perf: set use.names to false in unlist where applicable

R/Design.R

@@ -100,7 +100,7 @@ Design = R6Class("Design",
       # we need to make sure that every param has a (maybe empty) row in the graph table
       fillin = data.table(id = ps$ids(), parents = list(character(0L)))
       graph = rbind(graph, fillin[fillin$id %nin% graph$id, ])
-      graph = graph[, list("parents" = list(unlist(get("parents")))), by = "id"]
+      graph = graph[, list("parents" = list(unlist(get("parents"), use.names = FALSE))), by = "id"]
       topo = topo_sort(graph)
       pids_sorted = topo$id
       storage_types = ps$storage_type

R/Domain_methods.R

@@ -175,7 +175,7 @@ check_domain_vectorize = function(ids, values, checker, more_args = list()) {
       if (isTRUE(ch)) NULL else sprintf("%s: %s", id, ch)
     })
   }
-  errors = unlist(errors)
+  errors = unlist(errors, use.names = FALSE)
   if (!length(errors)) return(TRUE)
   str_collapse(errors, sep = "\n")
 }

R/ParamSet.R

@@ -81,7 +81,7 @@ ParamSet = R6Class("ParamSet",
         # fastest way to init a data.table
         private$.tags = structure(list(
             id = rep(paramtbl$id, lengths(paramtbl$.tags)),
-            tag = unlist(paramtbl$.tags)
+            tag = unlist(paramtbl$.tags, use.names = FALSE)
           ), class = c("data.table", "data.frame")
         )
       } else {
@@ -542,7 +542,7 @@ ParamSet = R6Class("ParamSet",
         }
         msg
       })
-      errors = unlist(errors)
+      errors = unlist(errors, use.names = FALSE)
       if (!length(errors)) return(TRUE)
       str_collapse(errors, sep = "\n")
     },
@@ -816,7 +816,7 @@ ParamSet = R6Class("ParamSet",
         deps = self$deps
         if (nrow(deps)) { # add a nice extra charvec-col to the tab, which lists all parents-ids
           on = NULL
-          dd = deps[, list(parents = list(unlist(on))), by = "id"]
+          dd = deps[, list(parents = list(unlist(on, use.names = FALSE))), by = "id"]
           d = merge(d, dd, by = "id", all.x = TRUE)
         }
         v = named_list(d$id) # add values to last col of print-dt as list col
@@ -863,7 +863,7 @@ ParamSet = R6Class("ParamSet",
         assert_list(v, any.missing = FALSE, types = "character")
         if (length(v)) assert_names(names(v), permutation.of = private$.params$id)
         # as.character() to handle empty lists and resulting NULL-valures.
-        private$.tags = data.table(id = rep(as.character(names(v)), map_int(v, length)), tag = as.character(unlist(v)), key = "id")
+        private$.tags = data.table(id = rep(as.character(names(v)), map_int(v, length)), tag = as.character(unlist(v, use.names = FALSE)), key = "id")
         setindexv(private$.tags, "tag")
         # return value with original ordering
         return(v)

R/ParamSetCollection.R

@@ -169,7 +169,7 @@ ParamSetCollection = R6Class("ParamSetCollection", inherit = ParamSet,
       }
       if (tag_sets && n != "") paramtbl[, .tags := map(.tags, function(x) c(x, sprintf("set_%s", n)))]
       if (tag_params) paramtbl[, .tags := pmap(list(.tags, original_id), function(x, n) c(x, sprintf("param_%s", n)))]
-      newtags = paramtbl[, .(tag = unique(unlist(.tags))), by = "id"]
+      newtags = paramtbl[, .(tag = unique(unlist(.tags, use.names = FALSE))), by = "id"]
       if (nrow(newtags)) {
         private$.tags = setkeyv(rbind(private$.tags, newtags), "id")
       }