Jason Creighton
9/17/2003 7:54:00 PM
On Wed, 17 Sep 2003 21:22:13 +0900
Joey Gibson <joey@joeygibson.com> wrote:
> On 9/17/2003 6:34 AM, gabriele renzi wrote:
>
> >Marshal::dump
> > dump( anObject [, anIO] , limit=--1 ) -> anIO
> >
> >BTW you could even use PStore, included in the standard lib, it works
> >similar to an hash, but gets saved on disk and supports ''transactions''
> >for data integrity.
> >
> >
>
> You could also use YAML:
>
> require ''yaml''
> one = {"Name" => "Smith", "Surname" => "John"}
> two = {"Name" => "Dupont", "Surname" => "Jean"}
>
> myFriends = [one, two]
>
> File.open("myfriends.db", "w") {|file| file.write(myFriends.to_yaml)}
> myFriends = File.open("myfriends.db") {|file| YAML.load(file)}
Yes, I was just about to mention YAML. Also note that you can use
YAML::Store as a drop-in PStore replacement. (In fact, this example is
the example given in pstore.rb, I just require''d yaml/store, and changed
the db = line to YAML::Store)
~/prog/ruby$ cat yaml-store-example.rb
require ''yaml/store''
db = YAML::Store.new("/tmp/foo")
db.transaction do
p db.roots
ary = db["root"] = [1,2,3,4]
ary[0] = [1,1.5]
end
db.transaction do
p db["root"]
end
~/prog/ruby$ ruby yaml-store-example.rb
[]
[[1, 1.5], 2, 3, 4]
~/prog/ruby$ cat /tmp/foo
---
root:
-
- 1
- 1.5
- 2
- 3
- 4
~/prog/ruby$
Jason Creighton