本篇内容主要讲解“如何使用startup架构”,感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷,实用性强。下面就让小编来带大家学习“如何使用startup架构”吧!
每天学点算法
幂集 | Power Set
一个集合的幂集是它所有子集的集合。写一个函数,给定一个集合,生成它的幂集。
The power set of a set is the set of all its subsets. Write a function that, given a set, generates its power set.
For example, given the set {1, 2, 3}, it should return {{}, {1}, {2}, {3}, {1, 2}, {1, 3}, {2, 3}, {1, 2, 3}}.
# https://tutorialspoint.dev/algorithm/mathematical-algorithms/power-set
# python3 program for power set
import math;
def printPowerSet(set,set_size):
# set_size of power set of a set
# with set_size n is (2**n -1)
pow_set_size = (int) (math.pow(2, set_size));
counter = 0;
j = 0;
# Run from counter 000..0 to 111..1
for counter in range(0, pow_set_size):
for j in range(0, set_size):
# Check if jth bit in the
# counter is set If set then
# print jth element from set
if((counter & (1 << j)) > 0):
print(set[j], end = "");
print("");
# Driver program to test printPowerSet
set = ['a', 'b', 'c'];
printPowerSet(set, 3);
# This code is contributed by mits.每天学点Golang
使用GORM和GIN在Golang中实现简单分页功能
原文:Implement Pagination In Golang Using GORM and GIN
The packages you need to install in our project is:
go get github.com/go-sql-driver/mysql
go get github.com/gin-gonic/gin
go get github.com/jinzhu/gorm
目录结构
- /first-api
- /Config
- /Controllers
- /Model
- /Routes
- go.mod
- go.sum
- main.go
核心分页部分。
import (
"first/src/first-api/Config"
models "first/src/first-api/Model"
)
func GetAllUsers(user *models.User, pagination *models.Pagination) (*[]models.User, error) {
var users []models.User
offset := (pagination.Page - 1) * pagination.Limit
queryBuider := Config.DB.Limit(pagination.Limit).Offset(offset).Order(pagination.Sort)
result := queryBuider.Model(&models.User{}).Where(user).Find(&users)
if result.Error != nil {
msg := result.Error
return nil, msg
}
return &users, nil
}其他值得阅读
一个startup架构概览
原文:Architecture for a startup
<img src="https://cache.tdyun.com/upload/information/20210524/357/32098.png" alt="img" />
静态前台(Static web app):
后台(Backend production system)
分析(Analytics system)
监视(Monitoring)
部署(deployment)
Terraform is used for infrastructure as code
Ansible is used as configuration management.
我的妈妈在用Arch Linux
原文:My Mom Uses Arch Linux
This gist covers the whole step-by-step procedure I followed to get it up and running.
大规模Vue.js应用的4个最佳实践
原文:4 Best Practices for Large Scale Vue.js Projects
Use Vue Slots
F.I.R.S.T principle: Build & share independent components
well organized VUEX Store
└── store
├── index.js
├── actions.js
├── mutations.js
└── modules
Unit Tests
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