To Reference A Generic Method With A Lambda Expression

Posted by SDReyes on Stack Overflow See other posts from Stack Overflow or by SDReyes
Published on 2010-05-17T15:15:00Z Indexed on 2010/05/17 15:30 UTC
Read the original article Hit count: 302

Filed under:

expression

|

expression-trees

|

c#

|

lambda

|

generics

It is possible to reference a generic method using a Lambda Expression Object?

For example, having:

TheObject:

public abstract class LambdaExpression : Expression

TheMethod (an extension method of LINQ):

public static TSource Last<TSource>( this IEnumerable<TSource> source )

I'm trying to create an instance of TheObject, that references to TheMethod.

How do you do such thing?

© Stack Overflow or respective owner

Related posts about expression

How to send keypresses from qt application to libvlc

as seen on Stack Overflow - Search for 'Stack Overflow'
I need to send keypresses from my application window to libvlc, how do i do that? I tried using varSetInteger but then i got the following error error: ‘var_SetInteger’ was not declared in this scope so i searched for the file in which var_SetInteger was defined and found that it was defined in… >>> More
Convert Javascript Regular Expression to PHP (PCRE) Expression

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi all, I am up to my neck in regular expressions, and I have this regular expression that works in javascript (and flash) that I just can't get working in PHP Here it is: var number = '(?:-?\\b(?:0|[1-9][0-9]*)(?:\\.[0-9]+)?(?:[eE][+-]?[0-9]+)?\\b)'; var oneChar = '(?:[^\\0-\\x08\\x0a-\\x1f\"\\\\]' … >>> More
Expression Tree Binary Expression for an 'In' operation

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to build an expression tree (still) but getting further! I need to create a BinaryExpression to perform an 'In' comparison between a Member and a collection of items. Hence, the expression should return true if the member is contained within the items. This obviously does not exist: Expression… >>> More
Mixing regular expression and other conditional expression in a bash if statement

as seen on Stack Overflow - Search for 'Stack Overflow'
I can't get around this for quite sometime now. As I read along manuals and tutorials I'm getting more confused. I want an if statement with the following logic: if [ -n $drupal_version ] && [[ "$drupal_version" =~ DRUPAL-[6-9]-[1-9][1-9] ]]; then but I can't get it to work properly. When… >>> More
Matching math expression with regular expression?

as seen on Stack Overflow - Search for 'Stack Overflow'
For example, these are valid math expressions: a * b + c -a * (b / 1.50) (apple + (-0.5)) * (boy - 1) And these are invalid math expressions: --a *+ b @ 1.5.0 // two consecutive signs, two consecutive operators, invalid operator, invalid number -a * b + 1) // unmatched parentheses a) * (b +… >>> More

Related posts about expression-trees

.NET Expression Trees Tutorial

as seen on Stack Overflow - Search for 'Stack Overflow'
I've been looking for a good tutorial on Expression trees (C#) for a while, but no luck so far. Most of the stuff I've found on the Web was too high level and very basic. Does anyone know some decent tutorial that goes beyond the fundamentals? >>> More
Built-in precedence in Expression Trees for math?

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm unable to find the .NET FCL built-in concept of precedence to leverage while constructing Expression Trees. Ref System.Linq.Expressions Namespace. Is this something that must be handled manually in code, or is it somehow implicit and I'm not recognizing it (e.g. maybe through helper methods or… >>> More
parsing expression trees with booleans

as seen on Stack Overflow - Search for 'Stack Overflow'
I am trying to parse an expression tree for a linq provider and running into a little snag with booleans. I can parse this no problems. var p = products.Where(x=>x.IsAvailable == true).ToList(); however when its written like this? var p = products.Where(x=>x.IsAvailable).ToList(); i only… >>> More
Built-in precedence in Expression Trees?

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm unable to find the .NET FCL built-in concept of precedence to leverage while constructing Expression Trees. Ref System.Linq.Expressions Namespace. Is this something that must be handled manually in code, or is it somehow implicit and I'm not recognizing it? Maybe through helper methods or classes… >>> More
Building Lambda Expressions from Expression Trees

as seen on Internet.com - Search for 'Internet.com'
Learn how to dynamically build and explore Lambda expressions from expression trees. >>> More