DRb object mutation issues

[Nwallins]

# file 1
require 'drb/drb'
require 'thread'
DRb.start_service("druby://:1234", Hash.new.extend(DRbUndumped))
DRb.thread.join
# EOF


# file 2
require 'drb/drb'
d = DRbObject.new_with_uri("druby://:1234")
d[0] = 'zero'
d[0] #=> "zero"
d[0].slice!(0, 1)
d[0] #=> "zero"

# file 3
h = Hash.new
h[0] = 'zero'
h[0].slice!(0, 1)
h[0] #=> "ero"

# how can I change the state of the distributed hash's values?

 

[Joel VanderWerf]

# file 1
require 'drb/drb'
require 'thread'
DRb.start_service("druby://:1234", Hash.new.extend(DRbUndumped))
DRb.thread.join
# EOF


# file 2
require 'drb/drb'
d = DRbObject.new_with_uri("druby://:1234")
d[0] = 'zero'
d[0] #=> "zero"
d[0].slice!(0, 1)
d[0] #=> "zero"

# file 3
h = Hash.new
h[0] = 'zero'
h[0].slice!(0, 1)
h[0] #=> "ero"

# how can I change the state of the distributed hash's values?

Some options:

1. make the values DRbUndumped, too.

2. use non-destructive methods on the values:

d[0] = d[0].slice(0, 1)

3. define a method on your front object that handles everything at
server side, so the client says this:

idx = 0
d.slice_at_index(idx,0,1)