check single integer

[surmann]

How do I check a single integer value? Currently I use assertInteger(x, any.missing=FALSE, len=1). Do I overlook a function, because I expected one with a shorter call similar to e.g. checkInt.

[berndbischl]

RTFM you bloody noob !!!!

Hi Dirk, more seriuosly there is this overview, that mentions scalars
https://github.com/mllg/checkmate

There is checkInt and checkCount?

[surmann]

Take it from me, I did!

I looked at checkInt, checkCount and all the others that check numeric values. However, in my opinion they seem to be for real or integerish values, not for native integer values because of the tol value. checkInt(4) is TRUE but not checkInteger(4).

Probably I interpret or use some functions in a wrong manner?

[berndbischl]

So, you want to function that lets 1L pass, but not 1?

[berndbischl]

What I should add here:
Nearly always I want this behavior: I have a function f(k) where k is supposed to be an int.
Now, a user should be able to say f(1L) and f(1), as
a) most users do not even really know that 1 is NOT an int. I dont want to hassle them with an error.
b) typing the L might be cumbersome

So what i do is
k = asInt(k)

• That performs a check whether k is "integerish", so allow 1 as well
• after the above line I have type-safety, so I know that k is now really of type "integer" in my code, as it is potentially converted from 1 to 1L

Does that make sense?

[surmann]

First Comment: Yes.
Second Comment: That makes sense, I will use it this way.

Thanks!