Welcome to JokeBarn.net
Home | Random Joke | Search | Contact Us
The JokeBarn.net Family

 
Humor and Jokes
humor Categories
Airline
Animal
Automotive
Blonde
Business
Computer
Doctor
Holiday
Kids
Lawyer
Men
Miscellaneous
Police
Politician
Pun
Redneck
Relationships
Religion
School
Signs
Sports
Women
 
Joke Archive
Picture Archive
funny jokes and images

 
clean jokes
Manage Jokes

Register a new account

Login :
Pass :
 
Forgot your password?

funny images and pictures


 

 
Unintended Consequences of Code Recycling
 

I don't know about the validity of this, but it is a great software development story.

CARELESS CODE RECYCLING CAUSES KILLER KANGAS

Mutant Marsupials Take Up Arms Against Australian Air Force

The reuse of some object-oriented code has caused tactical headaches for Australia's armed forces. As virtual reality simulators assume larger roles in helicopter combat training, programmers have gone to great lengths to increase the realism of their scenarios, including detailed landscapes and - in the case of the Northern Territory's Operation Phoenix- herds of kangaroos (since disturbed animals might well give away a helicopter's position).

The head of the Defense Science & Technology Organization's Land Operations/Simulation division reportedly instructed developers to model the local marsupials' movements and reactions to helicopters. Being efficient programmers, they just re-appropriated some code originally used to model infantry detachment reactions under the same stimuli, changed the mapped icon from a soldier to a kangaroo, and increased the figures' speed of movement.

Eager to demonstrate their flying skills for some visiting American pilots, the hotshot Aussies "buzzed" the virtual kangaroos in low flight during a simulation. The kangaroos scattered, as predicted, and the visiting Americans nodded appreciatively... then did a double-take as the kangaroos reappeared from behind a hill and launched a barrage of Stinger missiles at the hapless helicopter. (Apparently the programmers had forgotten to remove that part of the infantry coding.)

The lesson?

Objects are defined with certain attributes, and any new object defined in terms of an old one inherits all the attributes. The embarrassed programmers had learned to be careful when reusing object-oriented code, and the Yanks left with a newfound respect for Australian wildlife.

Simulator supervisors report that pilots from that point onward have strictly avoided kangaroos, just as they were meant to.

-- From June 15, 1999 Defense Science and Technology Organization Lecture Series, Melbourne, Australia, and staff reports


Joke Info
Category : Airline Contributor : n/a
Rating  

Please login for Email options

 
Rate this joke
Very Good Good OK Bad Very Bad

[ View Next Joke ] [ View Next Airline Joke ]