13.10. Binding Variable Examples

This is an example of a property bound to a variable:

// 2 persons of the same age
Person( $firstAge : age ) // binding
Person( age == $firstAge ) // constraint expression

// 2 persons of the same age
Person( $firstAge : age ) // binding
Person( age == $firstAge ) // constraint expression

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Note

For backwards compatibility reasons, it's allowed (but not recommended) to mix a constraint binding and constraint expressions as such:

// Not recommended
Person( $age : age * 2 < 100 )

// Not recommended
Person( $age : age * 2 < 100 )

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// Recommended (separates bindings and constraint expressions)
Person( age * 2 < 100, $age : age )

// Recommended (separates bindings and constraint expressions)
Person( age * 2 < 100, $age : age )

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