Groovy not in collection

Question

The groovy way to see if something is in a list is to use \"in\"

   if(\'b\' in [\'a\',\'b\',\'c\'])

However how do you nicely see if something

Answer 1

Another way to write it is with contains, e.g.

if (!['a', 'b', 'c'].contains('b'))

It saves the extra level of parentheses at the cost of replacing the operator with a method call.

Answer 2

I think there is no not in pretty syntax, unfortunately. But you can use a helper variable to make it more readable:

def isMagicChar = ch in ['a', 'b', 'c']
if (!isMagicChar) ...

Or, in this case, you may use a regex :)

if (ch !=~ /[abc]/) ...