re = /^(?!.*(?:^|[^a-z0-9])#)(?!.*#(?:$|[^a-z0-9])).+$/m
str = 'ex_date( ds23d#d4ff5 )
ex_date( asa#ss32as, #, s3ds#sdsd)
ex_date12(asa#ss32as,#,s3ds#sdsd)
( asa#ss32as, a#b, s3ds#sdsd)
date( asa#ss32as, #, s3ds#sdsd, a#b)
ex_date( asa#ss32as, a#b, s3ds#sdsd, 4#5)
ewe#ewe
we#ere, er2e#er3e, #
p_price(we#ee)
p_date( we#rer , )
p_car ( df#e ,)
re#ee , erer#r,
#wewqwq
ddf$%^#gfg^h'
# Print the match result
str.scan(re) do |match|
puts match.to_s
end
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html