golang of new functions

Another way to create a variable is called with the new built-in functions. Expressions new (T) T will create a type of anonymous variable is initialized to zero value of type T, and then return to the variable address pointer return type is * T.

the p-: new new = (int) the p-//, * int type, int variables point to anonymous
fmt.Println ( * P) // " 0 " 
* P = 2 // int anonymous variable is set 2 
fmt.Println ( * P) // " 2 "

Creating variables and common way to create variable variable declaration statement is no different with the new, in addition to not need to declare a temporary variable name, but we can also be used in expressions new new (T) . In other words, new new similar function is a syntactic sugar, rather than a new foundation concept.

The following two newInt function has the same behavior:

func newInt() *int {
　　return new(int)
}
func newInt() *int {
　　was dummy int
　　return &dummy
}

Each call is a new function returns the address of a new variable, so the following two addresses are different:

p := new(int)
q := new(int)
fmt.Println(p == q) // "false"