Eileen Collins with her young daughter Bridget
Lean already produces performance comparable to Haskell and OCaml. When higher performance is essential, Lean models can be translated into efficient imperative code embedded in Lean, with clean semantics and without C’s undefined behavior. We are actively working on closing the remaining gap for performance-critical code. The real comparison is not Lean versus C. It is verified code versus unverified code.，更多细节参见91视频
-D CMAKE_INSTALL_PREFIX=/usr/local # specify the install path，推荐阅读safew官方版本下载获取更多信息
guaranteed linear behavior