Chapter 4: Operators
Operators are one of two basic building blocks of expressions (the other one is objects discussed in the previous Chapter). Operators on a single object are referred as unary operators; operators on two objects are referred as binary operators. DolphinDB supports many types of primitive operators including arithmetic operators, boolean operators, relational operators, membership operators, etc. In addition, all built-in or user-defined unary or binary functions can serve as operators in DolphinDB.