Description Usage Arguments Value See generic Author(s) References See Also Examples
Get By Path (list)
1 2 3 |
input |
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value |
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outer |
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resolve |
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strict |
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... |
Further arguments to be passed to subsequent functions/methods. |
list
.
getByPath
Janko Thyson janko.thyson@rappster.de
http://github.com/rappster/listr
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | ## Not run:
input <- list(
x1 = list(x11 = list(x111 = 1, x112 = 1), x12 = list(x121 = 1, x122 = 1)),
x2 = list(x21 = "x21"),
x3 = list("x31"),
x4 = "x4",
x5 = list(1:3),
list(list(1, 2), list(3, 4)),
list(1:3),
"char 1",
"char 2",
letters[1:3],
c(1,3,5),
TRUE,
new.env(),
data.frame(x = 1:3, y = 1:3)
)
## Inspect structure //
(struc <- getStructure(input))
## Name-based path //
getByPath(input, value = "x1")
getByPath(input, value = "x1/x11")
getByPath(input, value = "x1/x11", resolve = TRUE)
getByPath(input, value = "x1/x11", resolve = TRUE, resolve_by = "ppath")
getByPath(input, value = "x2/x21")
getByPath(input, value = "x2/x21", resolve = TRUE)
getByPath(input, value = "x2/x21", resolve = TRUE, resolve_by = "index")
## Position-based path //
getByPath(input, value = "6/1")
getByPath(input, value = "6/1", resolve = TRUE)
getByPath(input, value = "6/1", resolve = TRUE, resolve_by = "ppath")
## Multiple //
getByPath(input, value = c("x1/x11", "x2/x21"))
getByPath(input, value = c("x1/x11", "x2/x21"), resolve = TRUE)
getByPath(input, value = c("x1/x11", "x2/x21"), resolve = TRUE, resolve_by = "ppath")
getByPath(input, value = c("x1/x11", "x2/x21", "6/1"))
getByPath(input, value = c("x1/x11", "x2/x21", "6/1"), resolve = TRUE)
getByPath(input, value = c("x1/x11", "x2/x21", "6/1"), resolve = TRUE,
resolve_by = "index")
## Condition handling //
getByPath(input, value = "x1/99")
try(getByPath(input, value = "x1/99", strict = 1))
try(getByPath(input, value = "x1/99", strict = 2))
## End(Not run)
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