what happens to the code without thought

I ran into this wonderful piece of java code at work. Just had to share this with everyone.
This code base was modified over last 4 years by at least 50 different developers with no TDD. Look at what the code ends up being in a long run.

// given that record and id are Strings
if (record != null && ((id != null && id.length() == 20) || (id == null || id.length() != 20))) {
  // do something
}

This if condition is essentially the same as

// given that record and id are Strings
if (record != null && true) {
  // do something
}

laws of software defects

Just for fun but feels so true on some days


Remember these laws of thermodynamics !
Energy can not be created nor destroyed
Energy can be changed from one form to another
In an isolated system the total energy remains the same


Now replace the word "energy" by "Defects" and you get the laws of software defects !
Defects can not be created nor destroyed
Defects can be changed from one form to another
In an isolated system the total defects remains the same

heh !