duplicates

问题 #include <tcl.h> #include <iostream> using namespace std; char* myTraceProc(ClientData clientData, Tcl_Interp* interp, const char* name1, const char* name2, int flags) { cout << "myTraceProc" << endl; //changing the object return NULL; } int main(int argc, char* argv[]) { Tcl_FindExecutable(argv[0]); Tcl_Interp *interp = Tcl_CreateInterp(); Tcl_TraceVar(interp, "database", TCL_TRACE_WRITES, myTraceProc, 0); return 0; } This is a part of my c++/tcl program. In fact it doesn't show the problem

问题 This question already has answers here : php remove duplicates from array (5 answers) Closed 6 years ago . How do I remove duplicates from an array? Let's say that my I have two arrays named $array and $new_array . $array has contents while $new_array is empty, as seen below: $array = array(5,1,2,1,5,7,10); $new_array = array(); I want $new_array to store the unique values of $array . It kind of goes like this: $array = array(5,1,2,1,5,7,10); $new_array = array(5,1,2,7,10); // removing the 1

问题 I have a list like below L = [[1,2],[1,3],[1,4],[2,1],[2,5],[3,1],[3,2]] The output should be [[1,2],[1,3],[1,4],[2,5],[3,2]] Please note that the order for the pairs and the elements has to be preserved. In other words, I cannot sort the list because the elements order needs to be preserved for the pairs as well. For example, I need the last element [3,2] to be preserved. If i sort them and remove duplicates this will be changed to [2,3] which I do not want. Also when I say I need to remove

问题 I had asked a question earlier that involved loops and lists and received some great feedback. Unfortunately, I've run into a new issue that I just can't seem to solve by myself. My apologies for the large block of code: import random from pprint import pprint petri_dish = [] lst = [y for y in petri_dish if y.status == 1] turn = 1 class Species: #__init__,relocate, fight, and target methods for n in range(20): petri_dish.append(Species(n,0,0,0,0,1)) def reproduce(): class Offspring(Species):

问题 I have an array of List<int> , I'm using LINQ (thanks to this forum), to find duplicates, but after merging lists into one list, how can I retrieve a dictionary like this : KEY -> duplicate value | VALUE -> list index where duplicate was found Actually I'm doing this : List<int> duplicates = hits.GroupBy(x => x) .Where(g => g.Count() > 1) .Select(g => g.Key) .ToList(); Guess I should use SelectMany 回答1: You can map every element to (item, index) and then it will be easy to selected impacted

问题 I have a dataset with a column of Purchase Orders. Many of the PO's are duplicates and I have a list of conditions that I am checking against, one of which, is the count of the duplicate PO's as they occur. I am having trouble discovering exactly how to modify my code to do so. Basically all I need is a something to count occurrences exactly like the formula in this post So far I have code that counts the total of duplicate items per Key as follows: Option Explicit Sub DuplicateOccrencesCount

问题 http://www.pressedweb.com/beta/#portfolio My anchor tags (highlighted in red dashed border) are being created by their own free will. I have no idea how to get rid of them and have been working at this for hours now. Any ideas? Is this some freaky cross-browser bug? Or is it just a problem with my markup? Thanks. 回答1: I thinkg this fix will work for you: div .portfolio .works a img { -moz-box-shadow:1px 2px 3px #222222; opacity:0.8; } div .portfolio .works a { border:1px solid #FF0000;

问题 I have a table_1: id custno 1 1 2 2 3 3 and a table_2: id custno qty 1 1 10 2 1 7 3 2 4 4 3 7 5 1 5 6 1 5 When I run this query to show the minimum order quantities from every customer: SELECT table_1.custno,table_2.qty FROM table_1 LEFT OUTER JOIN table_2 ON table_1.custno = table_2.custno AND qty = (SELECT MIN(qty) FROM table_2 WHERE table_2.custno = table_1.custno ) Then I get this result: custno qty 1 5 1 5 2 4 3 7 How can I get the minimum value of qty per each custno ? How could I do

问题 My query: INSERT INTO `table` (`article_id`, `score_count`) VALUES (1922, '{\"1\":3,\"2\":2,\"3\":10,\"4\":2,\"5\":1}') ON DUPLICATE KEY UPDATE `article_id`= 1922 And my article_id column is set as primary unique key. After I run this I get 0 rows inserted and no update. 回答1: INSERT INTO `table` (`article_id`, `score_count`) VALUES (1922, '{\"1\":3,\"2\":2,\"3\":10,\"4\":2,\"5\":1}') ON DUPLICATE KEY UPDATE `score_count`= '{\"1\":3,\"2\":2,\"3\":10,\"4\":2,\"5\":1}' Since you don't want to

问题 I have a table with the following fields: id (Unique) url (Unique) title company site_id Now, I need to remove rows having same title, company and site_id . One way to do it will be using the following SQL along with a script ( PHP ): SELECT title, site_id, location, id, count( * ) FROM jobs GROUP BY site_id, company, title, location HAVING count( * ) >1 After running this query, I can remove duplicates using a server side script. But, I want to know if this can be done only using SQL query.