Principles of good software design

Principles of good software design

Most programs spend their 90% time doing 10% instructions. Find this 10% and concentrate your efforts there.
Never code until specifications are precise and complete.
Sometimes postponing (algorithmic) pr…


This content originally appeared on DEV Community and was authored by Aatmaj

Principles of good software design

  • Most programs spend their 90% time doing 10% instructions. Find this 10% and concentrate your efforts there.
  • Never code until specifications are precise and complete.
  • Sometimes postponing (algorithmic) problems simplifies their solution, just like it happens in recursive algorithms.
  • Choose the algorithm wisely according to the need. Unnecessary complication of algorithm doubles up the work. Dont choose a algorithm just because you know it. Keep your logic simple!
  • Keep your algorithms as simple as you can. When in doubt, choose the simple way
  • Consider time and space tradeoffs while deciding your algorithm.(Valid in many conditions even to this date.)
  • Be sure that the algorithm is correct before starting to code. For this, make a throwaway prototype and test the algorithm. At least verify the intricate parts of the algorithm.
  • If >40% code of a module gives errors, Rewrite the entire module again. Never be afraid to start over. Next time may be both shorter and easier than patchwork and bug-fixing. Starting afresh is easier than patching an old program
  • Act in haste and repent at leisure. Program in haste and debug forever!
  • Never optimize a program until it is correct and working.
  • Don't optimize code unless absolutely necessary.

Adapted from the book Data Structures and Program Design in C


This content originally appeared on DEV Community and was authored by Aatmaj


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