[R] First elements of a list.

[Jacques VESLOT]

 > sapply(a, "[", 1)
[1] "John"   "Jane"   "koda"   "gunner"
 > sapply(a, "[", 2)
[1] "Smith" "Doe"   NA      NA
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Jacques VESLOT

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cory a écrit :
> Suppose I have the following list:
> 
> a <- strsplit(c("John;Smith", "Jane;Doe", "koda", "gunner"), ";")
> 
> I want to get to these two vectors without looping...
> 
> firstNames:    c("John", "Jane", "koda", "gunner")
> lastNames:    c("Jane", "Doe", NA, NA)
> 
> Thanks
> 
> cn
> 
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