Principia Informatica

• Avoid premature optimization.
• Your code is well written when there is no need to optimize at all.
• Try to eliminate global objects of any kind.
• Devide and conquer; use functions.
• Code duplication is forbidden.
• Every software module must do a single, clear, simple job and do it well.
• Every single job must be assigned to just one simple, clear software module.
• Think a lot before you take any action.
• You think better away from the computer. Take a walk!
• There is no need to write code for unneeded features.
• A single line of unneeded code is a menace.
• Adapt software design to user needs and habits.
• Avoid trying to adapt user needs and habits to software design.
• Do not seat at your desk and try to imagine or invent potential user needs.
• Try put yourself in user's shoes in order to discover real user needs.
• Code quality and readability matters first, efficiency follows.
• Do not write complicated code to impress people with your indisputable skills.
• People will be attracted most by clarity, elegance and simplicity.
• Program malfunction is not an option.
• If an error occurs, your program must realize that an error has occured.