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问题 I have a book collection with currently 7.7 million records and I have setup a text index as follows that will allow me to search the collection by title and author as follows: db.book.createIndex( { title: "text", author: "text" }, {sparse: true, background: true, weights: {title: 15, author: 5}, name: "text_index"} ) The problem is when I use a search query that will return a lot of results eg John and then sort by the textScore the time to perform the query is over 60 seconds. Please see

问题 I have a book collection with currently 7.7 million records and I have setup a text index as follows that will allow me to search the collection by title and author as follows: db.book.createIndex( { title: "text", author: "text" }, {sparse: true, background: true, weights: {title: 15, author: 5}, name: "text_index"} ) The problem is when I use a search query that will return a lot of results eg John and then sort by the textScore the time to perform the query is over 60 seconds. Please see

问题 I wanted to aggregate the data on a different field and also wanted to get the aggregated data on sorted fashion based on the name. My data is : { "_index": "testing-aggregation", "_type": "employee", "_id": "emp001_local000000000000001", "_score": 10.0, "_source": { "name": [ "Person 01" ], "groupbyid": [ "group0001" ], "ranking": [ "2.0" ] } }, { "_index": "testing-aggregation", "_type": "employee", "_id": "emp002_local000000000000001", "_score": 85146.375, "_source": { "name": [ "Person 02

问题 I wrote code to understand which of them is faster when it comes to search an element in a list. It turns out to be bisect. What I do not understand is what is complexity of bisect algorithm and does it use Van Emde Boas tree? #python inbuilt list search using 'in' took 0.0702499200317 secs def mul3(): a = [1, 2, 4, 5, 6, 7, 8, 10, 12, 42, 55, 65, 69, 95, 96, 101, 156, 199] for x in a: if x in a: print x, "True" else: print x, "False" #using bisect took 0.0649611193601 def mul4(): a = [1, 2,

问题 I am trying to use python to write a function that checks whether the first letter of a given word, for instance "ball" is a vowel in either uppercase or lowercase. So for instance: #here is a variable containing a word: my_word = "Acrobat" #letters in vowel as a list the_vowel = ["a","e","i","o","u"] How do a check that the first letter in "Acrobat" is one of the vowels in the list? I also need to take into consideration whether it is upper or lowercase? 回答1: try my_word[0].lower() in the

问题 I am trying to use python to write a function that checks whether the first letter of a given word, for instance "ball" is a vowel in either uppercase or lowercase. So for instance: #here is a variable containing a word: my_word = "Acrobat" #letters in vowel as a list the_vowel = ["a","e","i","o","u"] How do a check that the first letter in "Acrobat" is one of the vowels in the list? I also need to take into consideration whether it is upper or lowercase? 回答1: try my_word[0].lower() in the

问题 Is it possible to update some specific fields value in elasticsearch with out overwriting other fields. ? 回答1: As a codebased contribution to this answer, the following query may be used: POST /index/type/100100471/_update { "doc" : { "yourProperty" : 10000 } } This query updates yourProperty property only . As a result, this response appears: { "_index": "index", "_type": "type", "_id": "100100471", "_version": 1, "_shards": { "total": 0, "successful": 1, "failed": 0 } } 回答2: Yes,

问题 I am new to Swift and wondering if there any possibilities to place UIsearchcontroller in navgationtitle and to hide and unhide uisearchcontroller by button that is located as navigationRightItem. I have seen many examples with placing the UISearchBar from Object library to the navigationTitle, but there is no example with the uisearchcontroller. Some even say that UISearch bar from object library has been deprecated from ios10 Swift. Please clarify the deprecation and why i should refrain

问题 this is a simple prolog example of recursion. I cannot figure out where, and more or less how, to declare the exit statement. The test flight(sofia, dublin) should return true, but it keeps checking at the last steps if you can directFlight(dublin, dublin). Here is the code: directFlight(sofia, varna). directFlight(sofia, paris). directFlight(sofia, london). directFlight(london, edinburg). directFlight(paris, new_york). directFlight(new_york, seattle). directFlight(london, dublin). flight

问题 I need to add search functionality to my Brightscript scenegraph script for a Roku Channel. Does anyone have a simple Search sample, or a script I can use to add to a "sliding panel" Roku channel script? RoSearch has been depreciated. The current page is very similar to the Sliding Panel example. Need working Search feature on my Roku Channel. <component name = "minikeyboardexample" extends = "Group" initialFocus = "exampleMiniKeyboard" > <script type="text/brightscript" > <![CDATA[ sub init(