Custom Operators

Custom Operators can be defined in Header Files or in the header of a class file. Note that it is not possible to define custom operators anywhere else.
The following syntax is used to define a custom operator:
1.The type of operator
infix
prefix
postfix
2.The keyword operator
3.The symbol
4.An optional secondary symbol for ternary operators - only valid after infix operator
5.An optional list of additional comma-separated properties within curly braces. Allowed properties:
precedence followed by an integer literal
associativity followed by one of
none
left
right
Example:
prefix  operator &
postfix operator ^
infix operators also need additional properties to be fully defined, namely a precedence value and an associativity type.
You can define these properties in curly brackets after the name of the operator:
infix operator +- { none,             120 }
//                  ^ associativity   ^ precedence
It is optional, but recommended for clarity, to type out which property is being defined:
infix operator +- { associativity none, precedence 120 }
infix operator +- { associativity none,            120 }
infix operator +- {               none, precedence 120 }
The order in which the properties are placed within the brackets does not matter. Duplicate properties are not permitted and will cause a diagnostic error.
Associativity
Ternary Operators
Last modified 4yr ago