About the FPC feature
lazarus / 64-FPC development

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nouzi · 2019-04-14 08:15

About the FPC feature
You could see this expression
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 try  
 try    finally    end; Exceptend;  In one expression
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 try 
finally  Exceptend;  or
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
[code=pascal]try Except finallyend;  [/code]
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Thaddy · 2019-04-14 08:24

Quote from: nouzi on April 14, 2019, 10:15:04 amAbout the FPC feature
Try finally end; is used to make sure a reference counted or
dynamically allocated resource is always released, e.g: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 var
a:Tobject;begin  a:=Tobject.create;  try     // do something with a. 
finally    a.free; Now after use clean up the instance  end;Try except
end; is to catch any exceptions that can be caused in the try block
and handle those gracefully, e.g.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 var
a,b:integer;begin   try      a:=1;      b:=0;      a :=a div b; 
 except       writeln('division by zero');   end;Your last example is
nonsense and should be: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 try  try  except  end;finallyend;

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nouzi · 2019-04-14 08:47

What if I merging the first and second expressions? According to my
understanding we get

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
var a,b:integer; c:Tobject;  begin    c:=Tobject.create;     try     
 // do something with a.    finally      c.free; //Now after use clean
up the instance    end;       try         a:=1;        b:=0;        a
:=a div b;     except         writeln('division by zero');     end;  
or this code
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  try      
    try             // do something with a.          finally         
 c.free; //Now after use clean up the instance          end;         
a:=1;        b:=0;        a :=a div b;     except       
 writeln('division by zero');     end;             
What the inhibitor would be like this

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  
 c:=Tobject.create;     try         //   try     remove this line    
       // do something with a.          finally            c.free;
//Now after use clean up the instance       //   end;  remove this
line           a:=1;        b:=0;        a :=a div b;     except     
  writeln('division by zero');     end;  Translate from Google

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Thaddy · 2019-04-14 09:00

No. try's are separate blocks and need their own try and end. Look at
my examples. You can not short-cut by leaving either a try or an end
out! My examples are correct.

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nouzi · 2019-04-14 09:11

@Thaddy thank
It was just a suggestion

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Thaddy · 2019-04-14 09:21

The reason is they are syntactically different things.