On Wed, Sep 19, 2012 at 8:00 AM, Damjan Rems wrote:
> So there is a good reason not to implement object duplication (deep
> cloning). Results may be unpredictable so better don't do it.
As I said elsewhere: I prefer custom logic tailored to the use case
and not a general mechanism which simply d
On Tue, Sep 18, 2012 at 9:20 PM, Yaser Sulaiman wrote:
> Hi.
>
> Is there a community convention that specifies which of the two methods,
> `Object#clone` and `Object#dup`, should be overridden for the purposes of
> deep-cloning?
>
> On Stackoverflow, some say that `clone` should be overridden [1]
On Tue, Sep 18, 2012 at 8:44 PM, Damjan Rems wrote:
> Robert Klemme wrote in post #1076432:
>
>> For full object tree copy you can do
>>
>> irb(main):007:0> c = Marshal.load(Marshal.dump(a))
>
> Why is real cloning not implemented in ruby, since this fake cloning can
> lead to a lot of troubles.
On Tue, Sep 18, 2012 at 12:19 PM, Hans Mackowiak wrote:
> when you only have a flat array, you could do:
> b = a.map(&:clone)
>
> but beware, some objects like fixnumbers dont want to be cloned
Well, you can do
b = a.map {|x| x.clone rescue x}
But that is still not a deep copy - unless types of
On Tue, Sep 18, 2012 at 1:47 PM, Thomas Bednarz wrote:
> Well the postgres server is not the problem, I use pgAdmin with its ISQL
> to execute statements and there case doesn't matter either.
I know. I used psql to illustrate the point about case handling
because I assume that it might be simila
On Tue, Sep 18, 2012 at 9:36 AM, Damjan Rems wrote:
> There has probably been some discussion about this problem so sorry if I
> am repeating but it is so crucial that should be mention every once in a
> while.
>
> This simple example:
>
> a=['0']
> 1.upto(2) do
> b = a.clone
> c = a.clone
>
On Tue, Sep 18, 2012 at 9:02 AM, Thomas Bednarz wrote:
> I am playing around with ruby and postgres. Postgresql is usually cAsE
> SenSiTive. When I create a prepared statement in ruby like
>
> conn = PGconn.open(.)
> conn.prepare('stmt1', 'insert into MyTable(my_number, my_string)
> values($1,
