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Questions tagged [immutablearray]

11 questions
19
votes
2 answers

What is ImmutableArray in c#

I see this: This packages provides collections that are thread safe and guaranteed to never change their contents, also known as immutable collections. But i dont understand what is exactly and when we should use ImmutableArray? Edit: nowadays,…
user1968030
9
votes
1 answer

static ImmutableArray is not initialized

I have one internal static class MyLists with a static member: internal static ImmutableArray MyList = new ImmutableArray { "asd", "qwe" }; In another public test class Tests I have a MyTest function which selects and compares…
ditoslav
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3
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1 answer

System.MissingMethodException is thrown when calling a Method with ImmutableArray<> on an interface in a different dll

Problem I have the below code in the two respective dlls. dll1 depends on dll2. When DoWork() is called it will execute myInterface.MyListMethod(ImmutableList.Empty); fine. When it goes to execute…
Skyler Jokiel
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3
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0 answers

Why does using static field of type ImmutableArray in struct cause TypeLoadException

I'm attempting to use a static field of type ImmutableArray in a struct where T is the type of the struct. However, when I attempt to do this, I get an immediate TypeLoadException when I execute the program. This appears to occur before the…
Mike Cowan
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2
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2 answers

What is the difference between ImmutableArray.As and ImmutableArray.CastArray methods?

I'm trying to understand the exact difference between the 3 following methods of the ImmutableArray struct: the static method ImmutableArray.CastUp the instance method ImmutableArray.As the instance method…
Enrico Massone
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2
votes
2 answers

Mutable array of immutable length in D

Is it possible in D to have a mutable array of which the length is not known at compile time to have a static length? void testf(size_t size) { int immutable([]) testv = new int[](a); }
Jeroen
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1
vote
3 answers

Potential uses of an empty tuple in Python

I was playing around with the risks of class-level variables in Python, and I thought that the risk of lists as class-level variables can be solved with tuples, for example, an empty tuple. Take: class BaseClass(object): default_sth = [] …
jleeothon
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0
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2 answers

Append strings to array with Immutable

Having as Input a list of String (one of them could be None). How can I return a Array of String using Immutable Object. It's pretty easy if I use var or Mutable Object, here an example: def getArrayString(string: String, list1: List[String], list2:…
salvob
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0
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1 answer

Cannot assign to immutable expression of type ' AnyObject?!'

I did some search but still cannot figure out how to solve the error. Basically I am reading booklist from Json file and then update it. The reading part is fine but error ("Cannot assign to immutable expression of type ' AnyObject?!'") happens when…
Adaoli
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2 answers

How to create an immutable associative array in D

Is there a way to create an immutable associative array in D? There doesn't seem to be a way to define an associative array; only declare one. immutable char[][char[]] = ["testk" = "testv", "testk2" = "testv2"];
Jeroen
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-4
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1 answer

Pros and cons of creating immutable empty array in swift

I am new to Swift Programming language. I am learning it from Apple's site. I came across below line of code: let emptyArray = [String]() I have asked another question related to this but not completely. I want to know that what are the pros and…
Priyank Sheth
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