operator.tools (version 1.6.3.1)

rel.type: Get the relational type of a relational operator.

Description

rel.type gets the relational type of a relational operator. The relational type is one of 'gt', 'lt', 'eq', 'ne'.

Usage

rel.type(x)

Value

character value of the operator. One of: 'gt', 'lt', 'eq', 'ne'.

Arguments

x

An operators expressed as a function or name

Author

Christopher Brown

Details

A relational operator is an operate that relates the relationship between arguments. The core relational operators are: >, >=, <, <=, ==, !=,

The relational.type is a simple roll-up of these operators. > and >= are gt, etc. The value is retrieved from .Options$operators[[x]][['rel.type']] and can be defined for relational operators using setOperator.

A relational type provides an indication of nature of the relational operator.

See Also

operators, setOperator

Examples

 if (FALSE) {
  rel.type( `==` ) 
  rel.type( as.name('==') )
 }