June 2018
Intermediate to advanced
280 pages
7h 46m
English
Content preview from Design Patterns and Best Practices in Java
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Functional programming
Functional programming is a sub-paradigm of declarative programming. As opposed to imperative programming, functional programming does not change the internal state of the program.
In imperative programming, the functions can be regarded more as sequences of instructions, routines, or procedures. They not only depend on the state stored in the memory but can also change that state. This way, invoking an imperative function with the same arguments can produce different results depending on the current program's state, and at the same time, the executed function can change the program's variables.
In functional programming terminology, functions are similar to mathematical functions, and the output of a function depends ...
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