Hidden features of Groovy?

Answer 1

In groovy 1.6, regular expressions work with all of the closure iterators (like each, collect, inject, etc) and allow you to easily work with the capture groups:

def filePaths = """
/tmp/file.txt
/usr/bin/dummy.txt
"""

assert (filePaths =~ /(.*)\/(.*)/).collect { full, path, file -> 
        "$file -> $path"
    } ==  ["file.txt -> /tmp", "dummy.txt -> /usr/bin"]