• API
• FAQ
• Tools
• Archive
SHARE
TWEET Untitled a guest Jan 23rd, 2019 71 Never
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
1. A <- as.list(0:9)
2.         B <- as.list(0:9)
3.         f <- function(x, y) x^2+y
4.
5.         OUT <- list()
6.         for (n in 1:10) OUT[[n]] <- f(A[[n]], B[[n]])
7.         OUT
8.         []
9.          0
10.
11.         []
12.          2
13.
14.         ...
15.
16. zip <- function(x, y){
17.     stopifnot(length(x)==length(y))
18.     z <- list()
19.     for (i in seq_along(x)){
20.         z[[i]] <- list(x[[i]], y[[i]])
21.     }
22.     z
23. }
24. E <- zip(A, B)
25.
26. lapply(E, function(x) f(x[], x[]))
27.
28. []
29.  0
30.
31. []
32.  2
33.
34.  ...
35.
36. ‘mapply’ is a multivariate version of ‘sapply’.  ‘mapply’ applies
37.      ‘FUN’ to the first elements of each ...  argument, the second
38.      elements, the third elements, and so on.  Arguments are recycled
39.      if necessary.
40.
41. OUT <- lapply(1:10, function(x) (A[[x]]^2 + B[[x]]))
42.
43. OUT <- lapply(1:10, function(x) f(A[[x]], B[[x]]))
44.
45. en = c("cattle", "chicken", "pig")
46. zh = c("牛",      "鸡",      "猪")
47.
48. dict <- new.env(hash = TRUE)
49. Add <- function(key, val) dict[[key]] <- val
50.
51. mapply(Add, en, zh)
52. ##  cattle chicken     pig
53. ##    "牛"    "鸡"    "猪"
RAW Paste Data
We use cookies for various purposes including analytics. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy.
Not a member of Pastebin yet?
Sign Up, it unlocks many cool features!

Top