duplicates

How do I duplicate item when using jquery sortable?

由 不羁岁月 提交于 2019-11-26 10:24:57
问题 I am using this method http://jqueryui.com/demos/sortable/#connect-lists to connect two lists that i have. I want to be able to drag from list A to list B but when the item is dropped, i need to keep the original one still in list A. I checked the options and events but I believe there is nothing like that. Any approaches? 回答1: For a beginning, have a look at this, and read @Erez answer, too. $(function () { $("#sortable1").sortable({ connectWith: ".connectedSortable", remove: function (event

In Javascript, how do I check if an array has duplicate values? [duplicate]

由 半城伤御伤魂 提交于 2019-11-26 10:19:45
问题 This question already has answers here : Closed 8 years ago . Possible Duplicate: Easiest way to find duplicate values in a javascript array How do I check if an array has duplicate values? If some elements in the array are the same, then return true. Otherwise, return false. [\'hello\',\'goodbye\',\'hey\'] //return false because no duplicates exist [\'hello\',\'goodbye\',\'hello\'] // return true because duplicates exist Notice I don\'t care about finding the duplication, only want Boolean

Delete duplicate records in SQL Server?

由 ε祈祈猫儿з 提交于 2019-11-26 10:19:35
Consider a column named EmployeeName table Employee . The goal is to delete repeated records, based on the EmployeeName field. EmployeeName ------------ Anand Anand Anil Dipak Anil Dipak Dipak Anil Using one query, I want to delete the records which are repeated. How can this be done with TSQL in SQL Server? You can do this with window functions. It will order the dupes by empId, and delete all but the first one. delete x from ( select *, rn=row_number() over (partition by EmployeeName order by empId) from Employee ) x where rn > 1; Run it as a select to see what would be deleted: select *

Does C# Distinct() method keep original ordering of sequence intact?

由 强颜欢笑 提交于 2019-11-26 09:55:46
问题 I want to remove duplicates from list, without changing order of unique elements in the list. Jon Skeet & others have suggested to use following list = list.Distinct().ToList(); removing duplicates from a list C# Remove duplicates from a List<T> in C# Is it guaranteed that the order of unique elements would be same as before? If yes, please give a reference that confirms this as I couldn\'t find anything on it in documentation. 回答1: It's not guaranteed, but it's the most obvious

TypeError: unhashable type: &#39;list&#39; when using built-in set function

由 五迷三道 提交于 2019-11-26 09:33:43
问题 I have a list containing multiple lists as its elements eg: [[1,2,3,4],[4,5,6,7]] If I use the built in set function to remove duplicates from this list, I get the error TypeError: unhashable type: \'list\' The code I\'m using is TopP = sorted(set(TopP),reverse=True) Where TopP is a list just like in the e.g. Above Is this usage of set() wrong? Is there any other way in which I can sort the above list? 回答1: Sets require their items to be hashable . Out of types predefined by Python only the

Duplicating model instances and their related objects in Django / Algorithm for recusrively duplicating an object

由 ﹥＞﹥吖頭↗ 提交于 2019-11-26 09:23:19
问题 I\'ve models for Books , Chapters and Pages . They are all written by a User : from django.db import models class Book(models.Model) author = models.ForeignKey(\'auth.User\') class Chapter(models.Model) author = models.ForeignKey(\'auth.User\') book = models.ForeignKey(Book) class Page(models.Model) author = models.ForeignKey(\'auth.User\') book = models.ForeignKey(Book) chapter = models.ForeignKey(Chapter) What I\'d like to do is duplicate an existing Book and update it\'s User to someone

How to delete duplicate rows without unique identifier

由 跟風遠走 提交于 2019-11-26 09:19:55
问题 I have duplicate rows in my table and I want to delete duplicates in the most efficient way since the table is big. After some research, I have come up with this query: WITH TempEmp AS ( SELECT name, ROW_NUMBER() OVER(PARTITION by name, address, zipcode ORDER BY name) AS duplicateRecCount FROM mytable ) -- Now Delete Duplicate Records DELETE FROM TempEmp WHERE duplicateRecCount > 1; But it only works in SQL, not in Netezza. It would seem that it does not like the DELETE after the WITH clause?

Find all duplicate documents in a MongoDB collection by a key field

由 独自空忆成欢 提交于 2019-11-26 09:17:42
问题 Suppose I have a collection with some set of documents. something like this. { \"_id\" : ObjectId(\"4f127fa55e7242718200002d\"), \"id\":1, \"name\" : \"foo\"} { \"_id\" : ObjectId(\"4f127fa55e7242718200002d\"), \"id\":2, \"name\" : \"bar\"} { \"_id\" : ObjectId(\"4f127fa55e7242718200002d\"), \"id\":3, \"name\" : \"baz\"} { \"_id\" : ObjectId(\"4f127fa55e7242718200002d\"), \"id\":4, \"name\" : \"foo\"} { \"_id\" : ObjectId(\"4f127fa55e7242718200002d\"), \"id\":5, \"name\" : \"bar\"} { \"_id\"

Getting a random object from NSArray without duplication

由 醉酒当歌 提交于 2019-11-26 09:13:45
问题 I have an NSArray with 17 objects, something like this: NSArray *objArray = [[NSArray alloc]initWithObjects: @\"1\",@\"2\",@\"3\",@\"4\",@\"5\",@\"6\" ,@\"7\",@\"8\",@\"9\",@\"10\",@\"11\",@\"12\",@\"13\",@\"14\",@\"15\",@\"16\",@\"17\", nil]; and an int with a random number as follows: int random = arc4random()%17+1; I want to get a random object from this NSArray without it being a duplicate, even if I closed the app (maybe by using NSUserDefaults ). If I\'ve gotten all the objects I want

What is the best way to remove duplicates in an Array in Java?

由 做~自己de王妃 提交于 2019-11-26 09:11:34
问题 I have an Array of Objects that need the duplicates removed/filtered. I was going to just override equals & hachCode on the Object elements, and then stick them in a Set... but I figured I should at least poll stackoverflow to see if there was another way, perhaps some clever method of some other API? 回答1: I would agree with your approach to override hashCode() and equals() and use something that implements Set . Doing so also makes it absolutely clear to any other developers that the non
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