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问题 I've had already implemented a function to search for users using the FirebaseDatabase like that: REF_USERS.queryOrdered(byChild: "username_lowercase").queryEnding(atValue: text+"\u{f8ff}").queryLimited(toFirst: 25).queryStarting(atValue: text).observeSingleEvent(of: .value, with: { (snapshot) in snapshot.children.forEach( { (s) in let child = s as! DataSnapshot if let dict = child.value as? [String: Any] { let user = UserInfo.createUser(dict: dict, key: child.key) if user.id! !=

问题 I have 2 lists of instances: list1 list2 each instance contains variables such as id, name, etc... I am iterating through list2, and I want to find entries that don't exist in list1. eg.. for entry in list2: if entry.id in list1: <do something> I'm hoping to find a way to do this without a douple for loop. Is there an easy way? 回答1: I might do something like: set1 = set((x.id,x.name,...) for x in list1) difference = [ x for x in list2 if (x.id,x.name,...) not in set1 ] where ... is additional

问题 I've been going round in circles trying to implement search functionality in my UITableView. I've followed loads of instructions here on stackoverflow and watched a ton of videos on YouTube and I feel like I know how to implement UISearchController now but i'm struggling how to actually filter my array in the updateSearchResultsForSearchController function. I've managed to get search working if I have a simple array of string values as you see in most of the online examples for implementing

问题 I'm using solr for an enterprise application. So far it works well, as I am using a ngram field to search against. It works correctly for partial queries (match against indexed ngrams). But the problem I have is, how to enforce exact query matches?. For an example the query "Test 1" should match exactly the same text as it is when the user enter it with double quotation marks. Currently Since I have used some tokenizers and filters, the double quotation marks get filtered out, there's no

问题 in my application I use several elasticsearch indices, which will contain no indexed documents in their initial state. I consider that can be called "empty" :) The document's mapping is correct and working. The application also has a relational database that contain entities, that MIGHT have documents associated in elasticsearch. In the initial state of the appliation it is very common that there are only entities without documents, so not a single document has been indexed, therefore "empty

问题 I have searched the site but could not find a answer. I have a listbox called "CompetitorDetailsOutput" I then have a textbox above called "searchbox" and a button called "searchbutton" The data in the list box constanly changes and get it data from a .txt file wich stores the data in the following format string.Format("{0},{1},{2},{3},{4},{5},{6},{7},{8},{9},{10},{11},{12}", Name, CPSA, PostCode, Rank, Score1, Score2, Score3, Score4, Score5, Score6, Score7, Score8, TotalSingleScore); the

问题 I am new to elasticsearch and I want to delete documents in my elasticsearch index which are older than 10 days. I want to keep only last 10 days of data.So is there any way to delete last 11nth day index automatically. What I have tried.. DELETE logstash-*/_query { "query": { "range": { "@timestamp": { "lte": "now-10d" } } } } Error I'm getting while running on kibana dev tools { "error": "Incorrect HTTP method for uri [/logstash-*/_query?pretty] and method [DELETE], allowed: [POST]",

问题 I am trying to find a way to match whole words using the Tkinter Text search method, but I have not found a consistent way of doing it. I have tried to set regexp to True and then use word boundaries of the Tcl regular expressions, with \y wrapping the word: pos = text_widget.search('\\y' + some_word +'\\y', start, regexp=True) It seems to work, but I think there might exist another way of doing it. 回答1: Here is a snippet of code that will allow you to search for any regular expression in the

问题 I'm trying to write a statement that searches 2 db columns and returns results. Can this be done easily without the use of a gem like Searchlogic? def self.search(search) if search find(:all, :conditions => ['city LIKE ?', "%#{search}%"]) else find(:all) end end What I have so far is a statement that performs a search on the city field of my database. However, I'd like to include functionality to cover the case of someone searching by state. So if someone types 'CA' the search will return

问题 I'm trying to write a statement that searches 2 db columns and returns results. Can this be done easily without the use of a gem like Searchlogic? def self.search(search) if search find(:all, :conditions => ['city LIKE ?', "%#{search}%"]) else find(:all) end end What I have so far is a statement that performs a search on the city field of my database. However, I'd like to include functionality to cover the case of someone searching by state. So if someone types 'CA' the search will return