"duplicated" method for Crunch objects

duplicated(x, incomparables = FALSE, ...)

# S4 method for class 'CrunchVariable'
duplicated(x, incomparables = FALSE, ...)

# S4 method for class 'CrunchExpr'
duplicated(x, incomparables = FALSE, ...)

Arguments

x

CrunchVariable or CrunchExpr

incomparables

Ignored

...

Ignored

Value

A CrunchLogicalExpr that evaluates TRUE for all repeated entries after the first occurrence of a value.