> Crystal is the closest I've seen to match that And it's 20 times faster than MRI Ruby JIT 3.0, see http://software.rochus-keller.ch/are-we-fast-yet_crystal_r

> Crystal is the closest I've seen to match that And it's 20 times faster than MRI Ruby JIT 3.0, see http://software.rochus-keller.ch/are-we-fast-yet_crystal_ruby_2_3_lua_node_i386_results_2020-12-23.pdf http://software.rochus-keller.ch/are-we-fast-yet_crystal_rub.... It's a pity Ruby typing went in another direction. > The trade off for that powerful type inference is a slow compiler. When run in the default (i.e. no release, debug) mode, build time is ok, especially for rebuilds when only one file has changed which is less than a second. Release builds are slow (see my PDF).