1.

When is the usage of a set more preferable than an array in ios Swift?

Answer»

If all of the following conditions are met, you should use a set rather than an array:

  • You only want to add each item once. DUPLICATES are never PERMITTED in sets.
  • The order of the items in the COLLECTION is irrelevant to you.
  • You are storing Hashable types, either your own or those provided by Swift, such as strings and integers. Hash values are used in sets to look for things QUICKLY.


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