Creates a mutator function based on a specified binary operator.
The output mutator function updates a variable in the parent frame by
applying the binary operator with a given value. It's recommended to use
this function to easily construct special functions in the form of %f%
where f can be any symbol of choice. See examples.
Usage
createMutator(binaryOperator)
Value
A function that takes a variable and a value, applying the binary
operator to update the variable in the parent frame.
Arguments
binaryOperator
A binary operator function to apply for the mutation.