Linked Questions

Possible Duplicate: Is it better to call ToList() or ToArray() in LINQ queries? I have code like this: void Foobar(string[] arr, Dictionary<string, string[]>) { var t = arr.Intersect(dic....

Background: I admit I did not attempt to benchmark this, but I'm curious... What are the CPU/memory characteristics of the Enumerable.ToArray<T> (and its cousin Enumerable.ToList<T>)? ...

Possible Duplicate: Is it better to call ToList() or ToArray() in LINQ queries? Hi, I have following code static void Main(string[] args) { const string FileName = @"c:\words"...

As a new .NET 3.5 programmer, I started to learn LINQ and I found something pretty basic that I haven't noticed before: The book claims every array implements IEnumerable<T> (obviously, ...

Consider this code: var query = db.Table .Where(t => SomeCondition(t)) .AsEnumerable(); int recordCount = query.Count(); int totalSomeNumber = query.Sum(); decimal ...

So I've got a collection of structs (it's actually a WCF datacontract but I'm presuming this has no bearing here). List<OptionalExtra> OptionalExtras; OptionalExtra is a struct. public partial ...

Can someone tell me which one is more efficient between List<int> and int[]. Because I am working on a project and as you might know efficiency is way so important concern now. If you added ...

I'm using .Net 3.5 (C#) and I've heard the performance of C# List<T>.ToArray is "bad", since it memory copies for all elements to form a new array. Is that true?

This is easy for me to perform in TSQL, but I'm just sitting here banging my head against the desk trying to get it to work in EF4! I have a table, lets call it TestData. It has fields, say: ...

I have two collections of strings: CollectionA is a StringCollection property of an object stored in the system, while CollectionB is a List generated at runtime. CollectionA needs to be updated to ...

In .NET<5 and .NET Core 3.1 the following code var d = new Dictionary<string, int> { { "a", 0 }, { "b", 0 }, { "c", 0 } }; foreach (var k in d.Keys) { d[k]+=...

I have 2 int arrays. int[] data1 # int[] data2 # I want to create a 3rd int[] data3 which is the differences between the 2 other arrays. Let us take the 1st value in data1. The value is 15 (e.g.). ...

Since you need to input the length of an array at the time of creation, I assume that it requires a solid, continuous block of memory. A List can be dynamically expanded, so does this mean that it ...

I'm constructing a simple search function for a site. The aim is to allow the user to find 'swimmers' and add them to a list via a search box, using a query like "bob staff". The first part of this I ...

I am new with linq, I need to split an IEnumerable of a type Couple(string text, bool indicator) to multiple IEnumerables based on the indicator, I tried with skipWhile and TakeWhile but I didn't find ...