(unknown)

ruby-talk
1

Hi all,

Being able to create constants at run-time using Object.const_set is neat
and all, but is there a way of un-setting them?

Adelle.

2

Adelle Hartley wrote:

Hi all,

Being able to create constants at run-time using Object.const_set is neat
and all, but is there a way of un-setting them?

It is actually Module.const_set, and there is also Module.remove_const, but that method is private. You may need to use send to invoke it.

···

--
Glenn Parker | glenn.parker-AT-comcast.net | <http://www.tetrafoil.com/&gt;

3

something like this:

irb(main):003:0> Object.const_set(:C, 42)
=> 42
irb(main):004:0> Object.send(:remove_const,:C) if Object.const_defined?(:C)
=> 42
irb(main):005:0> C
NameError: uninitialized constant C
        from (irb):5
irb(main):006:0>

···

On Tue, 29 Mar 2005 13:40:35 +0900, Glenn Parker <glenn.parker@comcast.net> wrote:

Adelle Hartley wrote:
> Hi all,
>
> Being able to create constants at run-time using Object.const_set is neat
> and all, but is there a way of un-setting them?

It is actually Module.const_set, and there is also Module.remove_const,
but that method is private. You may need to use send to invoke it.

--
Simon Strandgaard

4

Simon Strandgaard wrote:

···

<glenn.parker@comcast.net> wrote:
> Adelle Hartley wrote:
> > Being able to create constants at run-time using
Object.const_set is
> > neat and all, but is there a way of un-setting them?
>
> It is actually Module.const_set, and there is also
> Module.remove_const, but that method is private. You may
need to use send to invoke it.

something like this:

irb(main):003:0> Object.const_set(:C, 42) => 42
irb(main):004:0> Object.send(:remove_const,:C) if
Object.const_defined?(:C) => 42 irb(main):005:0> C
NameError: uninitialized constant C
        from (irb):5
irb(main):006:0>

Thankyou both. That's working perfectly!

Adelle.