anchor.diff:    | LessThan
     | GreaterThan 
     | InRange
  +  | Like
   
   type FilterCondition = RelationalOperator * string * string
   
  
positive.code:     | _ -> GetTheData, false
  
    let operators = 
      [ Equals, " eq "; NotEquals, " neq "; LessThan, " lte "; GreaterThan, " gte "; InRange, " in " ]
  
    let parseCondition (cond:string) = 
      let cond = cond.Trim()
  
negative.code: 
  let evalCondition op actual (expected:string) =
    match op, actual with 
    | Like, String s -> s.ToLower().Contains(expected.ToLower())
    | Like, _ -> failwith "Like can only be used on strings"
    | _, Date _ -> failwith "Comparison on dates not supported"
    | Equals, Bool b -> (expected.ToLower() = "true" && b) || (expected.ToLower() = "false" && not b)
    | NotEquals, Bool b -> (expected.ToLower() = "true" && not b) || (expected.ToLower() = "false" && b)
  