Bioequivalence and Bioavailability Forum • tryCatch in R

tryCatch in R [Software]

posted by mittyri – Russia, 2022-09-01 16:07 (1042 d 13:21 ago) – Posting: # 23250
Views: 4,214

Hi ElMaestro,

❝ It works with the hamburger example but not when I invoke gcc :

❝

❝ > tryCatch(

❝ + {

❝ + a <- system("gcc -O2 -Wall Tester301.c -o T301", intern=T)

❝ + },

❝ + error = function(cond) {

❝ + a <<- cond

❝ + }

❝ + )

❝ cc1: fatal error: Tester301.c: No such file or directory

❝ compilation terminated.

❝ Warning message:

❝ In system("gcc -O2 -Wall Tester301.c -o T301", intern = T) :


❝   running command 'gcc -O2 -Wall Tester301.c -o T301' had status 1
❝ > a
❝ character(0)
❝ attr(,"status")

❝ [1] 1

OK, a second attempt with already mentioned processx package

tryCatchHamburger <- function(string) {

  # initializing to prevent 'a' to go higher closures in case of error

  a <- NULL

  tryCatch({

    a <- processx::run(string, stderr = NULL)

  },

  error = function(cond) {

    a <<- cond

  })

  a

}



b <- tryCatchHamburger("Hamburger")

class(b)

# [1] "c_error"        "rlib_error_3_0" "rlib_error"     "error"          "condition"  

print(b$parent$message)

# [1] "cannot start processx process 'gcc -O2 -Wall Tester301.c -o T301' (system error 2, No such file or directory) @unix/processx.c:613 (processx_exec)"

c <- tryCatchHamburger("gcc -O2 -Wall Tester301.c -o T301")

class(c)

# [1] "c_error"        "rlib_error_3_0" "rlib_error"     "error"          "condition"   

print(c$parent$message)

# [1] "cannot start processx process 'gcc -O2 -Wall Tester301.c -o T301' (system error 2, No such file or directory) @unix/processx.c:613 (processx_exec)"

—
Kind regards,
Mittyri

Complete thread:

system and system2 in R ElMaestro 2022-08-29 22:29
- system and system2 in R Helmut 2022-08-30 01:10
  - system and system2 in R ElMaestro 2022-08-30 08:52
    - system and system2 in R Helmut 2022-08-30 11:25
  - processx package mittyri 2022-08-31 17:50
- tryCatch in R mittyri 2022-08-31 17:53
  - tryCatch in R ElMaestro 2022-09-01 10:33
    - tryCatch in Rmittyri 2022-09-01 14:07