Go中的切片类型有什么意义？

Question

I have read this but still not fully aware of the advantage of slice against array.So I am expecting somebody in SO explain better than it and I am sure you can :)

Answer 1

Slices have a lot of uses over arrays, several of which other posters have already mentioned.

• Slices can operate in many ways like pointers.
  • Multiple slices can "point" to the same base array
  • Slices are passed by reference, but since a slice itself is a pointer it can be used to pass "arrays" around much more efficiently since the entire array doesn't need to be copied.
• However, unlike pointers, slices provide additional buffer safety
  • Slice underflows and overflows trigger exceptions, rather than allowing you an unsafe ability to access other areas of memory.
  • Slices allow you to limit access to only certain areas of an array. This can be extremely useful in working with subsets.
• The length of a slice is dynamically determined at runtime, unlike arrays which have their sizes fixed at compile time. Also, slices can be dynamically resized at runtime.