jam_rapply function

Jam-specific recursive apply

jam_rapply(x, FUN, how = c("unlist", "list"), ...)

Arguments

• x: list
• FUN: function to be called on non-list elements in x.
• how: character string indicating whether to return the list or whether to call unlist() on the result.
• ...: additional arguments are passed to FUN.

Returns

vector or list based upon argument how.

Details

This function is a very lightweight customization to base::rapply(), specifically that it does not remove NULL entries.

Examples

L <- list(entryA=c("miR-112", "miR-12", "miR-112"),
   entryB=factor(c("A","B","A","B"),
      levels=c("B","A")),
   entryC=factor(c("C","A","B","B","C"),
      levels=c("A","B","C")),
   entryNULL=NULL)
rapply(L, length)
jam_rapply(L, length)

L0 <- list(A=1:3, B=list(C=1:3, D=4:5, E=NULL));
rapply(L0, length)
jam_rapply(L0, length)

See Also

Other jam list functions: cPaste(), heads(), list2df(), mergeAllXY(), mixedSorts(), rbindList(), relist_named(), rlengths(), sclass(), sdim(), uniques(), unnestList()