How to handle “argument 'incomparables != FALSE' is not used (yet)”?

Question

I want to check if a row in data.frame() is a duplicate of an existing row. As already pointed out here one way might to be to use the duplicate function. However, if I\'m using

Answer 1

If you replaceduplicated function with match_df from plyr, the issue should be resolved.

library(plyr) # for match_df
table <- NULL;

foo <- function(n, d, nh, v){
  newEntry <- data.frame(node_i=n, node_j=nh, dst=d, phi=v);

  if(length(table != 0)){
    if(nrow(plyr::match_df(table, newEntry))){
      add(n, nh, d, v);
    }else{
      print("it is a duplicate!")    
    }
  }else{
    add(n, nh, d, v);
  }
}

add <- function(n, d, nh, v){
  rbind(table, data.frame(node_i=n, node_j=nh, dst=d, phi=v)) ->> table;
}

bar <- function(){
  foo(23,42,5,4.0);
  print(table);
  foo(22,42,5,4.0);  
  print(table);
  foo(23,42,5,4.0);
  print(table);
}

Output

> bar()
node_i node_j dst phi
1     23     42   5   4
Matching on: node_i, node_j, dst, phi
[1] "it is a duplicate!"
node_i node_j dst phi
1     23     42   5   4
Matching on: node_i, node_j, dst, phi
[1] "it is a duplicate!"
node_i node_j dst phi
1     23     42   5   4
> table
node_i node_j dst phi
1     23     42   5   4