The commandments of programmer

© Vitali Kaufman
Note.  These “commandments” look like rhymed maxims in Russian. Hope that in English I’ve preserved at least their meaning.
По-русски

To All

• An explanation indecent without good example.
  • Your example should work, not just to explain.
• You have to not trust even to yourself. All that done should be checked.
• What is difficult to understand, unlikely to be used.
• Yuck into joy!
• Hold out!

To programmers

• First of all, your program should work. Optimisation – then.
• Good new – well accessible from the old.
• Take care of your health – start from the (simple) tests.
• Code repeatition – a pledge of troubles.
• Do not trust anyone. All entrances should be to verified!
• Diagnostics should always to say: what, where, when.
• Explanation – silver, by default – gold.
• Do not change a working program without a very serious reason.
• Work to shove on user – is like stealing.