Gopythor

Code package main import "fmt" type Person struct { Address string PostCode string JobType string Company string } type PersonBuilder struct { person *Person } func NewPersonBuilder() *PersonBuilder { return &PersonBuilder{&Person{}} } func main() { pb := NewPersonBuilder() //&{0xc0000b6040} pd := &Person{"a", "b", "c", "d"} //&{a b c d} fmt.Println(pb, pd) }Result &{0xc0000b6040} &{a b c d} pb ..

Go/Study record 2022. 3. 1. 01:02

I was studying that is-a relationship about embeding. But example was not working below refer. refer : https://up-to-date-items.tistory.com/114 package main import "fmt" type Player struct { salary int } type Pro struct { Player bonus int } func (p Player) getSalary() int { return p.salary } func main() { player1 := Player{salary: 100} proPlayer := Pro{Player{salary: 120}, bonus: 30} fmt.Println..

Go/Study record 2022. 2. 28. 17:46

What is the Builder Pattern? Creational pattern Build complicated objects piect by piece So what is the builder pattern? It is considered a creational pattern like the factory pattern. However it differs when it comes to how it builds an object. The builder pattern is used to create an object by putting its pieces together first before instaniating it. The pattern relies on a builder object whic..

Go/Study record 2022. 2. 27. 21:32

Given an integer array nums and an integer val, remove all occurrences of val in nums in-place. The relative order of the elements may be changed. Since it is impossible to change the length of the array in some languages, you must instead have the result be placed in the first part of the array nums. More formally, if there are k elements after removing the duplicates, then the first k elements..

Go/Leet Code 2022. 2. 27. 01:40

Array Deletions Deleting From the End of an Array Code(Creates an Array with room for 10 elements, and then adds elements into the first 6 indexes of it.) Java // Declare an integer array of 10 elements. int[] intArray = new int[10]; // The array currently contains 0 elements int length = 0; // Add elements at the first 6 indexes of the Array. for(int i = 0; i < 6; i++) { intArray[length] = i; l..

Go/Leet Code 2022. 2. 26. 23:27

What is the Singleton Pattern An object gets created only once then reused. Let's start by defining the singleton design pattern that is simply and object that get created only once in our code. And then gets used again and again We don't create multiple instances often. Why use the Singleton Pattern When the object needs to keep state throughout our program. The singleton pattern is useful when..

Go/Mastering Go 2022. 2. 26. 00:44

You are given two integer arrays nums1 and nums2, sorted in non-decreasing order, and two integers m and n, representing the number of elements in nums1 and nums2 respectively. Merge nums1 and nums2 into a single array sorted in non-decreasing order. The final sorted array should not be returned by the function, but instead be stored inside the array nums1. To accommodate this, nums1 has a lengt..

Go/Leet Code 2022. 2. 25. 03:48

Factory Pattern Creational pattern The caller does not create objects directly The factory function or object handles the creation of new objects based on some conditions So what is the factory pattern? It belongs to a pattern type called creational pattern. This is because the factory pattern is mostly targeted towards creating object. In the factory pattern, the code that uses the object is no..

Go/Mastering Go 2022. 2. 24. 22:50