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							- package govaluate
 
- /*
 
- 	Represents a function that can be called from within an expression.
 
- 	This method must return an error if, for any reason, it is unable to produce exactly one unambiguous result.
 
- 	An error returned will halt execution of the expression.
 
- */
 
- type ExpressionFunction func(arguments ...interface{}) (interface{}, error)
 
 
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