*= operator in formula language in lotus notes

Question

Please tell me what is the role of *= operator in below piece of code

@If(@UserRoles *= "[admin]" ; "" ; @Return(""));

It is formula language used in lotus notes databases.

Answer 1

That is a Permuted Equal.

 if a="this" or a="that" or a="other" then....

So this code sets to "" if is admin, otherwise it bails with a "".

Agree with @rhsatrhs, this is unclear and should be written using a normal =.

Here is a link to the Permutations operators official documentation.