# Destroy object from memory.. Object.const\_destroy? **URL:** \ **Category:** ruby-talk\ **Created:** [4 July 2007 18:56 UTC](https://rubytalk.org/t/destroy-object-from-memory-object-const-destroy/38849 "2007-07-04T18:56:01Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Aaron\_Smith](https://avatars.discourse-cdn.com/v4/letter/a/df788c/32.png) [@Aaron\_Smith](https://rubytalk.org/u/Aaron_Smith)\ **Post date:** [4 July 2007 18:56 UTC](https://rubytalk.org/t/destroy-object-from-memory-object-const-destroy/38849/1 "2007-07-04T18:56:01Z")
Hey all, If I'm instantiating a instance of a class at using Object.const\_get. How can I destroy it so that next time it reloads and code changes will take effect? Thanks. > **···** > > -- > Posted via [http://www.ruby-forum.com/](http://www.ruby-forum.com/). ---
**Author:** ![Yukihiro\_Matsumoto2](https://avatars.discourse-cdn.com/v4/letter/y/b9e5f3/32.png) [@Yukihiro\_Matsumoto2](https://rubytalk.org/u/Yukihiro_Matsumoto2)\ **Post date:** [5 July 2007 14:32 UTC](https://rubytalk.org/t/destroy-object-from-memory-object-const-destroy/38849/2 "2007-07-05T14:32:28Z")
Hi, > If I'm instantiating a instance of a class at using Object.const\_get. > How can I destroy it so that next time it reloads and code changes will > take effect? I am not sure what you mean here. You don't instantiate anything using const\_get. You just get the reference to the existing object. If you want to redefine class objects (without warning), you remove the constant using remove\_const(), and reload the program using load(). But I'd recommend restarting the program, unless reloading is absolutely necessary.               matz. > **···** > > In message "Re: Destroy object from memory.. Object.const\_destroy?" on Thu, 5 Jul 2007 03:56:01 +0900, Aaron Smith \ writes: ---
**Author:** ![Aaron\_Smith](https://avatars.discourse-cdn.com/v4/letter/a/df788c/32.png) [@Aaron\_Smith](https://rubytalk.org/u/Aaron_Smith)\ **Post date:** [5 July 2007 14:40 UTC](https://rubytalk.org/t/destroy-object-from-memory-object-const-destroy/38849/3 "2007-07-05T14:40:25Z")
Yukihiro Matsumoto wrote: > Hi, > > \>If I'm instantiating a instance of a class at using Object.const\_get. > \>How can I destroy it so that next time it reloads and code changes will > \>take effect? > > I am not sure what you mean here. You don't instantiate anything > using const\_get. You just get the reference to the existing object. > If you want to redefine class objects (without warning), you remove > the constant using remove\_const(), and reload the program using > load(). But I'd recommend restarting the program, unless reloading is > absolutely necessary. > >               matz. Thanks, That's pretty much what I was looking for. The problem I'm having is with a plugin in Rails. Once it runs, if code is executed, then changed at all, I have to restart Rails. Default rails controllers update just fine. They're probably using the remove\_const(). But with my plugin I want to have the same functionality... Are there any major risks doing this? Wouldn't seem like it. Thanks > **···** > > > In message "Re: Destroy object from memory.. Object.const\_destroy?" \> on Thu, 5 Jul 2007 03:56:01 +0900, Aaron Smith \> \ writes: > > -- > Posted via [http://www.ruby-forum.com/\](http://www.ruby-forum.com/%5C). ---
**Author:** ![James\_Edward\_Gray\_II](https://avatars.discourse-cdn.com/v4/letter/j/ea5d25/32.png) [@James\_Edward\_Gray\_II](https://rubytalk.org/u/James_Edward_Gray_II)\ **Post date:** [5 July 2007 14:51 UTC](https://rubytalk.org/t/destroy-object-from-memory-object-const-destroy/38849/4 "2007-07-05T14:51:14Z")
Are you talking about the way Rails reloads classes in development mode? You can enable this in your own classes using:    class MyClass      include Reloadable    end James Edward Gray II > **···** > > On Jul 5, 2007, at 9:40 AM, Aaron Smith wrote: > > > Yukihiro Matsumoto wrote: > > > > > Hi, > > > > > > In message "Re: Destroy object from memory.. Object.const\_destroy?" \>\> on Thu, 5 Jul 2007 03:56:01 +0900, Aaron Smith \>\> \ writes: > > > > > > \>If I'm instantiating a instance of a class at using Object.const\_get. > > > \>How can I destroy it so that next time it reloads and code changes will > > > \>take effect? > > > > > > I am not sure what you mean here. You don't instantiate anything > > > using const\_get. You just get the reference to the existing object. > > > If you want to redefine class objects (without warning), you remove > > > the constant using remove\_const(), and reload the program using > > > load(). But I'd recommend restarting the program, unless reloading is > > > absolutely necessary. > > > > > >               matz. > > > > Thanks, > > > > That's pretty much what I was looking for. The problem I'm having is > > with a plugin in Rails. Once it runs, if code is executed, then changed > > at all, I have to restart Rails. Default rails controllers update just > > fine. They're probably using the remove\_const(). But with my plugin I > > want to have the same functionality... ---
**Author:** ![Aaron\_Smith](https://avatars.discourse-cdn.com/v4/letter/a/df788c/32.png) [@Aaron\_Smith](https://rubytalk.org/u/Aaron_Smith)\ **Post date:** [5 July 2007 15:03 UTC](https://rubytalk.org/t/destroy-object-from-memory-object-const-destroy/38849/5 "2007-07-05T15:03:08Z")
> > That's pretty much what I was looking for. The problem I'm having is > > with a plugin in Rails. Once it runs, if code is executed, then > > changed > > at all, I have to restart Rails. Default rails controllers update just > > fine. They're probably using the remove\_const(). But with my plugin I > > want to have the same functionality... > > Are you talking about the way Rails reloads classes in development > mode? You can enable this in your own classes using: > >    class MyClass >      include Reloadable >    end > > James Edward Gray II That's another good solution. Thanks. > **···** > > -- > Posted via [http://www.ruby-forum.com/\](http://www.ruby-forum.com/%5C).