by Phin Straite

  1. Thou shalt not rely on the compiler default methods for construction, destruction, copy construction, or assignment for any but the simplest of classes. Thou shalt forget these "big four" methods for any nontrivial class.
  2. Thou shalt declare and define the destructor as virtual such that others may become heir to the fruits of your labors.
  3. Thou shalt not violate the "is-a" rule by abusing the inheritance mechanism for thine own twisted perversions.
  4. Thou shalt not rely on any implementation-dependent behavior of a compiler, operating system, or hardware environment, lest thy code be forever caged within that dungeon
  5. Thou shalt not augment the interface of a class at the lowest level without most prudent deliberation. Such ill-begotten practices imprison thy clients unjustly into thy classes and create unrest when code maintenance and extension are required.
  6. Thou shalt restrict thy friendship to truly worthy contemporaries. Beware, for thou art exposing thyself rudely as from a trenchcoat.
  7. Thou shalt not abuse thy implementation data by making it public or static except in the rarest of instances. Thy data are thine own; share it not with others.
  8. Thour shalt not suffer dangling pointers or references to be harbored within thy objects. These are nefarious and precarious agents of random and wanton destruction.
  9. Thou shalt make use of available class libraries as conscientiously as possible. Code reuse, not thine own but that of thy clients as well, is the holy grail of OO.
  10. Thou shalt forever forswear the use of the vile printf/scanf, rather favoring the flowing streams. Cast of thy vile C cloak and partake of the wondrous fruit of flexible and extensible I/O.

Taken from "Practical C++ Programming"

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