sFormat[i] = '^') and isPadding{%H-}  // TRN custom padding ^ + Char
  55.           then doPadding else
  56.         if (c <= High(args)) then begin
  57.           with args[c] do
  58.           case sFormat[i] of
  59.           's': case VType of
  60.             vtString:     Result += string(VString^);
  61.             vtAnsiString: Result += string(VAnsiString);
  62.             vtPChar:      Result += string(VPChar);
  63.             vtChar:       Result += string(VChar);
  64.             //vtPWideChar:  Result += string(VPWideChar);
  65.             //vtWideChar:   Result += string(VWideChar);
  66.             {$IFDEF UNICODE}
  67.             vtUnicodeString: Result += string(VUnicodeString);
  68.             {$ENDIF}
  69.           end;
  70.     {      'g','f','n','m': case VType of
  71.           vtExtended: begin
  72.              str(VExtended^, decim);
  73.              Result += decim;
  74.            end;
  75.            vtCurrency: begin
  76.              str(VCurrency^, decim);
  77.              Result += decim;
  78.            end;
  79.            end;  // add 3kb to the .exe -> use str() and %s parameter }
  80.           'd': if VType = vtInteger then
  81.                  Result += IntToStr(VInteger) else
  82.                if VType = vtInt64 then
  83.                  Result += IntToStr(VInt64^);
  84.           'x','p': if VType in [vtInteger, vtPointer] then
  85.             Result += IntToHex(VInteger, 8);
  86.           end;
  87.           Inc(c);
  88.         end;
  89.         Inc(i);
  90.       end;
  91.     end;
  92.   end;
  93. end;
  94.  
  95. ..
  96.  
  97. const
  98.  
  99.   month_str : array [0..15] of string = (
  100.     'jan', 'feb', 'mar', 'apr', 'may', 'jun', 'jul', 'aug',
  101.     'sep', 'oct', 'nov', 'dec', '?13', '?14', '?15', '?16'
  102.   );
  103.  
  104. ..
  105.  
  106. procedure pac_text_format(var pac: TPack; show_merged: boolean = True);
  107. type  Tattrib_table = record
  108.         m : Byte;
  109.         c : Char;
  110.       end;
  111. const attr: array [0..7] of Tattrib_table = (
  112.         (m: $20; c: 'h'),
  113.         (m: $40; c: 's'),
  114.         (m: $80; c: 'p'),
  115.         (m: $10; c: 'a'),
  116.         (m: $01; c: 'r'),
  117.         (m: $02; c: 'w'),
  118.         (m: $08; c: 'e'),
  119.         (m: $04; c: 'd'));
  120. var s: string;
  121.     u: cuint;
  122. begin
  123.  
  124.   s := Format('%^ 8d ', [pac.unpack_size]);
  125.   if ((cuint8(pac.head_archive[12]) and 1) <> 0)
  126.     then s += '     n/a '
  127.     else s += Format('%^ 8d ', [pac.pack_size]);
  128.  
  129.   // get time
  130.   s += Format('%^02d:%^02d:%^02d ', [pac.hour, pac.minute, pac.second]);
  131.  
  132.   // get date
  133.   s += Format('%^ 2d-%s-%^04d ', [pac.day, month_str[pac.month], pac.year]);
  134.  
  135.   // get attributes *
  136.   for u := 0 to 7 do
  137.     if (pac.attributes and attr[u].m) <> 0 then s += attr[u].c  else s += '-';
  138.  
  139.   // get filename *
  140.   s += ' ' + PChar(@pac.head_filename);
  141.  
  142.   // print output *
  143.   pac_text(pac, s);
  144.  
  145.   // print merged *
  146.   if show_merged and ((pac.head_archive[12] and 1) <> 0) and (pac.pack_size <> 0) then begin
  147.     pac_text( pac, Format('%^ 8d %^ 8d', [pac.merge_size, pac.pack_size]) + ' ........ ........... ........ Merged sum');
  148.   end;
  149.  
  150. end;
  151.  
  152.  

and here is the output:

