[satvikpendem]

> jank is a general purpose programming language. It’s a dialect of Clojure, which is itself a dialect of Lisp. jank is functional-first, but it supports adhoc mutations and effects. All data structures are persistent and immutable by default and jank, following Clojure’s design, provides mechanisms for safe mutations for easy concurrency.

> Beyond Clojure, jank is brethren to C++ and it can reach into C++ arbitrarily to both access and define new C++ types, functions, and templates, at runtime. This is done by JIT (just in time) compiling C++, using Clang and LLVM. The result is that you can write Clojure code which can access C and C++ libraries trivially.

From https://book.jank-lang.org, for those of us who've never heard of this language

[christophilus]

Interesting. The last time I used C++, it was so painful to compile. I love Clojure, though, and a native target is appealing. I wonder how slow the compile/ recompile cycle is in Jank.

[Jeaye]

JIT compiling C++ is definitely the slowest thing we do. However, we're working on two different codegen modes.

1. C++

2. LLVM IR

The IR is much faster to compile, but its perf isn't nearly as good. This is meant to be a nice trade off, during iteration, so that you can use C++ codegen for your release artifact, but stick with IR when you're REPLing. The IR gen is still unstable right now, for the alpha, but we'll have both solidified this year.