c# Programming Glossary: oftype

Why is OfType<> faster than Cast<>? [closed]

http://stackoverflow.com/questions/11430570/why-is-oftype-faster-than-cast

is OfType faster than Cast closed In answer to the following question.. expressions var arr Regex.Matches strText @ b A Za z ' b .OfType Match OfType .Select m m.Groups 0 .Value .ToArray and var arr.. var arr Regex.Matches strText @ b A Za z ' b .OfType Match OfType .Select m m.Groups 0 .Value .ToArray and var arr Regex.Matches..

How to have userfriendly names for enumerations? [duplicate]

http://stackoverflow.com/questions/1331487/how-to-have-userfriendly-names-for-enumerations

Value myDDL.DataSource Enum.GetValues typeof MyEnum .OfType MyEnum .Select val new Description val.GetDescription Value.. gets us a loosely typed Array of the values Next we call OfType MyEnum which converts the array to an IEnumerable MyEnum Then..

Performance surprise with “as” and nullable types

http://stackoverflow.com/questions/1583050/performance-surprise-with-as-and-nullable-types

values Stopwatch sw Stopwatch.StartNew int sum values.OfType int .Sum sw.Stop Console.WriteLine LINQ 0 1 sum long sw.ElapsedMilliseconds.. hundreds of machine code instructions is likely. The Linq OfType extension method also uses the is operator and the cast. This..

Generic All Controls Method

http://stackoverflow.com/questions/17454389/generic-all-controls-method

.Where c c is T which works fine except I need to add OfType T when calling it to get access to its properties. e.g this.. to its properties. e.g this form this.GetAll IMyInterface .OfType IMyInterface I'm struggling to make the return type into a generic.. type IEnumerable T so that I don't have to include a OfType which will just return the same result but cast correctly. Anyone..

Preserving order with LINQ

http://stackoverflow.com/questions/204505/preserving-order-with-linq

Elements are filtered but not re ordered. Except Intersect OfType Skip SkipWhile Take TakeWhile Where Zip new in .net 4 Destroys..

arraylist vs List<> in c#

http://stackoverflow.com/questions/2309694/arraylist-vs-list-in-c-sharp

can be used easily in LINQ without requiring any Cast or OfType call . ArrayList belongs to the days that C# didn't have generics...

Operation could destabilize the runtime?

http://stackoverflow.com/questions/378895/operation-could-destabilize-the-runtime

Assign various members here as ISomeTable return results.OfType ISomeObject This works but I'm having trouble understanding.. return you will be able to handle . In the second example OfType is ensuring that what gets returned is an object that stores..

ArrayList vs List<object>

http://stackoverflow.com/questions/391088/arraylist-vs-listobject

but not with ArrayList unless you inject a Cast object OfType object thanks to IEnumerable object vs IEnumerable . That's..

When to use Cast() and Oftype() in Linq

http://stackoverflow.com/questions/4015930/when-to-use-cast-and-oftype-in-linq

use them e.g IEnumerable string someCollection arrayList.OfType string or IEnumerable string someCollection arrayList.Cast string.. each case c# .net linq share improve this question OfType return only the elements of type x. Cast will try to cast all..

Casting List<T> - covariance/contravariance problem

http://stackoverflow.com/questions/4931789/casting-listt-covariance-contravariance-problem

x return x In .NET 3.5 you could use LINQ with Cast OfType or even just Select var converted original.Cast IMyClass .ToList.. original.Cast IMyClass .ToList var converted original.OfType IMyClass .ToList var converted original.Select x IMyClass x..

Problem with Eager Loading Nested Navigation Based on Abstract Entity (EF CTP5)

http://stackoverflow.com/questions/5189268/problem-with-eager-loading-nested-navigation-based-on-abstract-entity-ef-ctp5

and the comments like this var discussions ctx.Posts .OfType Discussion .Include x x.Comments .ToList But i can't seem.. ctx .Locations .Include x x.Posts .OfType Discussion .Select y y.Comments .SingleOrDefault Which compiles.. ctx .Posts .Include x x.Location .OfType Discussion .Include x x.Comments .Where x x.LocationId 1234..

Foreach can throw an InvalidCastException?

http://stackoverflow.com/questions/949798/foreach-can-throw-an-invalidcastexception

and extension methods to start with so we could use OfType and Cast that foreach wouldn't be specified in quite the same..