There are a few efforts out there to provide something with near instant start up time. Can be useful for scripting, for example. Planck, which runs on JavaScr

There are a few efforts out there to provide something with near instant start up time. Can be useful for scripting, for example. Planck, which runs on JavaScriptCore: http://planck-repl.org/ http://planck-repl.org/ Lumo, which runs on V8: https://github.com/anmonteiro/lumo https://github.com/anmonteiro/lumo