regEx.groovy

def today= new Date() //represents the date and time when it is created
println today
def tomorrow= today + 1,
    dayAfter= today + 2,
    yesterday= today - 1,
    dayBefore= today - 2
println "\n$dayBefore\n$yesterday\n$today\n$tomorrow\n$dayAfter\n"
assert today + 7 == today.plus(7) && today - 15 == today.minus(15)


println String.format('%tF', today)  


def TEXT =/^(*TEXT)(+)(+/+/+) PAGE (+)/ 


// extract basename
src = 'c:/some/path/file.ext'
dst = src.replaceFirst('^.*/', '')
dst 

usPhoneRegex = /^[01]?[- .]?(\([2-9]\d{2}\)|[2-9]\d{2})[- .]?\d{3}[- .]?\d{4}$/
numbers = '''
(425) 555-0123
425-555-0123
425 555 0123
1-425-555-0123
'''.trim().split('\n').toList()
assert numbers.every{ it ==~ usPhoneRegex }


m = '2007-2-28' =~ /(\d{4})-(\d\d?)-(\d\d?)/
  m.matches()
assert ['2007', '2', '28'] == [m[0][1], m[0][2], m[0][3]]


println m[0]