Ad:

Ruby Discussion Thread
Marked Solved
Views: 8357

Apr 22nd, 2007

how do you use marshal.dump in Ruby please?

Expand Post »

Hey, I'm learning Ruby and I've just about got it sorted. I have just one (or maybe more) question(s): What is marshal.dump and does it allow you to save data to a file outside of the Ruby program? If not, how do I create saved data (ie. character attributes inside a text-based game)? Thanks for answers!

Similar Threads

Anyone want to learn Ruby in Ruby
need help with learning ruby in Ruby

Gazco

Reputation Points: 10

Solved Threads: 2

Newbie Poster

Offline

8 posts
since Mar 2007

Permalink

Apr 22nd, 2007

Re: how do you use marshal.dump in Ruby please?

Click to Expand / Collapse Quote originally posted by Gazco ...

Hey, I'm learning Ruby and I've just about got it sorted. I have just one (or maybe more) question(s): What is marshal.dump and does it allow you to save data to a file outside of the Ruby program? If not, how do I create saved data (ie. character attributes inside a text-based game)? Thanks for answers!

For some reason the rubycentral site seems to be down so the original article I'd link to isn't available, however it's in the google cache.

pty

Reputation Points: 64

Solved Threads: 39

Posting Pro

Offline

530 posts
since Oct 2005

Permalink

Apr 22nd, 2007

Re: how do you use marshal.dump in Ruby please?

Click to Expand / Collapse Quote originally posted by Gazco ...

Hey, I'm learning Ruby and I've just about got it sorted. I have just one (or maybe more) question(s): What is marshal.dump and does it allow you to save data to a file outside of the Ruby program? If not, how do I create saved data (ie. character attributes inside a text-based game)? Thanks for answers!

You can read this small tutorial here -
http://sitekreator.com/satishtalim/o...alization.html

Hope that helps.

IndianGuru

Reputation Points: 10

Solved Threads: 1

Newbie Poster

Offline

9 posts
since Apr 2007

Permalink

Apr 23rd, 2007

Re: how do you use marshal.dump in Ruby please?

Thanks, these sites really helped a lot and answered my questions, but the last one also brought up one little one: in the second example the programmer used

Ruby Syntax (Toggle Plain Text)
File.open('game', 'w+') do |f|
File.open('game', 'w+') do |f|

What does the string

Ruby Syntax (Toggle Plain Text)

'w+'

do and

Ruby Syntax (Toggle Plain Text)

|f|

do please? Thanks once again for any help.

Gazco

Reputation Points: 10

Solved Threads: 2

Newbie Poster

Offline

8 posts
since Mar 2007

Permalink

Apr 23rd, 2007

Re: how do you use marshal.dump in Ruby please?

Click to Expand / Collapse Quote originally posted by Gazco ...

Thanks, these sites really helped a lot and answered my questions, but the last one also brought up one little one: in the second example the programmer used
Ruby Syntax (Toggle Plain Text)
File.open('game', 'w+') do |f|
File.open('game', 'w+') do |f|
What does the string
Ruby Syntax (Toggle Plain Text)
'w+'
'w+'
do and
Ruby Syntax (Toggle Plain Text)
|f|
|f|
do please? Thanks once again for any help.

"w+" is a mode string; it truncates the file (or creates a new one if it doesn't exist)

|f| is a block. Basically it means that in the following code f refers to the file.

A quick example of a simple block:

Ruby Syntax (Toggle Plain Text)
>> 5.times do |i|
?> puts i.to_s
>> end
0
1
2
3
4
=> 5
>> 5.times do |i|
?> puts i.to_s
>> end
0
1
2
3
4
=> 5

pty

Reputation Points: 64

Solved Threads: 39

Posting Pro

Offline

530 posts
since Oct 2005

Permalink

Apr 24th, 2007

Re: how do you use marshal.dump in Ruby please?

Thank you this really helps!

Gazco

Reputation Points: 10

Solved Threads: 2

Newbie Poster

Offline

8 posts
since Mar 2007

This thread is solved

Either the thread starter or a moderator has marked this thread as solved. You can most likely trust the responses and answers given. There is most likely no reason for any further responses to be posted here. If you have a related question, please start a new thread in this forum instead.

This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.

Previous Thread in Ruby Forum Timeline: Ruby, Rails Job sites - Resource

Next Thread in Ruby Forum Timeline: What do you think of Ruby?

DaniWeb Message

Cancel Changes

User Name
Password