How to see if ‘foo’ is a unique entry in comma-separated list ‘foo,bar,foobar,foo,foo’?
We want to match the ‘foo’ at the beginning, at the end, and also in the middle, but not as part of the word ‘foobar.’ Also the comma-separated list might only be ‘foo’.
Plain wrong, because ^ means something different inside a set
Works, but clunky.
Works perfectly. Especially when you remember to escape the ” in your .NET string assignment
Thanks to the Rad Software Regular Expression Designer too!