Get value of struct with interfaces

Question

I\'m trying to parse this petition (https://www.binance.com/api/v1/depth?symbol=MDABTC&limit=500)

I was having tons of problems to create an struct for it, so I used

Answer 1

In Golang Spec

For an expression x of interface type and a type T, the primary expression

x.(T)

asserts that x is not nil and that the value stored in x is of type T. The notation x.(T) is called a type assertion.

Fetching an underlying value of string type you need to type assert to string from interface.

books.Asks[0][0].(string)

For performing an arithmetic operation on same you needs to convert string into float64 to take into account decimal values

v := strconv.ParseFloat(books.Asks[0][0].(string), 64) * strconv.ParseFloat(books.Asks[0][1].(string), 64)

Checkout code on Go playground