How can i do multiple statements when an error occurs?

Question

How can i do multiple statements when an error occurs?

because after "except on do" construct I can't put begin and end; and it only allows for 1 statement to be executed.
try
SList.LoadFromFile(Filename);
except on E:EFOpenError do
// doing other things here maybe 🤔
Halt(1);
end;

#english #lazarus #programming

0

16.04.2022

13 ответов

24 просмотра

Kris Jace

except-end is equivalent to begin-end, so simply: try SList.LoadFromFile(Filename); except functionA(); functionB(arg1, arg2); if(something) then begin bla bla blah end else begin blah blah end; Halt(1); end;

0

16.04.2022

Hemul GM

Kris Jace
except-end is equivalent to begin-end, so simply: ...

I do not advise writing code inside the exception section

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16.04.2022

Kris Jace

that's what the except section is for ;)

0

16.04.2022

Hemul GM

Kris Jace
that's what the except section is for ;)

it is designed to handle errors in the first place. And redundant and large code inside the exception can throw a new exception that will no longer be caught.

0

16.04.2022

Kris Jace

Hemul GM
it is designed to handle errors in the first place...

handling errors can require more than a single line of code.

0

16.04.2022

Hemul GM

Kris Jace
handling errors can require more than a single lin...

Result := False; - enough

0

16.04.2022