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rmoff/go_version.txt

Last active Jun 25, 2020
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go version go1.13.7 darwin/amd64
len=6 cap=6 array ptr: 0xc00000c080 value: [2 3 5 7 11 13]
len=0 cap=6 array ptr: 0xc00000c0c0 value: []
len=4 cap=6 array ptr: 0xc00000c100 value: [2 3 5 7]
len=2 cap=4 array ptr: 0xc00000c140 value: [5 7]
package main
import (
"fmt"
"unsafe"
)
func main() {
s := []int{2, 3, 5, 7, 11, 13}
printSlice(s)
// Slice the slice to give it zero length.
s = s[:0]
printSlice(s)
// Extend its length.
s = s[:4]
printSlice(s)
// Drop its first two values.
s = s[2:]
printSlice(s)
}
func printSlice(s []int) {
fmt.Printf("len=%d\tcap=%d\tarray ptr: %v\tvalue: %v\n", len(s), cap(s), (*unsafe.Pointer)(unsafe.Pointer(&s)), s)
}
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