A design pattern is a solution to a common programing problem in software design. Patterns are not complete solutions but conceptual ideas for dealing with common issues. Patterns help communicate a common language among developers.

Keynotes:

• What are design patterns?

  • A proven solution to a common issue in software design.

  • Patterns encourage reusable design strategies.

  • Common vocabulary and structure.

• What design patterns are not?

  • An exact solution to a problem.

  • They don't replace good design strategy.

  • Can lead to inefficient solutions

• What makes a pattern.

  • purpose

  • usefulness

  • applicability

  • acceptance (early stages proto-pattern)

• Common Types of Patterns

  • Creational Patterns

  • Structural Patterns

  • Behavioral Patterns