[Libguestfs] [PATCH 2/5] v2v/lib/util.ml: Get disk allocation from input

[Richard W.M. Jones]

I mean, I don't like functions with lots of parameters either (and
this function does have a lot already).  But at least with strong
typing + labels it's harder to mix them up.

An alternative is to put the parameters into a struct and pass them
that way.  That's essentially what I did with the Input/Output/Convert
"options" structs.  A disadvantage of this is it's less clear when a
parameter is no longer being used because the compiler can't warn you
about it (-w +20 [ignored-extra-argument] Unused function argument.)

Rich.

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