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Recent questions tagged collections
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collections - How do you replace the value of a mutable variable by taking ownership of it?
I am working with a LinkedList and I want to remove all elements which do not pass a test. However, I am running ... way to std::mem::replace. See Question&Answers more detail:os...
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collections - Java Sorting object in ArrayList
Hi I have Card class... In another class I create an arrayList of Card objects. How would I go about sorting the ... false; } return true; } } See Question&Answers more detail:os...
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collections - Java: Printing LinkedList without square brackets?
This is a fairly simple question. When you print out a LinkedList, like so: System.out.println(list); It ... out without the square brackets? See Question&Answers more detail:os...
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collections - What is the main difference between Hashset, Treeset and LinkedHashset, Hashmap and how does it work in Java?
I just understand that LinkedHashSet does not allows duplicate elements when it is inserting. But, I dont ... better performance in Java? See Question&Answers more detail:os...
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collections - Component to iterate and render a nested tree-like object structure in JSF
Given the class definition below: public class Comment { String username; String comment; List<Comment> replies; // ... - UserOne said blah blah See Question&Answers more detail:os...
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collections - Implement both Map and List interface in Java?
I'd like to have an object that implements both the Map and the List interfaces in Java. The idea is similar ... 't select entries by index.) See Question&Answers more detail:os...
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collections - Swift: How to declare a 2d array (grid or matrix) in Swift to allow random insert
I need to be able to store information about cells in a 2d matrix or grid. Data is not contiguous so I may ... nulls. Is there a better way? See Question&Answers more detail:os...
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collections - Is there a fast concat method for linked list in Java?
How can I concat two linked lists in O(1) with Java via jdk1.6, google or apache commons collection or whatever ... ? how to concat the inverse? See Question&Answers more detail:os...
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collections - How to check if a tuple contains an element in Python?
I tried to find the available methods but couldn't find it. There is no contains. Should I use index? I just ... don't need the index of it. See Question&Answers more detail:os...
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collections - Meteor using a local connection results in error: insert failed: 404 -- Method not found
I've got a meteor collection on the client side Friends = new Meteor.Collection("Friends"); Meteor.subscribe(" ... What have I missed? Anyone? See Question&Answers more detail:os...
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collections - Is there a Directed Acyclic Graph (DAG) data type in Java, and should I use it?
I am modeling a power subsystem in Java. A simple SQLite database contains a set of Line Replaceable Units ( ... is appropriate for my scenario? See Question&Answers more detail:os...
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collections - mutable fields for objects in a Java Set
Am I correct in assuming that if you have an object that is contained inside a Java Set<> (or as a key ... I understood the implications of it. See Question&Answers more detail:os...
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collections - Which HTTP code to use for an empty subresource in a REST API?
Let's say I've a resource articles at /articles. These articles may have related articles, so I fetch them by ... set, should It be a 404? See Question&Answers more detail:os...
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collections - How to add element in List while iterating in java?
Say I have a List like: List<String> list = new ArrayList<>(); list.add("a"); list.add("h"); list.add ... anybody suggest me how can I do this? See Question&Answers more detail:os...
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collections - Regarding HashMap implementation in java
I was trying to do research on hashmap and came up with the following analysis: https://stackoverflow.com/questions/ ... the other image is ... See Question&Answers more detail:os...
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collections - How to add element in List while iterating in java?
Say I have a List like: List<String> list = new ArrayList<>(); list.add("a"); list.add("h"); list.add ... anybody suggest me how can I do this? See Question&Answers more detail:os...
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collections - Regarding HashMap implementation in java
I was trying to do research on hashmap and came up with the following analysis: https://stackoverflow.com/questions/ ... the other image is ... See Question&Answers more detail:os...
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collections - Give me a practical use-case of Multi-set
I would like to know a few practical use-cases (if they are not related/tied to any programming language it ... way to answer this question". See Question&Answers more detail:os...
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collections - How to customize the data-prototype attribute in Symfony 2 forms
Since umpteens days, I block on a problem with Symfony 2 and forms. I got a form of websites entities. "Websites ... an idea to make that hack ? See Question&Answers more detail:os...
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collections - How to create Immutable List in java?
I need to convert mutable list object to immutable list. What is the possible way in java? public void action() { List ... ; this.age = age; } } See Question&Answers more detail:os...
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collections - How can I convert Scala Map to Java Map with scala.Float to java.Float k/v conversion
I would like to be able to perform the following, but it fails in the call to useMap. How can I perform this ... , but not Map[Int, Float]. See Question&Answers more detail:os...
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collections - Python "set" with duplicate/repeated elements
Is there a standard way to represent a "set" that can contain duplicate elements. As I understand it, a set ... to me to be more appropriate. See Question&Answers more detail:os...
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collections - How to implement a list fold in Java
I have a List and want to reduce it to a single value (functional programming term "fold", Ruby term inject), ... { append ... } sb.toString See Question&Answers more detail:os...
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collections - Helper to remove null references in a Java List?
Given the following List: List<String> list = new ArrayList<String>(); list.add("s1"); list.add("s2"); ... I use to fulfill this requirement? See Question&Answers more detail:os...
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collections - C# Iterate through NameValueCollection
I have a NameValueCollection, and want to iterate through the values. Currently, I'm doing this, but it seems ... Console.ReadLine(); Is there? See Question&Answers more detail:os...
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collections - Why does Python not support record type? (i.e. mutable namedtuple)
Why does Python not support a record type natively? It's a matter of having a mutable version of namedtuple. I ... my device), but are mutable. See Question&Answers more detail:os...
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collections - Java: Why are wrapper classes needed?
On the very high level, I know that we need to "wrap" the primitive data types, such as int and char, by ... thank you in advance for your help. See Question&Answers more detail:os...
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collections - Number of elements in a javascript object
Is there a way to get (from somewhere) the number of elements in a javascript object?? (i.e. constant-time ... : var obj = new Object ; See Question&Answers more detail:os...
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