which class defined

[raving_ruby_rider]

Hi,

I need to load scripts dynamically.

Is there a way to know about what
classes were defined by loading a script?

If not, can the Ruby system be asked for a collection
of subclasses for a particular Class?

thx

 

[ara.t.howard]

Is there a way to know about what
classes were defined by loading a script?

see dynaload

http://rubyforge.org/frs/?group_id=1024&release_id=3786
http://codeforpeople.com/lib/ruby/dynaload/dynaload-0.0.0/README

is use it for the very same.

If not, can the Ruby system be asked for a collection of subclasses for a
particular Class?

harp:~ > cat a.rb
class C
class << self
def children() @children ||= [] end
def inherited(other) children << other and super end
def descendants() children.inject([]){|d,c| d.push(c, *c.descendants)} end
end
end

load "b.rb"

p C::children
p C::descendants
p B::children
p B::descendants


harp:~ > cat b.rb
class B < C; end
class D < B; end


harp:~ > ruby a.rb

[B, D]
[D]
[D]


regards.

-a

 

[Ross Bamford]

Is there a way to know about what
classes were defined by loading a script?

I've done something like this before:

sc, ec = [], []
# => [[], []]

ObjectSpace.each_object(Class) { |c| sc << c }
# => 471
require 'generator'
# => true
ObjectSpace.each_object(Class) { |c| ec << c }
# => 473

new_classes = ec - sc
# => [SyncEnumerator, Generator]

If not, can the Ruby system be asked for a collection
of subclasses for a particular Class?

See above (the argument to each_object).

 

[Joel VanderWerf]

see dynaload

http://rubyforge.org/frs/?group_id=1024&release_id=3786
http://codeforpeople.com/lib/ruby/dynaload/dynaload-0.0.0/README

There's also
http://raa.ruby-lang.org/project/script/
http://redshift.sourceforge.net/script/doc/index.html

 

[Dave Cantrell]

Is there a way to know about what
classes were defined by loading a script?

I've done something like this before:

sc, ec = [], []
# => [[], []]

ObjectSpace.each_object(Class) { |c| sc << c }
# => 471
require 'generator'
# => true
ObjectSpace.each_object(Class) { |c| ec << c }
# => 473

new_classes = ec - sc
# => [SyncEnumerator, Generator]

If not, can the Ruby system be asked for a collection
of subclasses for a particular Class?

See above (the argument to each_object).

Heh. If you make your terminal black and green and run this:

ObjectSpace.each_object(Object) { |o| puts o }

... you will see the truth of the Matrix.

-dave

 

[raving_ruby_rider]

thx 2 all.

i like the Script encapsulation

 

[George Ogata]

Heh. If you make your terminal black and green and run this:

ObjectSpace.each_object(Object) { |o| puts o }

.. you will see the truth of the Matrix.

-dave

You get used to it. I don't even see the code. All I see is Symbol,
String, Array, ...


Cypher.

 

[Gene Tani]

You get used to it. I don't even see the code. All I see is Symbol,
String, Array, ...

These show what gets mixed in from where:
http://www.insula.cz/dali/material/rubycl/
http://www.cafepress.com/mathomhouse.4631975