indexed

问题 I want to construct some arrays that will remain in order to get fast searches. If I use something like this: let dictionary: [Int:Int] = [:] for i in 0 ..< 10000000 { dictionary[i] = 0 } Would the query: dictionary[n] == nil be performed in logarithmic time? If yes, is it the same for other types: Float, Double, String. And finally, I need it to work with the UUID type, will it work? 回答1: Swift's Dictionary is implemented with a hash table, therefore lookups will typically be done in O(1)

问题 I'm having trouble understanding how to get repositories in the "Indexed Maven Repositories" list of the IntelliJ IDEA. In one my project I have two repos in this list: one local and one (main) remote (see attached screenshot below). And in other project (created using AppFuse template) I have only one (local) repo in list. I'm tried to add the repos in pom.xml file and in settings.xml file, but the repos did not appear in this "magic" list. And this means: I can't see artifactId and versions