Immutable Collections is a library containing immutable data structures created by Microsoft for .NET.
Immutable Collections is a library containing immutable data structures created by Microsoft for .NET.
Questions tagged [immutable-collections]
93 questions
1
vote
1 answer
Most idiomatic way to iterate through and add to set functionally
I'm using Gremlin to iterate through a GraphTraversal object and retrieve the vertices.
Here's what I'm working with:
def getVertexSet(vIter: GraphTraversal[Vertex, Vertex]): Set[Vertex] = {
val s = mutable.HashSet.empty[Vertex]
…
franklin
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2 answers
How to orchestrate mutable object as immutable across objects
I have a java class something like this
class Runner {
public Object run(Map input);
public String name();
}
public class Test {
public static void main(String args[]) {
Map map = Maps.newHashMap();
…
kane.zorfy
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0 answers
What is the Best C# Sortable Serialized List that can be used with DataContract?
As a part of a class, I have some Immutable POCO objects just to act as a Data Transfer Object for a configuration file.
[DataMember]
public IReadOnlyList Messages { get; } = new List()
{
new Warning(75, "UserMessage1",…
Ryan Leach
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0 answers
Is java read only ByteBuffer a right object to have immutable byte array?
I need to have immutable array of bytes that will be used in multithreaded environment. I came across ByteBuffer class, it's possible to make as read only with .asReadOnlyBuffer method.
However I'm wondering is that a right immutable bytes…
erkfel
- 1,588
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2 answers
How to replace value in map for a key based on a condition in scala
I have several immutable map records like :
val map = Map("number"->7,"name"->"Jane","city"->"New York")
I need to identify the "name" key for each record and check its value.If value is "Jane" , I need to replace with "Doe" and update the map…
b1399877
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- 2
- 6
1
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2 answers
Immutables and collections in JavaScript
I'm trying to get my head around how to use Immutables in JavaScript/TypeScript without taking all day about it. I'm not quite ready to take the dive into Immutable.js, because it seems to leave you high and dry as far as type safety.
So let's take…
Amy Blankenship
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1 answer
Redux/ImmutableJS Nested States + Big-o Complexity of Immutable Collections
I'm trying to get my head around Immutability for my first Redux (NGRX/Store) project. Avoiding state mutation has proved extremely painful, and after battling with Object.assign({}) and state mutation errors, I've discovered Immutable.JS. Which…
reach4thelasers
- 26,181
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1 answer
Immutable Tree Map for Java?
I am looking for an implementation of an immutable Tree Map in Java, that allows for copy-on-write style modifications with sharing of identical parts. So, in essence exactly what ImmutableJS does for JavaScript, just for Java.
If anyone happens to…
Martin Häusler
- 6,544
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0 answers
System.Collections.Immutable reference to System.Runtime and FxCop/metrics
On Windows 7 with .NET 4.5.2 installed, I create a new ClassLibrary project targetting .NET 4.5.2.
I want to calculate the code metrics for that assembly by launching the metrics.exe that is shipped with FxCop with Visual Studio 2013 located in…
Vincent Ripoll
- 156
- 9
0
votes
1 answer
java.lang.NoSuchMethodError: com.google.common.collect.ImmutableSet.builder()Lcom/google/common/collect/ImmutableSet$Builder
I'm getting this error continuously
Failed to execute goal deploy: {"WFLYCTL0062: Composite operation failed and was rolled back. Steps that failed:" => {"Operation step-1" => {"WFLYCTL0080: Failed services" =>…
Linidu Praneeth Gunathilaka
- 147
- 10
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0 answers
How do we get immutable version of HashSet, List, and other stuffs
For example,
I have hashSet like this
Protected ReadOnly Property idsOfExistingOrder As HashSet(Of String)
It's ReadOnly
However, the ReadOnliness of that variable simple means that outsider cannot change the HashSet. It can still say add element…
user4951
- 32,206
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0
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1 answer
implementing immutable stack in python
Have a question about creating new objects using existing objects in python. Example: I want to implement immutable Stack using python. However, catch here is, whenever I am creating new object, it should be created from existing object:
in below…
Todd
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- 1
0
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1 answer
Immutable vs Concurrent Collections
In the thread When immutable collections are preferable then concurrent it is stated that immutable collections may be slower but they save memory. How is it possible if every change of immutable collection results in creating new object?
I…
helpME1986
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1 answer
Why do we pass a reference of collection (or any object) when intializing itself? Please check the code below
Please check line 5 of the code below. And also please correct my question if it's wrong.
public class Location {
private final Map exits;
public Location(Map exits) {
if(exits != null)…
Pankaj Verma
- 9
- 3
0
votes
1 answer
Is it possible to use immutable collections in this case?
I have translated a code from python to F# but I wished to use a more idiomatic syntax.
I think that there are two big obstacles
poor performance (consider that n is very big)
not powerful enough abstractions
The current (working) code I have is…
user11323942