break/continue nested loop
lazarus / 62-General

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riwu · 2015-12-26 06:50

Are there constructs in FPC to break/continue multi/nested loops?
Or are using flags/labels the only way?
Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i     for
i:=0 to 10 do  begin    for j:=0 to 10 do    begin      if
someCondition then        break(2); //break out of both loops, go to
methodC       if someCondition2 then        continue(2); //break out
if j loop and skip methodB       methodA();    end;     methodB(); 
end;   methodC();

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eny · 2015-12-26 08:23

YAGNI

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balazsszekely · 2015-12-26 08:29

Quote@riwu
Are there constructs in FPC to break/continue multi/nested loops?No.

Quote@riwu
Or are using flags/labels the only way?
Never do that! Break down the lops to procedures/functions instead:
Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i function
LoopJ: Integer;var  J: integer;begin  Result := -1; //default, no
special attention needed  for J := 0 to 10 do  begin    if
SomeCondition1 then    begin      Result := 0;      Exit; //break out
of both loops, go to methodC    end;     if SomeCondition2 then   
begin      Result := 1;      Exit; //break out j loop and skip
methodB    end;    MethodA;  end;end; procedure LoopI;var  I, Res:
Integer;begin  for I := 0 to 10 do  begin    Res := LoopJ;    case Res
of          0: Exit;      1: Continue;    end;    MethodB;    //you
can add other stuff here  end;end; procedure
TForm1.Button1Click(Sender: TObject);begin  LoopI;  MethodCend;

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guest58172 · 2015-12-26 10:40

Quote from: eny on December 26, 2015, 09:23:06 amYAGNI

Some languages features look superfluous but when you need them you're
happy to have them.

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eny · 2015-12-26 12:43

Quote from: BBasile on December 26, 2015, 11:40:24 amSome languages
features look superfluous but when you need them you're happy to have
them.We're not talking about 'some superfluous language features' but
about a specific (albeit theoritical and contrived and therefore
rather superfluous) question from TS.
Getmem already answered more comprehensively the direction TS needs to
lean towards.