It is excellent. thanks!
On Sun, Nov 10, 2013 at 12:49 PM, Martin Morgan wrote:
> On 11/09/2013 11:31 PM, Hadley Wickham wrote:
>
>> Modelling a mutable entity, i.e. an account, is really a perfect
>> example of when to use reference classes. You might find the examples
>> on http://adv-r.had.
Thanks Martin. It worked well.
Two new questions related to the same subject.
1) Why create this semantic of a final argument name specifically names
value?
2) Regarding performance. When CustomerID(ac) <- "54321" runs, does it only
change the slot from whatever it was to 54321, or it really creat
On 11/09/2013 11:31 PM, Hadley Wickham wrote:
Modelling a mutable entity, i.e. an account, is really a perfect
example of when to use reference classes. You might find the examples
on http://adv-r.had.co.nz/OO-essentials.html give you a better feel
for the strengths and weaknesses of R's differe
On 11/10/2013 03:54 AM, daniel schnaider wrote:
Thanks Martin. It worked well.
Two new questions related to the same subject.
1) Why create this semantic of a final argument name specifically names value?
I do not know. It is a requirement of replacement methods in R in general, not
just S4 m
Modelling a mutable entity, i.e. an account, is really a perfect
example of when to use reference classes. You might find the examples
on http://adv-r.had.co.nz/OO-essentials.html give you a better feel
for the strengths and weaknesses of R's different OO systems.
Hadley
On Sat, Nov 9, 2013 at 9
On 11/09/2013 06:31 AM, daniel schnaider wrote:
It is my first time programming with S4 and I can't get the setter fuction
to actually change the value of the slot created by the constructor.
I guess it has to do with local copy, global copy, etc. of the variable -
but, I could't find anything r
If you want to set a slot you have to refer to it:
ac@CustomerID <- “54321”
or you use your setter:
ac <- CustomerID(ac, “54321”)
What you did was creating a new symbol CustomerID referring to the String
“54321”
CustomerID <- “54321”
CustomerID
[1] “54321”
Best
Simon
On 09 Nov 2013, at 15:
It is my first time programming with S4 and I can't get the setter fuction
to actually change the value of the slot created by the constructor.
I guess it has to do with local copy, global copy, etc. of the variable -
but, I could't find anything relevant in documentation.
Tried to copy examples
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