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.
Although this is probably just pointless nitpicking on my part.
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