golang:interface{} Type Test

This is a creation in Article, where the information may have evolved or changed.

The Golang hollow interface that is interface{} can be considered as any type, that is, void in C *.

There are 2 kinds of syntax for type testing of interface{}:

1. Comma-ok asserts that:

Value, OK = element. (T),

where T is the specific type.

2. Switch Test:

Switch element. (type) {

Case T1:

Case T2:

Default

}

Where T1, T2 is the specific type.

Note: element. The (type) syntax cannot be used in any logic outside of switch. A COMMA-OK assertion or reflection must be used outside of switch:

Reflect. TypeOf (Element)

Reflect. ValueOf (Element)