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Immutable data structures – also known as persistent or purely functional data structures – are a key part of modern functional programming. Once created, immutable data structures cannot be modified. Instead, they support operations which efficiently produce a new copy of the structure with the desired changes…
Propositional logic was discovered by Stoics around 300 B.C., only to be abandoned in later antiquity and rebuilt in the 19th century by George Boole’s successors. One of them, Charles Peirce, saw its significance for what we now call logic circuits, yet that discovery too was forgotten until the 1930s. In the ’50s…
“ Everything is an expression ” is an informal slogan of several programming languages, particularly those descended from the Lisp family. It is meant to contrast with languages that distinguish statements from expressions , such as Python, JavaScript, and C.