The Art Of Debugging

[object Object],[object Object],[object Object]

Bugs and Debugging ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The Nature of the Bugs ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Debugging Process ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Psychology of Debugging ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Debugging Strategies (1) ,[object Object],[object Object],[object Object],Original width [1024], height [768] Resizing [2] times New width [384], height [640]

Debugging Strategies (2) ,[object Object],[object Object],[object Object],[object Object],[object Object],Trace begun at AppLogic/UDL/Entity.pm line 256 AppLogic::UDL::Entity::Write('AppLogic::UDL::Entity=HASH(0x858e7f8)', 0, 0, 'ARRAY(0x8586b68)', 'HASH(0x82c3370)') called at AppLogic/ADL.pm line 861 AppLogic::ADL::SaveApplication('AppLogic::ADL=HASH(0x857eff0)', 'ikea-mini', 'HASH(0x827f3e4)') called at request.pl line 526 main::ModeSaveApp(1, 'HASH(0x8537ff8)', 'CGI::Session=HASH(0x84fc46c)') called at request.pl line 115

Debugging Strategies (3) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Debugging Strategies (4) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Debugging Strategies (5) ,[object Object],[object Object],[object Object],my ($i, $j) = (1, 2); print_out_i_and_j($i, $j); $i += 3; $j += 4; print "after: i=[$i] j=[$j]"; print_out: i=[1] j=[2] after: i=[5] j=[5]

Debugging Strategies (6) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],sub print_out_i_and_j($$) { print "print_out: i=[$_[0]] j=[$_[1]]"; $_[0]++; # adjust offset in file $_[1]--; # adjust line count }

Debugging Checklist ,[object Object],[object Object],[object Object],[object Object]

What's Next ,[object Object],[object Object],[object Object],[object Object]

The Art Of Debugging

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The Art Of Debugging