tests/testthat/_snaps/parallel.md

In tidyverse/purrr: Functional Programming Tools

Can't parallel map without first setting daemons

Code
  map(list(x = 1, y = 2), list, .parallel = TRUE)
Condition
  Error in `map()`:
  ! No daemons set - use e.g. `mirai::daemons(6)` to set 6 local daemons.

Can't use ... in a parallel map

Code
  map(list(x = 1, y = 2), list, a = "wrong", .parallel = TRUE)
Condition
  Error in `map()`:
  ! Don't use `...` with `.parallel = TRUE`.

all inform about location of problem

Code
  map_int(1:3, carrier::crate(function(x, bad = 2:1) if (x == 3) bad else x),
  .parallel = TRUE)
Condition
  Error in `map_int()`:
  ! `x[[3]]` must have size 1, not size 2.
Code
  map_int(1:3, carrier::crate(function(x, bad = "x") if (x == 3) bad else x),
  .parallel = TRUE)
Condition
  Error in `map_int()`:
  ! Can't convert `<list>[[3]]` <character> to <integer>.
Code
  map(1:3, carrier::crate(function(x, bad = stop("Doesn't work")) if (x ==
  3) bad else x), .parallel = TRUE)
Condition
  Error in `map()`:
  i In index: 3.
  Caused by error:
  ! Doesn't work

error location uses name if present

Code
  map_int(c(a = 1, b = 2, c = 3), carrier::crate(function(x, bad = stop(
    "Doesn't work")) if (x == 3) bad else x), .parallel = TRUE)
Condition
  Error in `map_int()`:
  i In index: 3.
  i With name: c.
  Caused by error:
  ! Doesn't work
Code
  map_int(c(a = 1, b = 2, 3), carrier::crate(function(x, bad = stop(
    "Doesn't work")) if (x == 3) bad else x), .parallel = TRUE)
Condition
  Error in `map_int()`:
  i In index: 3.
  Caused by error:
  ! Doesn't work

requires output be length 1 and have common type

Code
  map_vec(1:2, ~ rep(1, .x), .parallel = TRUE)
Condition
  Error in `map_vec()`:
  ! `out[[2]]` must have size 1, not size 2.
Code
  map_vec(1:2, ~ if (.x == 1) factor("x") else 1, .parallel = TRUE)
Condition
  Error in `map_vec()`:
  ! Can't combine `<list>[[1]]` <factor<bf275>> and `<list>[[2]]` <double>.

can enforce .ptype

Code
  map_vec(1:2, ~ factor("x"), .ptype = integer(), .parallel = TRUE)
Condition
  Error in `map_vec()`:
  ! Can't convert `<list>[[1]]` <factor<bf275>> to <integer>.

verifies result types and length

Code
  map2_int(1, 1, ~"x", .parallel = TRUE)
Condition
  Error in `map2_int()`:
  ! Can't convert `<list>[[1]]` <character> to <integer>.
Code
  map2_int(1, 1, ~ 1:2, .parallel = TRUE)
Condition
  Error in `map2_int()`:
  ! `x[[1]]` must have size 1, not size 2.
Code
  map2_vec(1, 1, ~1, .ptype = character(), .parallel = TRUE)
Condition
  Error in `map2_vec()`:
  ! Can't convert `<list>[[1]]` <double> to <character>.

Code
  pmap_int(list(1), ~"x", .parallel = TRUE)
Condition
  Error in `pmap_int()`:
  ! Can't convert `<list>[[1]]` <character> to <integer>.
Code
  pmap_int(list(1), ~ 1:2, .parallel = TRUE)
Condition
  Error in `pmap_int()`:
  ! `x[[1]]` must have size 1, not size 2.
Code
  pmap_vec(list(1), ~1, .ptype = character(), .parallel = TRUE)
Condition
  Error in `pmap_vec()`:
  ! Can't convert `<list>[[1]]` <double> to <character>.

requires vector inputs

Code
  map2(environment(), "a", identity, .parallel = TRUE)
Condition
  Error in `map2()`:
  ! `.x` must be a vector, not an environment.
Code
  map2("a", environment(), "a", identity, .parallel = TRUE)
Condition
  Error in `map2()`:
  ! `.y` must be a vector, not an environment.

recycles inputs

Code
  map2(1:2, 1:3, `+`, .parallel = TRUE)
Condition
  Error in `map2()`:
  ! Can't recycle `.x` (size 2) to match `.y` (size 3).
Code
  map2(1:2, integer(), `+`, .parallel = TRUE)
Condition
  Error in `map2()`:
  ! Can't recycle `.x` (size 2) to match `.y` (size 0).

Code
  pmap(list(1:2, 1:3), `+`, .parallel = TRUE)
Condition
  Error in `pmap()`:
  ! Can't recycle `.l[[1]]` (size 2) to match `.l[[2]]` (size 3).
Code
  pmap(list(1:2, integer()), `+`, .parallel = TRUE)
Condition
  Error in `pmap()`:
  ! Can't recycle `.l[[1]]` (size 2) to match `.l[[2]]` (size 0).

requires list of vectors

Code
  pmap(environment(), identity)
Condition
  Error in `pmap()`:
  ! `.l` must be a list, not an environment.
Code
  pmap(list(environment()), identity)
Condition
  Error in `pmap()`:
  ! `.l[[1]]` must be a vector, not an environment.

tidyverse/purrr documentation built on Feb. 8, 2025, 12:58 a.m.