Category: Functional Programming
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Isolating Side Effects Using Isolation Sets
Isolate side effects by using isolation sets, sets of potentially-pure and fall-through functions that cleanly and simply separate a program’s logic from its side effects.
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Potentially-Pure Functions
Potentially pure functions are argument-based higher-order functions (i.e., functions that accept other functions as arguments) with pure function bodies (i.e., function bodies that are consistent and side-effect free), meaning their purity is dependent upon the arguments passed into the function.
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Pure Functions
Striving to write pure functions (i.e., functions that are consistent and side-effect free) improves the testability, simplicity, and clarity of code.
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Fall-Through Functions
Fall-through functions, which are simple functions that lack branching constructs (e.g., if/then, switch, etc.), provide the ability to isolate side effects in your codebase.
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Structurally compatible type checking in JavaScript with haven.js
JavaScript has come a long way since the early days of the web, a time when the language was utilized to add a quick pop-up to a page, make some gaudy graphic move across the screen, or, if you were really fancy, error check a few fields in a web form. Today, javascript dominates the […]