Expression

Category: Core

A class that stores an expression you can execute.

An expression can be made of any arithmetic operation, built-in math function call, method call of a passed instance, or built-in type construction call.

In the following example we use a node to write our expression and show the result.

• Variant execute ( inputs=[ ], Object base_instance=null, show_error=true )

Executes the expression that was previously parsed by parse and returns the result. Before you use the returned object, you should check if the method failed by calling .

If you defined input variables in parse, you can specify their values in the inputs array, in the same order.

• has_execute_failed ( ) const

Returns if execute has failed.

• parse ( String expression, input_names=PoolStringArray( ) )

Parses the expression and returns a Error.

You can optionally specify names of variables that may appear in the expression with , so that you can bind them when it gets executed.