An object that acts as a proxy for a result that is initially unknown, usually because the computation of its value is yet incomplete.
"Futures are used in concurrent programming to handle results from asynchronous operations."
A technique in computing where the status of an external device or a software component is repeatedly checked in order to achieve synchronization.
"Polling is often used in embedded systems to check the status of hardware devices, but it can be inefficient compared to event-driven approaches."
A condition that remains true before and after a certain operation in computer science, often used in the context of type theory and generic programming.
"Type invariance ensures that a data type remains the same even if its content or structure is modified in some way."
A distributed application structure that partitions tasks or workloads between the providers of a resource or service, called servers, and service requesters, called clients.
"Most web applications follow the client-server model, where the web server serves web pages and the client's browser displays them."
