struct_tuples_1.fs

let foo x = struct (x, Math.Sin x)
...
for n in 1..100000000 do
  let struct (x, sinx) = foo (float n / 1000.)
...
// Debug
// Run: 00:00:03.5127102
// GC.Collect 2: 00:00:00.0001495

// Release
// Run: 00:00:00.3443932
// GC.Collect 2: 00:00:00.0000796