Assume there is a tuple-type with, say, the type signature: ( int, int, [int] )
Say that the sequence is a 3D location, and I want to find it's distance from the origin. I could say:
Everyone agrees that (1) and (2) are legal, and I think I'm the only one arguing for (3). An alternative for (3) is
but that's even longer.
After trying to write the alternatives down for this, I must ask, is
(3) harder or easier to understand than the others? Even if I had
named fields for the tuple (e.g., instead of
), I think that the wordiness of it is distracting.
Note that, from the data-parallel point of view, (2) is perfect, since it leads to (5):
A very concise statement indeed!
Alternative (4) gives me an urge to use sequence pattern matching and write
or more simply