Operators

In addition to the . and [] operators discussed in Value and Method Expressions, the unified expression language provides the following operators, which can be used in rvalue expressions only:

• Arithmetic: +, - (binary), *, / and div, % and mod, - (unary)

• Logical: and, &&, or, ||, not, !

• Relational: ==, eq, !=, ne, <, lt, >, gt, <=, ge, >=, le. Comparisons can be made against other values, or against boolean, string, integer, or floating point literals.

• Empty: The empty operator is a prefix operation that can be used to determine whether a value is null or empty.

• Conditional: A ? B : C. Evaluate B or C, depending on the result of the evaluation of A.

The precedence of operators highest to lowest, left to right is as follows:

• [] .

• () (used to change the precedence of operators)

• - (unary) not ! empty

• * / div % mod

• + - (binary)

• < > <= >= lt gt le ge

• == != eq ne

• && and

• || or

• ? :