Deklarativní

Deklarativní refers to a programming paradigm where the programmer specifies what the program should accomplish, rather than how it should accomplish it. This contrasts with imperative programming, which focuses on a sequence of commands to change the program's state. In a declarative approach, the logic of computation is expressed in a clear, understandable way, often through structured data, relationships, or rules.

Key characteristics of declarative programming include immutability (data does not change once created) and a lack of explicit control flow statements like loops and conditional branches. Instead, the system or interpreter determines the execution order based on the declared relationships or goals. Examples of declarative languages include SQL, HTML, CSS, and Prolog. SQL, for instance, allows users to describe the data they want to retrieve without specifying the steps the database should take to find it. HTML describes the structure and content of a web page, leaving the rendering to the browser. Declarative programming often leads to more readable, maintainable, and scalable code, as it abstracts away complex implementation details and focuses on the desired outcome.