[R] Retrievable results in a procedure

Steven Yen @tyen @ending from ntu@edu@tw
Wed Dec 26 02:32:29 CET 2018

Thanks Sarah. Below, replacing "structure" with "invisible" does 
wonders--that serves my need. What I want is quite simple - I call a 
procedure and it does two things: (1) display results for all; (2) save 
retrievable results for use in further analysis, e.g., in knitr. 
Earlier, with "structure" (or with results<-list(...)) it spits out the 
main results, with components repeated (printed) in a painfully long 
list. Yet, as I said, calling with foo<-try(...) prints the main results 
with the list suppressed. I am just looking for option to NOT have to 
call with foo<- always. There must be more ways to do this, but I am 
happy with invisible. Thanks again.

On 12/25/2018 11:10 PM, Sarah Goslee wrote:
> I'm a bit confused about what you actually want, but I think 
> invisible() might be the answer.
> Note that there's already a base function try() so that's not a great 
> name for test functions.
> Sarah
> On Tue, Dec 25, 2018 at 8:47 AM Steven Yen <styen using ntu.edu.tw 
> <mailto:styen using ntu.edu.tw>> wrote:
>     I would like to suppressed printing of retrievable results in a
>     procedure and to print only when retrieved.
>     In line 10 below I call procedure "try" and get matrices A,B,C all
>     printed upon a call to the procedure. I get around this unwanted
>     printing by calling with v<-try(A,B) as in line 11.
>     Any way to suppress printing of the retrievable results listed in the
>     structure command? Thank you, and Merry Christmas to all.
>     A<-matrix(rpois(16,lambda=5),nrow=4,byrow=T)
>     B<-diag(4)
>     try<-function(A,B){
>       C<-A+B
>       cat("\nC:\n"); print(C)
>     structure(list(A=A,B=B,C=C))
>     }
>     try(A,B)    # line 10
>     v<-try(A,B) # line 11
>     -- 
>     styen using ntu.edu.tw <mailto:styen using ntu.edu.tw> (S.T. Yen)
>             [[alternative HTML version deleted]]
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> -- 
> Sarah Goslee (she/her)
> http://www.sarahgoslee.com

styen using ntu.edu.tw (S.T. Yen)

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