Lisp (List Processing Language) was invented in 1958 by John McCarthy
and was a pioneered functional programming with
- No need for variables or assignment
- Control via recursion and conditional expression
LISP origins are curious. John McCarthy's wanted something like "Mathematical Physics" — he called it a "Mathematical Theory of Computation".
He needed a very general kind of programming language to make a user interface AI that he had thought up in the late 50s
. So he needed a language that:
• Process data in lists (rather than arrays)
• Symbolic computation (rather than numeric)
• Syntax based on the lambda calculus
• No need for variables or assignment
• Control via recursion and conditional expressionsIdeas first introduced in Lisp
included the if/then/else
construct, first-class functions, recursive function calls, dynamic typing, lexical closures, interactive programming, dynamic memory allocation, garbage collection and incremental compilation.