GO learning - 010 slice op

go
GO
Publish Date:   2023-09-14
Update Date:   2023-09-14
Word Count:   225
Read Times:   1 Min
Read Count:  

GO learning - 010 slice op

image-20230914162021227

image-20230914162239345

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package main

import "fmt"

func main() {
	var numbers = make([]int, 3, 5)

	fmt.Printf("len = %d, cap = %d, slice = %v\n", len(numbers), cap(numbers), numbers)

	numbers = append(numbers, 1)

	fmt.Printf("len = %d, cap = %d, slice = %v\n", len(numbers), cap(numbers), numbers)

	numbers = append(numbers, 2)

	fmt.Printf("len = %d, cap = %d, slice = %v\n", len(numbers), cap(numbers), numbers)

	numbers = append(numbers, 3)

	fmt.Printf("len = %d, cap = %d, slice = %v\n", len(numbers), cap(numbers), numbers)

	fmt.Println("---------------")
	var numbers2 = make([]int, 3)
	fmt.Printf("len = %d, cap = %d, slice = %v\n", len(numbers2), cap(numbers2), numbers2)
	numbers2 = append(numbers2, 1)
	fmt.Printf("len = %d, cap = %d, slice = %v\n", len(numbers2), cap(numbers2), numbers2)

}
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len = 3, cap = 5, slice = [0 0 0]
len = 4, cap = 5, slice = [0 0 0 1]
len = 5, cap = 5, slice = [0 0 0 1 2]
len = 6, cap = 10, slice = [0 0 0 1 2 3]
---------------
len = 3, cap = 3, slice = [0 0 0]
len = 4, cap = 6, slice = [0 0 0 1]
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package main

import "fmt"

func main() {
	s := []int{1, 2, 3}

	s1 := s[0:2]

	fmt.Println(s1)

	s1[0] = 100
	fmt.Println(s)
	fmt.Println(s1)

	s2 := make([]int, 3)

	copy(s2, s)
	fmt.Println(s2)
}
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[1 2]
[100 2 3]
[100 2]
[100 2 3]
Author: Liang Junyi
Link: https://liangjunyi010.github.io/liangjunyi.github.io/2023/09/14/go-learning-010-slice-op/
Reprint policy: All articles in this blog are used except for special statements CC BY 4.0 reprint policy. If reproduced, please indicate source Liang Junyi !
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