Array method
A JavaScript array method is a built-in operation associated with arrays for inspecting, processing, or transforming their elements.
The Well-Grounded Rubyist, Fourth Edition
The Array method is a Ruby top-level conversion method that returns an array representation of its argument.
- How it is used
- Converts an existing Ruby object into an array representation.
- How deep it goes
- Explains ordinary wrapping and object-defined to_a behavior, while stopping short of a complete conversion protocol reference.
- Examples
- Uses string conversion, a dynamically defined to_a method, and Array.try_convert with an object-defined to_ary method.
- What you can do after
- Apply it to obtain an array from an argument and observe how conversion methods affect the result.
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Secrets of the JavaScript Ninja, Second Edition
A method available on arrays for operations such as iteration, transformation, or querying.
- How it is used
- Use array methods to make collection handling more elegant, including adding and removing items.
- How deep it goes
- Introduces arrays as objects and surveys built-in methods without detailing each method’s mechanics.
- Examples
- Names push, splice, forEach, map, find, filter, and reduce among built-in methods.
- What you can do after
- Apply built-in array methods to handle collections more elegantly, including adding and removing items.
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Related concepts
- calluses · Function.prototype.call is a JavaScript method that invokes a function with a specified this value and arguments supplied individually.
- Array.prototype.filterincludes · Array.prototype.filter is a JavaScript method that returns a new array containing the elements for which a callback predicate returns a truthy value.
- reduction operationincludes · A reduction operation combines multiple input values or partial results according to a combining rule to produce fewer aggregate results, often a single result.
- arraypart of · An array is an indexed, ordered collection of elements arranged in one or more dimensions, with elements accessed by position.
- functional, stateless philosophyused by · Functional programming is a programming paradigm that expresses computation through the evaluation and composition of functions, typically favoring immutable data and minimizing mutable state and side effects.
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