Ironruby core - Nov 2009 - 2d array

I have some C# code which is expecting a 2d array.

public static class Foo
{
    public static int Bar(object[,] inArray)
    { ... }
}

Is there any way that I can call this from IronRuby? I can''t figure out
how
to create the 2d array?

I have a feeling this has been asked before, but I can''t find any info
about
it...

Cheers, Orion
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You can create an array using the BCL by calling Array.CreateInstance. From C#,
it would look like this:

Array.CreateInstance(typeof(object), 5, 6)); // Equivalent to new object[5,6]

I don''t have IronRuby on this machine and don''t want to guess
at the right syntax.

From: ironruby-core-bounces at rubyforge.org [mailto:ironruby-core-bounces at
rubyforge.org] On Behalf Of Orion Edwards
Sent: Sunday, November 29, 2009 4:41 PM
To: ironruby-core at rubyforge.org
Subject: [Ironruby-core] 2d array

I have some C# code which is expecting a 2d array.

public static class Foo
{
    public static int Bar(object[,] inArray)
    { ... }
}

Is there any way that I can call this from IronRuby? I can''t figure out
how to create the 2d array?

I have a feeling this has been asked before, but I can''t find any info
about it...

Cheers, Orion
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This worked for me:

System::Array.CreateInstance(System::Object.to_clr_type, 5, 6)

Getting and setting works using x[1,2] as you''d expect

Cheers!

On Mon, Nov 30, 2009 at 1:44 PM, Curt Hagenlocher <curth at
microsoft.com>wrote:
>  You can create an array using the BCL by calling Array.CreateInstance.
> >From C#, it would look like this:
>
>
>
> Array.CreateInstance(typeof(object), 5, 6)); // Equivalent to new
> object[5,6]
>
>
>
> I don''t have IronRuby on this machine and don''t want to
guess at the right
> syntax.
>
>
>
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... And here''s a convenient helper

class Array
  def to_2d_a(ruby_type)
    sub_count = self.length
    max_sub_len = self.map{ |a| a.length }.max

    ar = System::Array.CreateInstance(ruby_type.to_clr_type, sub_count,
max_sub_len)

    self.each_with_index do |sub, idx|
      sub.each_with_index do |item, sub_idx|
        ar[idx, sub_idx] = item
      end
    end

    ar
  end

used like this

[[1,2],[3,4,5],[6,7]].to_2d_a(System::Int32)

:-)

On Mon, Nov 30, 2009 at 1:44 PM, Curt Hagenlocher <curth at
microsoft.com>wrote:
>
>>  You can create an array using the BCL by calling Array.CreateInstance.
>> >From C#, it would look like this:
>>
>>
>>
>> Array.CreateInstance(typeof(object), 5, 6)); // Equivalent to new
>> object[5,6]
>>
>>
>>
>> I don''t have IronRuby on this machine and don''t want
to guess at the right
>> syntax.
>>
>>
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