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问题 Let's say I have a column family named Questions like below: Questions = { Who are you: { username: "user1" }, What is the answer: { username: "user1" }... } How do I search for all the questions that contain certain words? Get all questions that contain 'what' word. How do I do it using python or at least Java? 回答1: Solandra (https://github.com/tjake/Solandra) is the new name for Lucandra. Solandra is a combination of Cassandra and Solr (which is based on the Lucene full-text search engine).

问题 Given an ACL list with 10 billion IPv4 ranges in CIDR notiation or between two IPs: x.x.x.x/y x.x.x.x - y.y.y.y What is an effecient search/indexing algorithm for testing that a given IP address meets the critera of one or more ACL ranges? Lets assume most ACL range definitions span a great number of class C blocks. Indexing points via hash tables is easy but try as I might have not been able to come up with a reasonable method for detecting which points are covered by a large list of "lines"

问题 I have a Python datetime timestamp and a large dict (index) where keys are timestamps and the values are some other information I'm interested in. I need to find the datetime (the key) in index that is closest to timestamp, as efficiently as possible. At the moment I'm doing something like: for timestamp in timestamps: closestTimestamp = min(index,key=lambda datetime : abs(timestamp - datetime)) which works, but takes too long - my index dict has millions of values, and I'm doing the search

问题 i am currently working on a CRM system with a huge database. If the user wants to search a customer, he can use the ajax search. Everytime he changes something in the search field, while a call is pending, the old call is cancelled and a new one will be send to the server. My problem is, that the php processes on server side continue running. So if the user starts typing in an address, several requests are started and cancelled and the server needs more and more time to answer. Is is possible

问题 I know this is a long write-up, but it's just one issue I promise. The Setup I'm getting some very strange behavior with a UISearchController. Let me describe the hierarchy, then I'll explain step by step what happens in my video: The first view you see is a regular ViewController, with a tableView and the UISearchController as completely separate entities. The UISearchController has its own searchResultsController that I set when I create it: let searchResultsController =

问题 I use the eclipse File Search option very much to search all files in my workspace for a certain content. But how do I specify that it should only return hits from a fixed search criteria? As an example I would like to find all occurrences of the string: com.mystuff.data but I also get all the hits for: com.mystuff.data.ui How do I make a "this-string-only-search" when searching files in my workspace?? 回答1: If I understand you correctly, Eclipse don't provide option to search exact word. You

问题 I'm trying to search my database and be able to use upper/lower case filter terms but I've noticed while query 's apply analyzers, I can't figure out how to apply a lowercase analyzer on a filtered search. Here's the query: { "query": { "filtered": { "filter": { "bool": { "should": [ { "term": { "language": "mandarin" // Returns a doc } }, { "term": { "language": "Italian" // Does NOT return a doc, but will if lowercased } } ] } } } } } I have a type languages that I have lowercased using:

问题 Is it possible to search for code or text in GitLab inside of files? I can search for files, issues, milestones, etc., but could not find a way to search for code in source files or text in the documentation i.e .doc files. 回答1: It was announced in 5.2: https://about.gitlab.com/2013/05/22/gitlab-5-dot-2-released/ And I can confirm code search is working with 8.4 来源： https://stackoverflow.com/questions/35087844/search-for-code-or-text-in-gitlab

问题 Can someone explain to me how to solve the substring problem iteratively? The problem: given two strings S = S 1 S 2 S 3 … S n and T = T 1 T 2 T 3 … T m , with m is less than or equal to n , determine if T is a substring of S . 回答1: Here's a list of string searching algorithms Depending on your needs, a different algorithm may be a better fit, but Boyer-Moore is a popular choice. 回答2: A naive algorithm would be to test at each position 0 < i ≤ n - m of S if S i+1 S i +2 … S i + m = T 1 T 2 …

问题 I want to find a string in a file and replace it with user input. Here is my rough code. #include <iostream> #include <fstream.h> #include <string.h> int main(){ istream readFile("test.txt"); string readout, search, replace; while(getline(readFile,readout)){ if(readout == search){ // How do I replace `readout` with `replace`? } } } UPDATE Here is the code that solved my problem test.txt: id_1 arfan haider id_2 saleem haider id_3 someone otherone C++ Code: #include <iostream> #include <fstream