R Under development (unstable) (2024-06-25 r86831 ucrt) -- "Unsuffered Consequences"
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> library(foreign)
> read.S("mySobj")
  factor ints floats
1      a    1    1.1
2     bc    2    1.2
3    def    3    1.3
> data.restore("dumpdata", print = TRUE)
"myobj": structure
[1] "dumpdata"
> print(myobj)
  factor ints floats  logs
1      a   NA    1.1  TRUE
2     bc    2    1.2    NA
3    def    3    1.3 FALSE
> data.restore("tsdumpdata", print = TRUE, verbose = TRUE)
"sunspot": structure
  sunspot structure 3 
    .Data numeric 37 
    .Tsp numeric 3 
    class character 2 
"carbon.dioxide": structure
  carbon.dioxide structure 3 
    .Data numeric 384 
    .Tsp numeric 3 
    class character 2 
[1] "tsdumpdata"
> sunspot
Time Series:
Start = 1936 
End = 1972 
Frequency = 1 
 [1]  40 115 100  80  60  40  23  10  10  25  75 145 130 130  80  65  20  10   5
[20]  10  60 190 180 175 120  50  35  20  10  15  30  60 105 105 105  80  65
> utils::str(carbon.dioxide)
 Time-Series [1:384] from 1959 to 1991: 315 316 316 318 318 ...
> carbon.dioxide[1:60]
 [1] 315.42 316.32 316.49 317.56 318.13 318.00 316.39 314.66 313.68 313.18
[11] 314.66 315.43 316.27 316.81 317.42 318.87 319.87 319.43 318.01 315.75
[21] 314.00 313.68 314.84 316.03 316.73 317.54 318.38 319.31 320.42 319.61
[31] 318.42 316.64 314.83 315.15 315.95 316.85 317.78 318.40 319.53 320.41
[41] 320.85 320.45 319.44 317.25 316.12 315.27 316.53 317.53 318.58 318.92
[51] 319.70 321.22 322.08 321.31 319.58 317.61 316.05 315.83 316.91 318.20
> q()
> proc.time()
   user  system elapsed 
   0.18    0.09    0.26