21 Jul
2017
21 Jul
'17
5:59 p.m.
Somehow I didn't get this reply for a while. On Sat, 2017-07-15 at 15:44 +0100, John Maddock via Boost-users wrote:
On 15/07/2017 14:12, Nick via Boost-users wrote:
Why does it need two '?' operators instead of only one?
Non-greedy, matches nothing for preference, otherwise abc, same as "(?:)|abc" does.
Good to know, thanks. Makes me wonder what scenario(s) that would be useful for