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From: John Crichton on 12 Jul 2010 14:45
I am trying to write a script that when certain circumstances arise it
creates an object instance that adds some info to a temporary array for
a given time. When the given time is up I would like to perform a couple
actions and print the array. After that the array and object instance
will no longer be needed, so I would like to ensure the obj is freed
from memory. I am pretty new to coding and to Ruby, what is the best
way to accomplish this. I thought it would be a while loop but I am
confused as to how to perform an action once my counter or time has
reached it's end. For example, where can I put the ending action?

class Blah
def initialize
@myarray = Array.new
@init_time = Time.now.to_f
@twomin = @init_time + 120
end

def add_to_array(x)
while Time.now.to_f < @twomin
@myarray << x
end
#pp @myarray.inspect
end

end

Since the while loop has a definite end. Does this end the object's
instance, I suspect no and I need to put some die statement in there or
delete the object from outside the object?

If I do an if/else loop than it will continue to run I suspect too.
if Time.now.to_f < @twomin
@myarray << x
else
pp @myarray.inspect
end

How can I properly run some actions or a method after my counter/time
has reached it's end and then delete the obj instance?

Thanks
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From: R.. Kumar 1.9.1 OSX on 13 Jul 2010 01:09
John Crichton wrote:

> How can I properly run some actions or a method after my counter/time
> has reached it's end and then delete the obj instance?
>
> Thanks

since no one has responded I'll make a quick try...

1. you can always do:

myarray = nil

2. Your variables and the print can be local variables inside the
method. Use @var only for instance level data. in your case, you do not
need the data outside of the method.

def method
array = []
# or array = Array.new
while ....
array << "str"
end
puts array.join(",")
end

In the above example, array is local data and will be released soon
after method is over.

If array is very large, and your method is really long, and you do not
need array after printing, then you can do "array = nil" after its last
use.
HTH.
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From: R.. Kumar 1.9.1 OSX on 13 Jul 2010 01:15
John Crichton wrote:

> @init_time = Time.now.to_f
> @twomin = @init_time + 120

> Thanks

Is there any specific reason you are doing to_f. You can use to_i to get
seconds since epoch too.

You can also just say:

Time.now + 120

This page might help you:
http://www.tutorialspoint.com/ruby/ruby_date_time.htm
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From: John Crichton on 13 Jul 2010 11:13
Thanks Kumar, I appreciate it and no there was no reason I was using
to_f over to_i other than inexperience.

Thanks again.

R.. Kumar 1.9.1 OSX wrote:
> John Crichton wrote:
>
>> @init_time = Time.now.to_f
>> @twomin = @init_time + 120
>
>> Thanks
>
> Is there any specific reason you are doing to_f. You can use to_i to get
> seconds since epoch too.
>
> You can also just say:
>
> Time.now + 120
>
> This page might help you:
> http://www.tutorialspoint.com/ruby/ruby_date_time.htm

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