Code: INI  [Select][+][-]
  1. Unpacked   Packed Time     Date        Attrib   Name
  2. -------- -------- -------- ----------- -------- ----------------
  3.   901120   770922 18:33:21 19-nov-2011 ----rwed adf_game_aga/SimCity 2000 v1.1d (1994-10-27)(Maxis)(AGA)(Disk 3 of 3).adf
  4.   901120   735552 18:33:23 19-nov-2011 ----rwed adf_game_aga/SimCity 2000 v1.1d (1994-10-27)(Maxis)(AGA)(Disk 2 of 3).adf
  5.   901120   831000 18:33:24 19-nov-2011 ----rwed adf_game_aga/SimCity 2000 v1.1d (1994-10-27)(Maxis)(AGA)(Disk 1 of 3).adf
  6.   901120   297094 09:07:14  2-nov-2012 ----rwed adf_game_ecs/Zerosphere.adf
  7.   901120   762944 20:17:57  1-nov-2012 ----rwed adf_game_ecs/Trap Runner.adf
  8.   901120   519438 09:04:55  2-nov-2012 ----rwed adf_game_ecs/Tanks Furry.adf
  9.   901120   455026 22:00:17 10-mar-2011 ----rwed adf_game_ecs/Standard Deviation (1994)(Enertia)(Disk 3 of 3).adf
  10.   901120   477114 22:00:11 10-mar-2011 ----rwed adf_game_ecs/Standard Deviation (1994)(Enertia)(Disk 2 of 3).adf
  11.   901120   454854 22:00:04 10-mar-2011 ----rwed adf_game_ecs/Standard Deviation (1994)(Enertia)(Disk 1 of 3).adf
  12.   901120   403686 00:01:18 25-sep-2013 ----rwed adf_game_ecs/sqrxz4-v.latest-amigaocs.adf
  13.   901120   412448 00:01:07 25-sep-2013 ----rwed adf_game_ecs/sqrxz3-v.latest-amigaocs.adf
  14.   901120   210296 18:48:14 30-nov-2006 ----rwed adf_game_ecs/sqrxz2-v.latest-amigaocs.adf
  15.   901120   287758 00:00:32 25-sep-2013 ----rwed adf_game_ecs/sqrxz-v.latest-amigaocs.adf
  16.   215368   215368 16:47:39 25-sep-2013 ----rwed adf_game_ecs/Solomons Key.dms
  17.   901120   365416 22:56:30 17-may-2032 ----rwed adf_game_ecs/Night Shift.adf
  18.   901120   400738 18:33:24 19-nov-2011 ----rwed adf_game_ecs/Moebius Goatlizard DX.adf
  19.   165044   165044 22:23:10  1-nov-2012 ----rwed adf_game_ecs/Metro-Cross.dms
  20.   901120   344310 07:53:11  2-nov-2012 ----rwed adf_game_ecs/Max Knight.adf
  21.   901120   354112 07:53:57  2-nov-2012 ----rwed adf_game_ecs/Max Knight Xmas.adf
  22.   901120   443626 23:51:54 19-aug-1980 ----rwed adf_game_ecs/Insidia.adf
  23.   901120   418562 18:33:22 19-nov-2011 ----rwed adf_game_ecs/Goat DX.adf
  24.   901120   202096 22:30:46 17-may-2032 ----rwed adf_game_ecs/Crimson Crown.adf
  25.   901120   306444 07:32:17  2-nov-2012 ----rwed adf_game_ecs/Boxx3.adf
  26.   901120   268918 07:32:24  2-nov-2012 ----rwed adf_game_ecs/Boxx2.adf
  27.   901120   250204 15:35:16 23-jan-1980 ----rwed adf_game_ecs/Boxx.adf
  28.   901120   374018 22:23:48 17-may-2032 ----rwed adf_game_ecs/Blockhead.adf
  29.   901120   397256 22:23:48 17-may-2032 ----rwed adf_game_ecs/Blockhead II.adf
  30.   901120   417128 04:17:44  3-dec-2029 ----rwed adf_game_ecs/Adventures of Maddog Williams in The Dungeons of Duridian, The_Disk5.adf
  31.   901120   483770 04:17:44  3-dec-2029 ----rwed adf_game_ecs/Adventures of Maddog Williams in The Dungeons of Duridian, The_Disk4.adf
  32.   901120   550338 04:17:44  3-dec-2029 ----rwed adf_game_ecs/Adventures of Maddog Williams in The Dungeons of Duridian, The_Disk3.adf
  33.   901120   593354 04:17:44  3-dec-2029 ----rwed adf_game_ecs/Adventures of Maddog Williams in The Dungeons of Duridian, The_Disk2.adf
  34.   901120   422324 07:00:00  1-jul-2029 ----rwed adf_game_ecs/Adventures of Maddog Williams in The Dungeons of Duridian, The_Disk1.adf
  35.   901120   504450 14:58:34 18-jun-2028 ----rwed adf_game_ecs/4-Get-It.adf
  36.    52716      n/a 14:36:08  5-oct-2032 ----rwed C/zoo
  37.    42244      n/a 05:35:35 30-nov-1999 ----rwed C/ZipSplit
  38.    40120      n/a 05:35:16 30-nov-1999 ----rwed C/ZipNote
  39.    81216      n/a 05:33:54 30-nov-1999 ----rwed C/Zip
  40.     3092      n/a 16:58:09 13-apr-2032 ----rwed C/xUP
  41.     2124      n/a 16:58:09 13-apr-2032 ----rwed C/xType
  42.     1384      n/a 16:58:09 13-apr-2032 ----rwed C/xScan
  43.     2572      n/a 16:58:09 13-apr-2032 ----rwed C/xQuery
  44.     3208      n/a 16:58:09 13-apr-2032 ----rwed C/XpkMasterPrefs
  45.     3428      n/a 16:58:09 13-apr-2032 ----rwed C/xPack
  46.     2232      n/a 16:58:09 13-apr-2032 ----rwed C/xLoadSeg
  47.     6184      n/a 03:03:16 15-mar-2030 ----rwed C/xicon
  48.     1420      n/a 18:26:06 13-oct-2031 ----rwed C/xfdUnlink
  49.     1516      n/a 18:26:06 13-oct-2031 ----rwed C/xfdScan
  50.     1652      n/a 18:26:06 13-oct-2031 ----rwed C/xfdPatch
  51.     1568      n/a 18:26:06 13-oct-2031 ----rwed C/xfdList
  52.     1204      n/a 18:26:06 13-oct-2031 ----rwed C/xfdLibInfo
  53.     7568      n/a 11:01:06 18-oct-2014 ----rwed C/XFDguide
  54.     4748      n/a 18:26:06 13-oct-2031 ----rwed C/xfdDecrunchAddr
  55.     1516      n/a 16:51:36 30-nov-2031 ----rwed C/xadList
  56.       60      n/a 11:23:22 17-dec-1992 ----rwed C/TestRMB
  57.       60      n/a 07:32:12 17-dec-1992 ----rwed C/TestLMB
  58.   261832   109562 ........ ........... ........ Merged sum
  59.     2263      n/a 11:01:06 18-oct-2014 ----rwed C/XFDguide.info
  60.     1227      n/a 16:18:55  1-sep-2007 ----rw-d C/WBSMgr.info
  61.     1268      n/a 16:02:15 10-oct-2009 ----rw-d C/TinyMeter_enable.info
  62.     1268      n/a 16:02:15 10-oct-2009 ----rw-d C/TinyMeter_disable.info
  63.     1749      n/a 16:02:15 10-oct-2009 ----rw-d C/TextView.info
  64.     1268      n/a 16:02:15 10-oct-2009 ----rw-d C/TagLiFE_enable.info
  65.     1268      n/a 16:02:15 10-oct-2009 ----rw-d C/TagLiFE_disable.info
  66.     1268      n/a 16:02:15 10-oct-2009 ----rw-d C/StickyRMB_toggle.info
  67.     1268      n/a 16:02:15 10-oct-2009 ----rw-d C/StickyRMB_enable.info
  68.     1268      n/a 16:02:15 10-oct-2009 ----rw-d C/StickyRMB_disable.info
  69.     1270      n/a 16:02:15 10-oct-2009 ----rw-d C/StackAttack_enable.info
  70.     1270      n/a 16:02:15 10-oct-2009 ----rw-d C/StackAttack_disable.info
  71. ...
  72.  

