[AccessD] Friday fun: Lambda Expressions

  I must be missing something as I don't see what the big deal is.  I
watched some of the video's on the Beta 2 release and Lambda expressions
seemed to be a significant point.  To me, it seems they've been added simply
to get something else to work (linq).

  After going through many of the links provided (thanks), I also don't see
any great advantage to supply a function in-line.  While it does make code
more compact, I think it also clouds somewhat what is really going on.
There is the potential for more errors as well.

  For example, with the example that Ken Getz gave, if I had one place where
I needed a check for IsSmall for a file based on 50 bytes and in another
based on 100 bytes, with the new way my file check code would be in two
different places in the app.

  With the old method, I would do:

 Function IsSmall(lngUpperLimit as long) as integer

  and just have a generic function to handle any requirement for checking if
a file is too small.

  To me it seems their use would be limited to things like simple math
expressions or checks.

Jim.  

-----Original Message-----
From: accessd-bounces at databaseadvisors.com
[mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Gustav Brock
Sent: Monday, September 24, 2007 6:20 AM
To: accessd at databaseadvisors.com
Subject: Re: [AccessD] Friday fun: Lambda Expressions

Hi Shamil

Thanks! Exactly what I was looking for.
Those links will keep me busy for a while ...

/gustav

>>> shamil at users.mns.ru 21-09-2007 23:09 >>>
Hello Gustav,

 

Below is the set of good IMO URLs to LINQ and lambda expressions info,
discussions and samples (watch URL's line wraps). Statt with the first one,
which gives really practical sample:

 

http://www.code-magazine.com/Article.aspx?quickid=0709101 

http://community.bartdesmet.net/blogs/bart/archive/2007/09/05/visual-basic-9

-0-feature-focus-linq-queries.aspx 

http://community.bartdesmet.net/blogs/bart/archive/2007/08/28/visual-basic-9

-0-feature-focus-expression-trees.aspx 

http://blogs.msdn.com/ericwhite/pages/Lambda-Expressions.aspx 

http://blogs.msdn.com/ericwhite/pages/FP-Tutorial.aspx 

http://blogs.msdn.com/kevin_halverson/archive/2007/07/10/how-to-implement-iq

ueryable.aspx 

 

http://msdn2.microsoft.com/en-us/vbasic/bb688088.aspx 

http://msdn2.microsoft.com/en-us/vbasic/bb330936.aspx 

http://msdn2.microsoft.com/ru-ru/netframework/aa904594.aspx 

 

--

Shamil

 

-----Original Message-----
From: accessd-bounces at databaseadvisors.com 
[mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Gustav Brock
Sent: Friday, September 21, 2007 4:50 PM
To: accessd at databaseadvisors.com 
Subject: [AccessD] Friday fun: Lambda Expressions

 

Hi all

 

I think I understand this clever topic:

 

http://msdn.microsoft.com/msdnmag/issues/07/09/BasicInstincts/ 

 

but I just can't find a good example where it would be useful.

Anyone having a good idea?

 

/gustav



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