I need to identify a string contain at least one character or digit and it may contain special character too
@#$@$#@$
--- false
@#$@$#@$1
--- true
@#$@$#@$w
--- true
@#$@$#@$R
--- true
下面的模式应该适合你
[\d\w] or [a-zA-Z0-9]
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