...and so on, not complete but now I have a nice output (for now) and can complete the decruncher, using the output as debug too (formating is faster than FPC Format and I don't have any  "uses" units in my decruncher) :)

PascalDragon

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Re: Function in Function and Result [SOLVED]
« Reply #8 on: October 31, 2020, 11:03:01 am »
I prefer lucamar's way to do it.

The ability to access the parent frame is one of the strong points of nested functions in Pascal. C++ for example only gained such with the introduction of lambdas.

It can also be more efficient: If you call a nested function and pass four parameters that exactly represent local variables then the compiler does indeed need to handle those four parameters (this involves moving to and from the stack, maybe spilling registers to make room for the parameters) while if you access these same variables simply from inside the function the compiler only needs to pass a single parameter: the parent frame. Though you do have a slightly less efficient access to these variables then, cause they need to be loaded indirectly through the parent frame pointer.

440bx

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Re: Function in Function and Result [SOLVED]
« Reply #9 on: October 31, 2020, 11:34:27 am »
Though you do have a slightly less efficient access to these variables then, cause they need to be loaded indirectly through the parent frame pointer.
It should also be noted that there is one additional level of indirection for every nesting level involved in accessing a variable.  In some cases that can result in a noticeable loss of performance.
FPC v3.0.4 and Lazarus 1.8.2 on Windows 7 64bit.

 

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