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Questions tagged duplicates

60 questions · page 1 of 2

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46
votes
7
answers

Fast ways to avoid duplicates in a List<> in C#

c# list duplicates
asked 2013-06-24T14:57:10.317
21
votes
1
answers

How to avoid adding duplicates in a many-to-many relationship table in SQLAlchemy - python?

python sqlalchemy many-to-many duplicates unique
asked 2013-04-16T10:44:06.123
9
votes
1
answers

How to bulk insert only new rows in PostreSQL

sql postgresql insert duplicates bulk
asked 2013-04-05T12:56:55.110
11
votes
2
answers

Remove duplicate observations based on set of rules

r duplicates
asked 2013-03-22T17:48:15.020
13
votes
1
answers

Return FALSE for duplicated NA values when using the function duplicated()

r comparison duplicates missing-data
asked 2012-11-27T11:44:12.283
89
votes
4
answers

TypeError: unhashable type: 'list' when using built-in set function

python list duplicates
asked 2012-11-19T23:19:01.110
18
votes
4
answers

Duplicate json property when converting java object to json string using jackson

java json properties duplicates jackson
asked 2012-11-07T03:18:18.033
34
votes
10
answers

Using Binary Search with sorted Array with duplicates

java duplicates binary-search
asked 2012-11-02T14:48:56.123
165
votes
9
answers

Does adding a duplicate value to a HashSet/HashMap replace the previous value

java hashmap duplicates hashset
asked 2012-10-17T18:14:14.990
22
votes
13
answers

How to remove duplicate words using Java when words are more than 200 million?

java duplicates
asked 2012-09-19T18:57:22.760
23
votes
3
answers

Merge two object arrays and remove duplicated objects then sort by column value

php arrays sorting object duplicates
asked 2012-08-09T06:03:52.240
29
votes
3
answers

How do I create a multiple column unique constraint in SQL Server

sql-server indexing duplicates
asked 2012-08-01T07:46:21.137
25
votes
15
answers

PHP MySQL Copy a row within the same table... with a Primary and Unique key

php mysql duplicates row
asked 2012-07-26T01:03:24.740
9
votes
3
answers

R, conditionally remove duplicate rows

r conditional-statements duplicates
asked 2012-05-31T14:08:03.110
12
votes
7
answers

Finding duplicate entries in Collection

java collections duplicates equality
asked 2012-05-25T13:53:05.903
13
votes
4
answers

SQL - Remove the duplicate Results

sql duplicates
asked 2012-05-18T21:16:07.313
11
votes
4
answers

Count duplicates within an Array of Objects

javascript arrays object count duplicates
asked 2012-05-10T19:42:52.957
735
votes
43
answers

How do I find the duplicates in a list and create another list with them?

python list duplicates
asked 2012-03-23T07:59:59.350
16
votes
5
answers

What are the implications of having duplicate classes in java jar?

java class ant jar duplicates
asked 2012-01-24T21:05:47.153
23
votes
6
answers

Removing duplicate columns and rows from a NumPy 2D array

python numpy scipy duplicates
asked 2011-12-19T11:10:27.700
11
votes
2
answers

How to remove duplicate rows from matrix

arrays matlab matrix duplicates
asked 2011-11-10T21:07:37.093
12
votes
5
answers

Returning duplicates in a sequence

clojure duplicates sequence
asked 2011-11-08T20:23:37.880
44
votes
17
answers

How can I remove duplicate words in a string with Python?

python string duplicates
asked 2011-10-17T13:08:35.987
27
votes
5
answers

Duplicate TCP traffic with a proxy

tcp proxy duplicates traffic haproxy
asked 2011-08-30T17:59:51.353
20
votes
6
answers

Fuzzy matching deduplication in less than exponential time?

algorithm duplicates time-complexity fuzzy record-linkage
asked 2011-08-25T19:25:38.883
12
votes
2
answers

Finding duplicate values in dictionary and print Key of the duplicate element

c# collections dictionary compare duplicates
asked 2011-08-24T08:13:59.433
64
votes
9
answers

Find duplicated rows (based on 2 columns) in Data Frame in R

r duplicates dataframe
asked 2011-08-08T18:19:18.523
61
votes
6
answers

How do I duplicate item when using jquery sortable?

jquery list drag-and-drop duplicates jquery-ui-sortable
asked 2011-08-04T11:14:50.610
741
votes
8
answers

Find duplicate lines in a file and count how many time each line was duplicated?

file count find duplicates lines
asked 2011-07-15T19:53:00.703
25
votes
9
answers

How to delete duplicates in SQL table based on multiple fields

mysql sql duplicates
asked 2011-06-24T17:25:43.597
12
votes
2
answers

Instability in DeleteDuplicates and Tally

wolfram-mathematica duplicates precision
asked 2011-05-29T09:22:19.267
11
votes
4
answers

Rails clone copy or duplicate

ruby-on-rails-3 duplicates copy clone
asked 2011-04-19T04:01:25.120
10
votes
8
answers

How to remove duplicated records\observations WITHOUT sorting in SAS？

sorting sas duplicates
asked 2011-04-18T03:42:46.933
23
votes
4
answers

How do you get the duplicate key that ToDictionary() has failed on?

c# dictionary duplicates
asked 2011-04-06T22:25:59.210
22
votes
5
answers

How to raise error if duplicates keys in dictionary

python dictionary duplicates
asked 2011-02-15T01:54:30.333
128
votes
9
answers

How to find all duplicate from a List<string>?

c# list duplicates
asked 2011-01-02T12:02:54.080
13
votes
10
answers

STL + Ordered set + without duplicates

c++ collections stl duplicates std
asked 2010-12-16T16:54:25.170
47
votes
10
answers

How can I remove duplicate entries from a data table

c# .net datatable duplicates
asked 2010-12-11T06:26:15.033
711
votes
17
answers

Removing duplicate rows in Notepad++

duplicates notepad++
asked 2010-10-18T10:42:56.057
71
votes
10
answers

Scala: Remove duplicates in list of objects

list scala collections duplicates sequence
asked 2010-10-12T08:22:25.463
185
votes
9
answers

How to get duplicate items from a list using LINQ?

c# linq duplicates
asked 2010-09-28T09:38:57.160
61
votes
11
answers

Check and return duplicates array php

php arrays duplicates
asked 2010-08-10T14:28:10.787
38
votes
9
answers

How to remove duplicate entries from a mysql db?

mysql duplicates
asked 2010-05-19T16:35:17.380
183
votes
18
answers

Regular expression for duplicate words

regex duplicates backreference capture-group
asked 2010-05-12T21:51:39.323
11
votes
4
answers

What is the most elegant way to find index of duplicate items in C# List

c# search list duplicates
asked 2010-04-27T04:53:19.723
2545
votes
37
answers

Finding and deleting duplicate values in a SQL table

sql duplicates
asked 2010-04-07T18:17:29.067
13
votes
8
answers

Show duplicates in Mathematica

list duplicates wolfram-mathematica
asked 2009-10-27T14:11:10.863
88
votes
6
answers

How can I mark/highlight duplicate lines in VI editor?

vim duplicates
asked 2009-08-12T18:53:03.273
37
votes
7
answers

Return only duplicated entries from an array (case-insensitive)

php arrays duplicates filtering case-insensitive
asked 2009-08-11T09:54:17.187
103
votes
7
answers

counting duplicates in a sorted sequence using command line tools

bash command-line sorting count duplicates
asked 2009-07-07T13:40:26.277
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