operators {formula.tools} | R Documentation |
Documentation of internal data structures:
relational.operators vector of relational operators: c( '<', '>', '<=', '>=', '==', '!=' )
tilde,tilde-operator '~'. It may include other operators laters
op.types is a hash with operators as keys and the type of opertors as values
inverse.operators is a hash with operators as keys and the inverse of that operator as values.