Lean 4 (Meta)programming Cookbook

A Basic Tactic🔗

This is a very basic tactic that does nothing. This is just to show how to define a tactic in Lean.

open Lean Elab Tactic elab "hello_tactic" : tactic => do return example : 1 = 1 := 1 = 1 1 = 1 All goals completed! 🐙