PostValueT

PostValueT is a generic function concept used in programming libraries to post or dispatch a value of an arbitrary type to a consumer, observer, or event loop. The name emphasizes its templated nature, allowing a single API to handle many data types without duplicating code. In practice, postValueT serves as a lightweight bridge for inter-thread or inter-component communication, enabling producers to hand off data without directly invoking the consumer’s logic.

Typically, postValueT is implemented as a templated function, such as a form like template <typename T> void postValueT(T value) or an equivalent in the target language. The function is designed to enqueue the provided value into a thread-safe mechanism (for example, a dispatcher, message queue, or event bus) so that the value is delivered to the designated handler on the appropriate thread or context. Depending on the design, the value may be copied or moved, and delivery may occur synchronously or asynchronously.

Key design considerations include thread-safety, delivery guarantees, and ordering. A common expectation is that postValueT enforces message ordering for values posted to the same destination, and that it minimizes contention on producer threads. Some implementations provide overloads or variants to specify the destination, a delay before delivery, or multiple recipients.

Common use cases involve GUI frameworks, reactive or stream-based systems, and any scenario requiring decoupled communication between producers and consumers. Developers should manage lifetime and ownership carefully, as postValueT often transfers data across thread boundaries or execution contexts, which can affect memory management and exception handling. See also: post, emit, dispatch, event bus.