What Blocks Ruby and Python from Getting to JavaScript V8 Speed? | Hacker NewsThe other major issue is backwards compatibility. Ruby and Python have large API surfaces on both the C API and scripting language sides, with many libraries making use of obscure language features. If any single one of those features doesn't work, the library won't. Witness how tough the Python3 migration has been.I talked with the Unladen Swallow guys sometime after the project was canceled. The
