<s>
IronRuby	B-Language
is	O
an	O
implementation	O
of	O
the	O
Ruby	B-Language
programming	I-Language
language	I-Language
targeting	O
Microsoft	B-Application
.NET	I-Application
Framework	I-Application
.	O
</s>
<s>
It	O
is	O
implemented	O
on	O
top	O
of	O
the	O
Dynamic	B-Application
Language	I-Application
Runtime	I-Application
(	O
DLR	O
)	O
,	O
a	O
library	O
running	O
on	O
top	O
of	O
the	O
Common	O
Language	O
Infrastructure	O
that	O
provides	O
dynamic	O
typing	O
and	O
dynamic	O
method	O
dispatch	O
,	O
among	O
other	O
things	O
,	O
for	O
dynamic	O
languages	O
.	O
</s>
<s>
The	O
project	O
is	O
currently	O
inactive	O
,	O
with	O
the	O
last	O
release	O
of	O
IronRuby	B-Language
(	O
version	O
1.1.3	O
)	O
being	O
in	O
March	O
2011	O
.	O
</s>
<s>
On	O
April	O
30	O
,	O
2007	O
,	O
at	O
MIX	O
2007	O
,	O
Microsoft	O
announced	O
IronRuby	B-Language
,	O
which	O
uses	O
the	O
same	O
name	O
as	O
Wilco	O
Bauwer	O
's	O
IronRuby	B-Language
project	O
with	O
permission	O
.	O
</s>
<s>
On	O
July	O
23	O
,	O
2007	O
,	O
as	O
promised	O
,	O
John	O
Lam	O
and	O
the	O
DLR	O
Design	O
Team	O
presented	O
the	O
pre-Alpha	O
version	O
of	O
the	O
IronRuby	B-Language
compiler	O
at	O
OSCON	O
.	O
</s>
<s>
He	O
also	O
announced	O
a	O
quick	O
timeline	O
for	O
further	O
integration	O
of	O
IronRuby	B-Language
into	O
the	O
open	O
source	O
community	O
.	O
</s>
<s>
The	O
source	O
code	O
has	O
continued	O
to	O
be	O
updated	O
regularly	O
by	O
the	O
core	O
Microsoft	O
team	O
(	O
but	O
not	O
for	O
every	O
check-in	B-Architecture
)	O
.	O
</s>
<s>
The	O
team	O
also	O
does	O
not	O
accept	O
community	O
contributions	O
for	O
the	O
core	O
Dynamic	B-Application
Language	I-Application
Runtime	I-Application
library	O
,	O
at	O
least	O
for	O
now	O
.	O
</s>
<s>
On	O
July	O
24	O
,	O
2008	O
,	O
the	O
IronRuby	B-Language
team	O
released	O
the	O
first	O
binary	O
alpha	O
version	O
,	O
in	O
line	O
with	O
OSCON	O
2008	O
.	O
</s>
<s>
The	O
team	O
actively	O
worked	O
to	O
support	O
Rails	B-Application
on	O
IronRuby	B-Language
.	O
</s>
<s>
Some	O
Rails	B-Application
functional	O
tests	O
started	O
to	O
run	O
,	O
but	O
a	O
lot	O
of	O
work	O
still	O
needed	O
to	O
be	O
done	O
to	O
be	O
able	O
to	O
run	O
Rails	B-Application
in	O
a	O
production	O
environment	O
.	O
</s>
<s>
With	O
this	O
version	O
,	O
IronRuby	B-Language
could	O
run	O
some	O
Rails	B-Application
applications	O
,	O
but	O
still	O
not	O
on	O
a	O
production	O
environment	O
.	O
</s>
<s>
The	O
preferred	O
one	O
,	O
which	O
runs	O
on	O
top	O
of	O
.NET	B-Application
4.0	O
.	O
</s>
<s>
A	O
version	O
with	O
more	O
limited	O
features	O
,	O
which	O
ran	O
on	O
top	O
of	O
.NET	B-Application
2.0	O
.	O
</s>
<s>
This	O
version	O
was	O
the	O
only	O
one	O
compatible	O
with	O
Mono	B-Application
.	O
</s>
<s>
The	O
IronRuby	B-Language
team	O
planned	O
to	O
support	O
Ruby	B-Language
1.8.6	O
only	O
for	O
1.0	O
point	O
releases	O
,	O
and	O
1.9	O
version	O
only	O
for	O
