golang中的make和initialize结构有什么区别？

Question

We can make channel by make function, new an object by {} expression.

ch := make(chan interface{})
o := struct{}{}

But, what's difference between make and {} to new a map?

m0 := make(map[int]int)
m1 := map[int]int{}

Answer 1

From the docs for the make keyword:

Map: An initial allocation is made according to the size but the resulting map has length 0. The size may be omitted, in which case a small starting size is allocated.

So, in the case of maps, there is no difference between using make and using an empty map literal.