Summary: Composition and Helper Functions

Review what we’ve learned in this chapter about functional programming in PHP.

We'll cover the following
  • Function composition is a means of creating complex software components from the fusion of deterministic functions.

  • Composing functions in either a traditional or point-free style makes it easy to write maintainable code.

  • Partial application and currying are compositional nuances that allow for the handling of function arities by spawning new functions.

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