3 ms·
What I'm saying is that the pipe (or) "|" is a cheap way to combine regexps. It has its limitations, but its better than an O(n) search through an array. The re
by andrewvc 12y ago
What I'm saying is that the pipe (or) "|" is a cheap way to combine regexps. It has its limitations, but its better than an O(n) search through an array. The regexp parser can create an NFA that is far more optimized.
- spion 12y agoIn JS, "far more" isn't quite that dramatically far as in other dynamic language runtimes. See http://jsperf.com/regex-list-vs-full http://jsperf.com/regex-list-vs-full