Questions tagged [collections]

91

votes

2

answers

In what situations is the CopyOnWriteArrayList suitable?

java collections

asked 2013-07-25T08:42:55.667

20

votes

3

answers

Java: how to ensure serializable collections

java serialization collections

asked 2013-07-23T08:23:07.107

32

votes

6

answers

How to create ArrayList (ArrayList<Integer>) from array (int[]) in Java

java arrays generics collections

asked 2013-07-08T07:15:52.927

14

votes

6

answers

Hashcode for NULL key in HashMap

java collections hashmap

asked 2013-06-24T04:49:59.860

37

votes

2

answers

Add one item multiple times to same List

c# collections

asked 2013-06-18T12:40:25.343

18

votes

2

answers

HashMap.this.clear() what does this mean, how does this work

java collections

asked 2013-06-08T12:38:01.667

14

votes

2

answers

Java TreeSet: remove and contains() not working

java collections set

asked 2013-06-06T19:07:19.417

8

votes

2

answers

Generics: Cannot convert from Collections.emptyList() to List<String>

java generics collections empty-list

asked 2013-05-28T05:59:59.183

9

votes

1

answers

Order By vs Sort for creating ordered collection

c# sorting collections

asked 2013-05-16T08:37:15.190

28

votes

6

answers

Collection that will maintain insertion order and no duplicates

java collections

asked 2013-05-10T10:44:14.407

9

votes

2

answers

Java Generics for Upper bound & lower bound wild cards

java generics collections wildcard

asked 2013-04-24T10:09:28.710

22

votes

2

answers

120 mongodb collections vs single collection - which one is more efficient?

mongodb collections sharding

asked 2013-04-19T07:04:39.013

11

votes

1

answers

Concurrent collection for .NET with timeouts?

c# .net collections concurrency timeout

asked 2013-04-10T14:49:42.440

9

votes

2

answers

Difference between 2 collections? (elements in collection1, but not in collection2)

java list collections set guava

asked 2013-04-10T12:17:46.303

11

votes

2

answers

Unexpected Performance Penalty in Java

java performance collections

asked 2013-04-09T13:58:24.100

11

votes

1

answers

Why heap is better than binary tree to represent a priority queue?

data-structures collections implementation priority-queue binary-heap

asked 2013-03-26T12:47:18.293

12

votes

5

answers

Scala conditional list construction

scala collections

asked 2013-03-22T10:58:34.570

94

votes

10

answers

why HashMap Values are not cast in List?

java arraylist collections hashmap

asked 2013-03-20T11:41:51.060

10

votes

3

answers

What .NET 4.0 System.Collections.Concurrent collection added in functionality to .NET 3.0 SynchronizedCollection?

c# multithreading collections concurrency thread-safety

asked 2013-02-27T08:03:40.043

9

votes

5

answers

Is T[] not better than IEnumerable<T> as parameter type? (Considering threading challenges)

c# multithreading collections thread-safety ienumerable

asked 2013-02-20T12:10:18.477

123

votes

4

answers

What is the difference between Collections.emptyList() and Collections.EMPTY_LIST

java list collections

asked 2013-02-14T08:43:21.710

190

votes

15

answers

How to copy a java.util.List into another java.util.List

java collections copy

asked 2013-01-14T13:52:50.337

16

votes

2

answers

UnsupportedOperationException - the removeAll method is not supported by this collection (Java Collections)

java collections

asked 2013-01-07T17:57:11.437

14

votes

6

answers

Collection - Iterator.remove() vs Collection.remove()

java collections iterator concurrentmodification

asked 2013-01-07T16:58:02.370

20

votes

6

answers

Safe cast to hash map

java collections dictionary hashmap

asked 2012-12-18T01:05:39.653

17

votes

5

answers

Java 7 API design best practice - return Array or return Collection

java collections

asked 2012-11-29T10:47:02.540

19

votes

4

answers

C# listbox Collection syntax

c# linq collections listbox ienumerable

asked 2012-11-26T15:14:23.640

10

votes

6

answers

How do I shuffle two arrays in same order in java

java arrays list collections

asked 2012-11-23T16:39:59.373

15

votes

4

answers

How can I do a conditional collectEntries in groovy

dictionary collections groovy

asked 2012-11-22T18:34:55.810

32

votes

2

answers

Is this a breaking change between AutoMapper 2.0.0 and 2.2.0?

c# collections ienumerable automapper automapper-2

asked 2012-11-21T20:36:55.503

8

votes

10

answers

How to sort a List<Enum, Collection> by order of an enum?

java collections enums

asked 2012-11-19T07:26:52.590

12

votes

5

answers

Counter in Collections module Python

collections counter python-import importerror python-2.6

asked 2012-11-09T15:38:21.753

49

votes

7

answers

How to search in a List of Java object

java list search collections

asked 2012-10-30T12:28:07.753

12

votes

4

answers

The type T is not generic; it cannot be parameterized with arguments <?> error in a generic function

java generics collections

asked 2012-10-25T09:58:33.920

21

votes

2

answers

Is the defaultdict in Python's collections module really faster than using setdefault?

python collections defaultdict setdefault python-collections

asked 2012-09-23T20:25:48.297

17

votes

2

answers

Generic class compiles in Java 6, but not Java 7

java generics collections java-7 java-6

asked 2012-08-30T22:00:19.357

84

votes

9

answers

Java: How to convert String[] to List or Set

java arrays collections converters

asked 2012-08-16T11:58:31.857

43

votes

9

answers

Java: Composite key in hashmaps

java collections hash hashmap

asked 2012-07-28T11:35:11.347

9

votes

4

answers

What does a hashset do with memory when initializing a collection?

c# performance memory collections hashset

asked 2012-07-19T08:43:39.977

36

votes

3

answers

Is there any reason EnumMap and EnumSet are not Navigable

java collections enums

asked 2012-07-17T11:18:08.163

13

votes

4

answers

Do .NET design guidelines suggest returning List<T> over IEnumerable<T>?

.net collections

asked 2012-06-26T17:04:29.237

23

votes

7

answers

why there is no add method in Iterator interface

java collections iterator

asked 2012-06-25T20:07:32.150

12

votes

5

answers

How to find elements in a collection by property?

java collections apache-commons

asked 2012-06-11T12:54:49.190

8

votes

6

answers

Guava way of sorting List according to another list?

java collections guava

asked 2012-06-07T10:58:35.480

8

votes

2

answers

How does LinkedHashMap work under the hood?

java oop dictionary collections hashmap

asked 2012-06-03T12:29:01.313

25

votes

5

answers

What is the difference between Collection<?> and Collection<T>

java generics collections types unbounded-wildcard

asked 2012-05-27T22:22:54.217

12

votes

7

answers

Finding duplicate entries in Collection

java collections duplicates equality

asked 2012-05-25T13:53:05.903

45

votes

3

answers

Initialize List<> with Arrays.asList

java arrays list collections array-initialization

asked 2012-05-23T20:24:10.393

13

votes

1

answers

ArgMin for vector<double> in C++?

c++ collections stl vector

asked 2012-05-19T18:32:49.577

8

votes

6

answers

Copying List of objects by value in Java

java collections

asked 2012-05-08T09:16:19.230

Questions tagged collections