I have the following Regex in PHP and other code that is doing a great job.
/^(?:(?=[^ ]+\d)(?:[A-Z0-9]+))|(?:[A-Z0-9]+) +?(?=.*\d)(?:[A-Z0-9]+)?
It turns out that Go doesn't support lookheads and I'm at a loss on how to convert it across.
The Debuggex link has some test data I was using to qualify the code before.
分享 Firstly, the left hand side of the alternation /^... matches nothing, because / can never appear before start of input.
That leaves just (?:[A-Z0-9]+) +?(?=.*\d), which can be expressed as:
((?:[A-Z0-9]+) ).*\d.*
The term " +?" as used is identical in effect to just " ".
Note however that this consumes more input than the original, which is unavoidable. Your original match is now in group 1.
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