SayPro High-level design patterns

"Design patterns" might have come into the programmer’s lexicon around the time a book by the same name was published, but the concept has existed since the dawn of man. Given a problem, there are certain traditional ways of solving it. Having windows on two adjacent walls in a room is a design pattern for houses that ensures adequate light at any time of day. Or putting the courthouse on one side of a square park and shops around the other sides is another kind of design pattern that focuses a town’s community. The culture of computer programming has developed hundreds of its own design patterns: high level patterns that affect the architecture of the whole program–forcing you to chose them in advance–and low-level patterns that can be chosen later in development.High-level patterns are baked into certain types of frameworks. The Model-View-Controller (MVC) pattern is ubiquitous for GUIs and web applications and nearly impossible to escape in frameworks like Cocoa, Ruby-on-Rails, and .Net, but that doesn’t mean you have to use it for every program; some programs don’t have to support random user interaction and wouldn’t benefit from MVC.MVC is well described elsewhere, so here are some of the other high-level patterns and what they’re good for.The 1-2-3This is the first pattern you learned in programming class: the program starts, asks the user for input, does something with it, prints it out and halts. One-two-three. "Hello world" is a 1-2-3. It’s the simplest pattern and still useful and appropriate in many situations. It’s good for utilities, housekeeping tasks and one-off programs.One of the biggest mistakes made by programmers is to get too ambitious. They start designing an MVC program, take weeks or months to code and debug it, but then it dwarfs the magnitude of the problem. If someone wants a program that doesn’t need to take its inputs randomly and interactively, then produces a straightforward output, then it’s a candidate for 1-2-3.Please visit our website at www.saypro.online Email: info@sayro.online Call: + 27 (0) 11 071 1903 Email: info@saypro.online Tel: + 27 11 071 1903 WhatsApp: + 27 84 313 7407. Comment below for any questions and feedback. For SayPro Courses, SayPro Jobs, SayPro Community Development, SayPro Products, SayPro Services, SayPro Consulting, and SayPro Advisory visit our website to www.saypro.online