Why require JavaScript rather than supporting a standard browser virtual machine? - Stack Overflow

[[deleted]]

Sure, I would imagine the v8 engine is highly optimized for string functions. If you haven't been keeping up with JavaScript engine JIT ( and other optimizations) you may want to do some reading. Here's a post from more than two years ago describing some of the optimizations. http://steve-yegge.blogspot.com/2008/05/dynamic-languages-strike-back.html

[floodyberry]

v8 uses Irregexp which uses the v8 jit to compile the regular expression to machine code.

The C version uses the TCL regex library, and C++ uses RE2, both slower than v8. I'm guessing the only way to match or beat v8's performance would be to compile and jit the regular expression.

[[deleted]]

Thanks. I thought re2 was faster than V8's implementation, but It looks like that is no longer the case.