June 2018
Intermediate to advanced
280 pages
7h 46m
English
Content preview from Design Patterns and Best Practices in Java
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Declarative programming
Let's go back to the real-life imperative example, where we gave directions to a friend on how to get to a place. When we think in terms of the declarative programming paradigm, instead of telling our friend how to get to the specific location, we can simply give him the address and let him figure out how to get there. In this case, we tell him what to do and we don't really care if he uses a map or a GPS, or if he asks somebody for instructions: Be at the junction between Fifth Avenue and Ninth Avenue at 9:30 in the morning.
As opposed to imperative programming, declarative programming is a programming paradigm that specifies what a program should do, without specifying how to do it. Among the purely declarative languages ...
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