Files
learngo/16-slices/exercises/20-observe-the-cap-growth/solution/main.go
2019-08-18 15:08:32 +03:00

37 lines
710 B
Go

// For more tutorials: https://blog.learngoprogramming.com
//
// Copyright © 2018 Inanc Gumus
// Learn Go Programming Course
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
//
package main
import "fmt"
func main() {
var (
nums []int
oldCap float64
)
// loop 10 million times
for len(nums) < 10e6 {
// get the capacity
c := float64(cap(nums))
// only print when the capacity changes
if c == 0 || c != oldCap {
// print also the growth ratio: c/oldCap
fmt.Printf("len:%-15d cap:%-15g growth:%-15.2f\n",
len(nums), c, c/oldCap)
}
// keep track of the previous capacity
oldCap = c
// append an arbitrary element to the slice
nums = append(nums, 1)
}
}