[R] How to get rid of NULL in the result of apply()?

[hadley wickham]

> Is there a version of apply that returns a list without NULL's?
>
> I try to remove NULL elements in the following example, but neither
> for loops work. Would you please let me know what the correct way is?

Try this function:

compact <- function(x) Filter(Negate(is.null), x)
compact(x)

Hadley


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