The answer
For partial application (preset configuration), function composition (pipe with filter/map/reduce), event handlers (preset action), and logging (preset level). Use when you need reusable, configurable functions.
Currying Use Cases and Best Practices
When should you use currying in JavaScript?
More FAQs in Currying Use Cases and Best Practices
For simple functions with 2-3 arguments (currying adds unnecessary complexity), when readability suffers, in performance-critical code (closures have overhead), and when the team is not familiar with functional programming.
Most specific first, least specific last. Configuration first, data last. For example: curry((baseUrl, endpoint, params) => ...) so you can preset baseUrl and endpoint, then pass params at call time.
Use the generic curry function. It is reusable and handles any number of arguments. Manual currying (nested functions) is verbose and error-prone for functions with many arguments.
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