Reducer: meaning, definitions and examples

Typically used in programming to describe a function that takes an input list or collection and combines it into a single output, often used with functions like reduce in JavaScript.

• The reducer function calculates the total sum of all the values in the array.
• In Redux, the reducer is responsible for updating the state based on the actions dispatched.

Used in various contexts to describe a device or function that changes the nature, structure, or format of something. In technology, it often refers to modifying data formats or structures.

• In text processing, a transformer function may convert a string of text to uppercase.
• Transformers in machine learning can modify and improve the data before feeding it to algorithms.

Often used in mathematical or computational contexts to describe a variable that stores the ongoing result of a series of additions, subtractions, or other operations.

• The accumulator keeps track of the total score as the game progresses.
• In programmable calculators, the accumulator holds the running total as operations are performed.

Typically used in a technical or industrial context to refer to a device or substance that decreases the size, amount, or strength of something.

• The chemical reducer lowered the pH level of the solution.
• A speed reducer was installed in the machinery to ensure safe operation.

Often used in a scientific or medical context to describe something that slows down or prevents a particular process or reaction.

• An enzyme inhibitor can block the action of specific enzymes in the body.
• The corrosion inhibitor added to the pipeline helps to prevent rust.

Commonly used in social or digital environments to describe a person or tool that manages, regulates, or oversees activities to ensure they are conducted orderly or fairly.

• The forum moderator removed the offensive comment.
• In a debate, the moderator ensures that each participant gets an equal chance to speak.

This term is often used in technical or mechanical contexts to describe something that lessens or reduces in size, quantity, or intensity. It can also refer in programming to a function that processes and reduces a complex structure to a simpler form.

• The company installed a noise reducer to lower the sound levels in the factory.
• In the Redux library, a reducer function specifies how the application's state changes in response to actions.

Used primarily in contexts involving molding or forming materials, objects, or ideas. It may also be used metaphorically to describe someone who influences or determines the outcome of situations or trends.

• The woodworker used a shaper to form the intricate details of the furniture.
• As a policy shaper, she played a crucial role in formulating the new educational guidelines.

This word is typically used in contexts related to fitness, dieting, and fashion to describe something or someone that is becoming more slender or thin. It can have a positive connotation related to achieving a desired shape or health goal.

• She joined a slimming club to become a slimmer version of herself.
• The new dress design makes the wearer appear slimmer and more elegant.