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Tuples "cannot be marshalled in a foreign call" when trying to export a Haskell function to C


By : Prashanth Damera
Date : October 18 2020, 06:10 PM
seems to work fine You're not supposed to uncurry the arguments of exported functions. Use this in place of your func_hs and it will work fine:
code :
func_hs :: CInt -> CInt -> CInt

func_hs hp maxHp = if verify_hp(hp,maxHp) == hp + 10 && hp < maxHp then hp + 10 else maxHp


foreign export ccall func_hs :: CInt -> CInt -> CInt
int func_hs(int hp, int maxHp);
int func_hs(tuple<int, int> hp_and_maxHp); // not valid C!


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How to eliminate "NA/NaN/Inf in foreign function call (arg 7)" running predict with randomForest


By : Elite Security
Date : March 29 2020, 07:55 AM
around this issue Your code is not entirely reproducible (there's no running of the actual randomForest algorithm) but you are not replacing Inf values with the means of column vectors. This is because the na.rm = TRUE argument in the call to mean() within your impute.mean function does exactly what it says -- removes NA values (and not Inf ones).
You can see this, for example, by:
code :
impute.mean <- function(x) replace(x, is.na(x) | is.nan(x) | is.infinite(x), mean(x, na.rm = TRUE))
losses <- apply(losses, 2, impute.mean)
sum( apply( losses, 2, function(.) sum(is.infinite(.))) )
# [1] 696
impute.mean <- function(x) replace(x, is.na(x) | is.nan(x) | is.infinite(x), mean(x[!is.na(x) & !is.nan(x) & !is.infinite(x)]))
losses <- apply(losses, 2, impute.mean)
sum(apply( losses, 2, function(.) sum(is.infinite(.)) ))
# [1] 0

inline-c : "`Type` cannot be marshalled in a foreign call"


By : brock byler
Date : March 29 2020, 07:55 AM
it fixes the issue C enum is not marshallable foreign type, that is what compiler tries to tell you. To work around it, pass it as a CInt using fromEnum (looks like c2hs now supports it via hooks, but I never tried it.)

Node JS - How to call a methods inside a "module.export" function?


By : Per Jakobsson Martin
Date : March 29 2020, 07:55 AM
Hope this helps method_I_need is not the child of create but a function only available in the scope of the create method. If you want to access it, you could return an object with the functions you want.
You could try the following :
code :
// read_first
module.exports.create = arg1 => { 
  const methodINeed = arg2 => {
    console.log('worked')
  }

  return { methodINeed }
}

kmeans complains "NA/NaN/Inf in foreign function call (arg 1)", when there are none?


By : user2136194
Date : March 29 2020, 07:55 AM
it helps some times The key is to convert the column with the desired labels to row names with
df <- tibble::column_to_rownames(df, var = "labels")

How to run vegan::varpart without having this "NA/NaN/Inf in foreign function call (arg 1)" message error?


By : user3117358
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further varpart performs variation partition, and for that it needs at least two variables for which to partition the variation. You had only one (Session) – the second one you supplied (LONG) was constant, and hence will explain no variation and was not counted as a variable. We do not check against non-varying "variables", and you get a confusing error message. However, if you are hand-crafting your model with meaningless (constant) "variables", you should expect weird error messages. We could add a test against constants, but somehow it feels strange.
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