upcoming	O
1.x	O
releases	O
,	O
skipping	O
support	O
for	O
Ruby	B-Language
1.8.7	O
.	O
</s>
<s>
In	O
July	O
2010	O
,	O
Microsoft	O
let	O
go	O
,	O
one	O
of	O
two	O
remaining	O
members	O
of	O
the	O
IronRuby	B-Language
core	O
team	O
,	O
and	O
stopped	O
funding	O
the	O
project	O
.	O
</s>
<s>
In	O
October	O
2010	O
Microsoft	O
announced	O
the	O
Iron	O
projects	O
(	O
IronRuby	B-Language
and	O
IronPython	B-Application
)	O
were	O
being	O
changed	O
to	O
"	O
external	O
"	O
projects	O
and	O
enabling	O
"	O
community	O
members	O
to	O
make	O
contributions	O
without	O
Microsoft	O
's	O
involvement	O
or	O
sponsorship	O
by	O
a	O
Microsoft	O
employee	O
"	O
.	O
</s>
<s>
The	O
last	O
published	O
release	O
of	O
IronRuby	B-Language
was	O
on	O
13	O
March	O
2011	O
as	O
version	O
1.1.3	O
.	O
</s>
<s>
IronRuby	B-Language
may	O
run	O
as	O
well	O
on	O
Mono	B-Application
as	O
it	O
does	O
on	O
Microsoft	O
Common	O
Language	O
Runtime	O
(	O
CLR	O
)	O
,	O
but	O
as	O
the	O
IronRuby	B-Language
team	O
only	O
tests	O
it	O
with	O
the	O
CLR	O
on	O
Windows.	O
,	O
it	O
may	O
not	O
build	O
on	O
Mono	B-Application
depending	O
on	O
the	O
build	O
.	O
</s>
<s>
The	O
interoperability	O
between	O
IronRuby	B-Language
classes	O
and	O
regular	O
.NET	B-Application
Framework	I-Application
classes	O
is	O
very	O
limited	O
because	O
many	O
Ruby	B-Language
classes	O
are	O
not	O
.NET	B-Application
classes	O
.	O
</s>
<s>
However	O
,	O
better	O
support	O
for	O
dynamic	O
languages	O
in	O
.NET	B-Application
4.0	O
may	O
increase	O
interoperability	O
in	O
the	O
future	O
.	O
</s>
<s>
IronRuby	B-Language
was	O
supported	O
on	O
Silverlight	B-Application
.	O
</s>
<s>
It	O
could	O
be	O
used	O
as	O
a	O
scripting	O
engine	O
in	O
the	O
browser	O
just	O
like	O
the	O
JavaScript	B-Language
engine	O
.	O
</s>
<s>
IronRuby	B-Language
scripts	O
were	O
passed	O
like	O
simple	O
client-side	O
JavaScript-scripts	O
in	O
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx1-tags	O
.	O
</s>
<s>
It	O
is	O
then	O
also	O
possible	O
to	O
modify	O
embedded	O
XAML	B-Device
markup	O
.	O
</s>
<s>
The	O
same	O
worked	O
for	O
IronPython	B-Application
.	O
</s>
<s>
IronRuby	B-Language
integrated	O
RubySpec	B-Language
,	O
which	O
is	O
a	O
project	O
to	O
write	O
a	O
complete	O
,	O
executable	O
specification	O
for	O
the	O
Ruby	B-Language
programming	I-Language
language	I-Language
.	O
</s>
<s>
The	O
IronRuby	B-Language
Git	O
repo	O
includes	O
a	O
copy	O
of	O
the	O
RubySpec	B-Language
tests	O
,	O
including	O
the	O
MSpec	O
test	O
framework	O
.	O
</s>
<s>
IronRuby	B-Language
was	O
previously	O
released	O
under	O
the	O
Microsoft	O
Public	O
License	O
,	O
which	O
is	O
OSI-certified	O
BSD-style	B-Operating_System
license	I-Operating_System
.	O
</s>
<s>
On	O
16	O
July	O
2010	O
,	O
Microsoft	O
re-licensed	O
IronRuby	B-Language
along	O
with	O
the	O
DLR	O
under	O
the	O
Apache	B-Application
License	I-Application
2.0	I-Application
.	O
</s>
