[Ironruby-core] Linq syntax?

Tomas Matousek Tomas.Matousek at microsoft.com
Tue Apr 7 14:50:12 EDT 2009


Method of Queryable take expression trees. Ruby lambdas are not convertible to expression trees.
You need to build the expression tree yourself.

Tomas

From: ironruby-core-bounces at rubyforge.org [mailto:ironruby-core-bounces at rubyforge.org] On Behalf Of Ivan Porto Carrero
Sent: Tuesday, April 07, 2009 11:06 AM
To: ironruby-core
Subject: [Ironruby-core] Linq syntax?

Hi

What would be the syntax to call Linq methods?

for example:
I have an IQueryable<Users> and I want to get the equivalent out of

from user in MyRepository.Users
where user.name<http://user.name> == "somename"

That of course is only one example, I want to do a lot more :)

My best guess is that I would have to do something like this only it doesn't work

System::Linq::Queryable.where(MyRepository.Users, lambda { |user| user.name<http://user.name> == "somename" })

yields wrong number of arguments (2 for 2147483647)

So what is the correct way?
---
Met vriendelijke groeten - Best regards - Salutations
Ivan Porto Carrero
Blog: http://flanders.co.nz
Twitter: http://twitter.com/casualjim
Author of IronRuby in Action (http://manning.com/carrero)
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