func append(slice Type, elems ...Type) Type
The append built-in function appends elements to the end of a slice. If
it has sufficient capacity, the destination is resliced to accommodate
the new elements. If it does not, a new underlying array will be
allocated. Append returns the updated slice. It is therefore necessary
to store the result of append, often in the variable holding the slice
slice = append(slice, elem1, elem2)
slice = append(slice, anotherSlice...)
As a special case, it is legal to append a string to a byte slice, like
slice = append(byte("hello "), "world"...)
*func append(slice Type, elems ...Type) Type the statement of three
Type is same Type, what's the special mean?if i change to
func append(slice A, elems ...A) A ,is't ok?*
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