Golang Tutorial Corrections: Slices, Functions

[MukuFlash03]

Found some incorrect explanations, syntax in the Golang tutorial.

---

1. Slices

Code:

package main

import "fmt"

func main () {
    // Add your code here.
    exampleSlice = make([]int)
    fmt.Println(exampleSlice)
}

Errors:

./prog.go:7: undefined: exampleSlice
./prog.go:7: missing len argument to make([]int)
./prog.go:8: undefined: exampleSlice

Corrections needed:

• Length must be specified else error encountered.
• Shorthand notation ':=' is to be used instead of '='.

---

2. Functions

Code:

package main

import "fmt"

func add (a int, b int) (sum int) {         // here we are defining the variable name of what we are returning
    sum = a + b                             // so no need for a return statement, go takes care of it
}

func main() {
    sum := add(3, 5)

    fmt.Println(sum)                // prints 8
}

Errors:

./prog.go:7: missing return at end of function

Corrections needed:

• Still need to use 'return'.
• Named return just helps in skipping declaration step.
• Also ensures all intended values are returned automatically.
• • No need to specify names but return still required.