Messing with golang arrays and slices, for kicks.

slice.go

package main

import (
	"fmt"
)

func main() {
	//initialize an array with len/cap 6
	a := [6]string{"G", "o", "l", "a", "n", "g"}

	// print the address of the first letter in a
	printAddr(&a[0])
	
	//Copy arr a to slice b
	b := a[:]
	
	//print the address of b[0], which is the same address as a[0]
	printAddr(&b[0])

	//print the len and cap of arr a and slice b, they're the same
	fmt.Printf("len(a)[%v], cap(a)[%v], len(b)[%v], cap(b)[%v]\n",
		len(a), cap(a), len(b), cap(b))

	//append more than the cap of slice b
	b = append(b, []string{"a","b","c", "b"}...)

	//notice the len/cap change
	fmt.Printf("len(a)[%v], cap(a)[%v], len(b)[%v], cap(b)[%v]\n",
		len(a), cap(a), len(b), cap(b))

	//the address of b[0] is different than it was
	printAddr(&b[0])

}

func printAddr(a *string) {
	fmt.Println(a)
}