Functieblo

Functieblo is a term used in Dutch-speaking technical contexts to refer to a modular functional unit analogous to a function block. It denotes a self-contained block that encapsulates a discrete function or service and exposes a defined interface through inputs and outputs. A functieblo is designed to be reusable and combinable with other functieblo to construct larger systems.

Typical properties include a clearly defined boundary, a single responsibility, and a documented interface. Some designs treat functieblo as stateless components arranged via data flow, while others allow internal state managed by the block under controlled conditions. In practice, the term is used in education and industry to illustrate modular design, variable scopes, and composition patterns.

Contexts where the term appears include software engineering curricula, block-based programming environments, and engineering disciplines that use modular diagrams like function block diagrams (FBDs). In PLC programming and IEC 61131-3, the concept of function blocks parallels similar ideas, though "functieblo" per se is not a formal standard term in that specification; it is used as a descriptive label in some documentation.

A simple example is a functieblo named "data_cleaner" that accepts raw input data, applies cleaning rules, and outputs sanitized data. More complex functieblo may compose several sub-blocks and expose configurable parameters.

Because the term is informal and may vary by organization, readers should check local definitions when encountering it.