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Regexp parentheses string parsing issue

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Duke
Duke 2014-3-14
编辑： per isakson 2014-3-14
I have a string that looks like:
'Hello (string_here.d) (string)'
I've messed with regexp for the last hour trying to get the 'string_here.d' from within the parentheses with no avail. I thought '([.]+)' or '\([.]+\)' would work, but them I thought it was the '.' causing me trouble so I tried '([.]+\.d)' and '\([.]+\.d\)'. I tried about 100 different variations of the above. What pattern would get me the string in the parentheses that has the . character in it.

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per isakson
per isakson 2014-3-14
编辑：per isakson 2014-3-14
Not the most robust expression, but it works in this case
str = 'Hello (string_here.d) (string)';
cac = regexp( str, '(?<=\()\S+(?=\))', 'match', 'once' )
returns
cac =
string_here.d

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