First Essay

We all talk about the way we do things in our everyday work,
hobbies and home life and recognize repeating patterns all the time.
· Sticky buns are like dinner rolls, but I add brown sugar and nut filling to
them.
· Her front garden is like mine, but, in mine I use astilbe.
· This end table is constructed like that one, but in this one, the doors
replace drawers.
We see the same thing in programming, when we tell a colleague
how we accomplished a tricky bit of programming so he doesn’t have to
recreate it from scratch. We simply recognize effective ways for objects to
communicate while maintaining their own separate existences.
Some useful definitions of design patterns have emerged as the
literature in his field has expanded:
· “Design patterns are recurring solutions to design problems you see over
et. al., 1998).
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· “Design patterns constitute a set of rules describing how to accomplish
certain tasks in the realm of software development.” (Pree, 1994)...