连字符的正则表达式

Question

I am looking for a regex to match words (no spaces in them) that have at least one number, one letter (a-zA-Z), and at least one hyphen. And the total size should be between 4 and 40.

Examples:

hi how are you h9-11c matches h9-11c

foo 79d-11c-afac bar matches 79d-11c-afac

foo dc-afac bar does not match - no number

I have come up with this so far:

\b(?=.*\d)(?=.*[a-zA-Z])(?=.*-).{4,40}\b

but it doesn't match just one word (it's a bit greedy)

Answer 1

Use \\S to match non-whitespace characters.

Also, \\b matches on boundaries of alphanumberic characters, but you have defined your words to be any non-whitespace.

(?<!\S)(?=\S*\d)(?=\S*[a-zA-Z])(?=\S*-)\S{4,40}(?!\S)