I Love Lisp

5 hours ago

The author learned math notation before programming, leading to a mismatch with Java, which felt unlike math, while Scheme felt like math that runs.
Lisp's primary abstraction is the function, rooted in lambda calculus, and everything is built on it, including data structures and control structures.
Lisp syntax is the abstract syntax tree, with parentheses defining structure; code is data, allowing programs to read and transform expressions.
Macros in Lisp eliminate design patterns by enabling language extension; patterns become new syntax, blurring the line between library and language.
Lisp makes concepts like for loops, class hierarchies, and null checks unnecessary through functions like map, closures, and option types.
Lisp promotes pure functions with side effects at the edges, making testing straightforward and programs easier to reason about.
Lisp variants like Clojure, Racket, and Common Lisp have niche uses; it's a powerful modeling language but faces adoption barriers like hiring and tooling.
The ideals of Lisp include a small core, functions as units of thought, and language extension, with many modern concepts rooted in Lisp history.
Learning Lisp, even if not used professionally, provides perspective on other languages by changing what is considered possible in programming.

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