4 ms·
If a regex is required to only match x if p(x), is the regex required to match ALL x such that p(x)? Although this is probably just pointless nitpicking on my
by drdeca 13y ago
If a regex is required to only match x if p(x), is the regex required to match ALL x such that p(x)?
Although this is probably just pointless nitpicking on my part.
- jakobsen 13y agoOf course it is required (within the computational limits of your computer, of course) If p(x) means 'x is an integer', you could use the regex /^1$/ since it matches integers only (in particular, the integer 1). That's not sufficient, you need to match all integers. edited:format
- algorias 13y agoIt's required to match all such x, otherwise the empty regex "" trivially satisfies the requirement.