Re: What is the difference between ir and iirb?

Ruby IronRuby
1

Iirb is actually a library and has more features.

Iirb:

  • can set the prompt in a .irbrc file
  • can be nested (you can start a new irb session from within irb, even
    giving it a new target object to use as self)
  • as a library, irb can be incorporated into other projects

Irb is the REPL for MRI, it just happens that the current design of the
DLR gives a REPL pretty easily, so ir.exe is also a REPL.

JD

From: Shay F. [email protected]
Sent: October 09, 2009 1:54 AM
To: [email protected] [email protected]
Subject: [Ironruby-core] What is the difference between ir and iirb?

When no arguments are passed, they both start a REPL console only that
iirb shows the time of each operation. Are there more differences?

Thanks,
Shay.

2

IRB actually doesn’t show the time by default, it shows what “self” is,
along with the line number and nested line number. Also, ir.exe’s REPL
does not set the TOPLEVEL_BINDING constant, though running a file or a
snippet with ir.exe does:

$>ir.exe
IronRuby 0.9.1.0 on .NET 2.0.50727.4927
Copyright (c) Microsoft Corporation. All rights reserved.

TOPLEVEL_BINDING
c:\dev\vsl1s\Merlin\Main\Languages\Ruby\Libraries.LCA_RESTRICTED\Builtins\ModuleOps.cs:805:in
`const
_missing’: uninitialized constant Object::TOPLEVEL_BINDING (NameError)
from :0

$>iirb
irb(main):001:0> TOPLEVEL_BINDING
=> IronRuby.Builtins.Binding

$>ruby -e “puts TOPLEVEL_BINDING”
#Binding:0x3030acc

$>rbd -e “puts TOPLEVEL_BINDING”
IronRuby.Builtins.Binding

From: [email protected]
[mailto:[email protected]] On Behalf Of Jim D.
Sent: Friday, October 09, 2009 7:05 AM
To: [email protected]
Subject: Re: [Ironruby-core] What is the difference between ir and iirb?

Iirb is actually a library and has more features.

Iirb:

  • can set the prompt in a .irbrc file
  • can be nested (you can start a new irb session from within irb, even
    giving it a new target object to use as self)
  • as a library, irb can be incorporated into other projects

Irb is the REPL for MRI, it just happens that the current design of the
DLR gives a REPL pretty easily, so ir.exe is also a REPL.

JD

From: Shay F. [email protected]
Sent: October 09, 2009 1:54 AM
To: [email protected] [email protected]
Subject: [Ironruby-core] What is the difference between ir and iirb?
When no arguments are passed, they both start a REPL console only that
iirb shows the time of each operation. Are there more differences?

Thanks,
Shay.