Find the first occurrence of an operator in a formula and return the left, right, or both sides of the operator.
Source:R/parse_formula_to_cols.R
findOperator.Rd
Find the first occurrence of an operator in a formula and return the left, right, or both sides of the operator.
Arguments
- x
The formula to parse
- op
The operator to search for (e.g.
+
,-
,*
,/
, ...)- side
Which side of the operator would you like to see: 'left', 'right', or 'both'.
Value
The side of the operator requested, NA if requesting the left side of a unary operator, and NULL if the operator is not found.
See also
Other Formula parsing:
parse_formula_to_cols()