S3 method to concatenate Categories and Category objects
S3 method to concatenate Categories and Category objects
## S3 method for class 'Categories' c(...) ## S3 method for class 'Category' c(...)
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An object of class Categories
cat.a <- Category(name = "First", id = 1, numeric_value = 1, missing = FALSE) cat.b <- Category(name = "Second", id = 2) cat.c <- Category(name = "Third", id = 3, missing = TRUE) cats.1 <- Categories(cat.a, cat.b) identical(cats.1, c(cat.a, cat.b)) identical(c(cats.1, cat.c), Categories(cat.a, cat.b, cat.c))
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