no_duplicates: Returns TRUE if no values are duplicated
In momeara/SEAR: R Tools for working with the Similarity Ensemble Approach Program

Description Usage Arguments Details Value See Also Examples

This function tests if values in the sepcified columns have no duplicate values. This the inverse of duplicated. This is a convenience function meant to be used as a predicate in an assertr verify statment.

1	no_duplicates(...)

...

columns from the data.frame

Warning: Since this uses duplicated, the columns are pasted together with '\t', this will fail if any of the specified columns contain '\t' characters.

A vector of the same length that is TRUE when the values in the specified columns are distinct

duplicated

z <- data.frame(a=c(1,2,3,4,5,6), b=c(1,1,1,3,3,3), c=c(1,2,3,1,2,3))
zz <- z %>% verify(no_duplicates(a))
zz <- z %>% verify(no_duplicates(b))    # verification failed! (4 failures)
zz <- z %>% verify(no_duplicates(c))    # verification failed! (3 failures)
zz <- z %>% verify(no_duplicates(a,b))
zz <- z %>% verify(no_duplicates(a,c))
zz <- z %>% verify(no_duplicates(b,c))
zz <- z %>% verify(no_duplicates(a,b,c))