Example
Because iota is incremented after each ConstSpec, values within the same expression list will have the same value for iota:
const (
bit0, mask0 = 1 << iota, 1<<iota - 1 // bit0 == 1, mask0 == 0
bit1, mask1 // bit1 == 2, mask1 == 1
_, _ // skips iota == 2
bit3, mask3 // bit3 == 8, mask3 == 7
)
This example was taken from the Go Spec (CC-BY 3.0).
