package go_koans

func aboutSlices() {
  fruits := []string{"apple", "orange", "mango"}

  assert(fruits[0] == __string__) // slices seem like arrays
  assert(len(fruits) == __int__)  // in nearly all respects

  tasty_fruits := fruits[1:3]           // we can even slice slices
  assert(tasty_fruits[0] == __string__) // slices of slices also share the underlying data

  pregnancy_slots := []string{"baby", "baby", "lemon"}
  assert(cap(pregnancy_slots) == __int__) // the capacity is initially the length

  pregnancy_slots = append(pregnancy_slots, "baby!")
  assert(len(pregnancy_slots) == __int__) // slices can be extended with append(), much like realloc in C
  assert(cap(pregnancy_slots) == __int__) // but with better optimizations

  pregnancy_slots = append(pregnancy_slots, "another baby!?", "yet another, oh dear!", "they must be Catholic")

  assert(len(pregnancy_slots) == __int__) // append() can take N arguments to append to the slice
  assert(cap(pregnancy_slots) == __int__) // the capacity optimizations have a guessable algorithm
}