How to de duplicate array slices by Go

The Go standard library itself does not provide a function to remove duplicate elements from slice, which needs to be implemented by itself. The following provides an implementation idea. If there is a better implementation method, please leave a message for discussion. package main import ( "fmt" ) func main() { s := []string{"hello" ...

Posted on Tue, 15 Oct 2019 09:32:26 -0700 by angelcool

Second Kill Solution in High Concurrent Business Scenario (Preliminary Study)

Prodigal Programming goes in all directions Author: The prodigal son programms to go all directions, diligently records, understands to share, deliberately practices, daily improvement! Public Number: Talk late at night Article brief introduction The content of this article is a solution to the problem of oversold in concurrent business scenar ...

Posted on Mon, 14 Oct 2019 20:57:16 -0700 by cityboy101

Harmonious Army(HDU6598 + Minimum Cut + Mapping)

Title Link Portal meaning of the title There are (n) soldiers who want you to assign them jobs. There are (m) pairs of relationships. For a pair of relationships \(u,v\), if you are a warrior, your total ability will increase (a\), and the same wizard will increase \(c\), and a warrior will increase \(\frac{a}{4}+\frac{c}{3}\, which requires yo ...

Posted on Mon, 14 Oct 2019 12:21:48 -0700 by oracle259

POJ-3279 Fliptile (shape pressure dp)

Question meaning: The 01 matrix of the question meaning gives you mxn can flip a coordinate, but at the same time it will flip around (up and down, left and right). Ask how to flip all of them to 0 at least, and print the flipped image.Idea: We can use dfs to search violently, of course, we can also use the shape pressure dp. It happens that I ...

Posted on Mon, 14 Oct 2019 11:00:06 -0700 by upit

tp5 Do not use succes and error methods in try catch

tp5 should not use the succes and error methods that come with the framework in try catch. Original address: https://www.xianhenyuan.com/archives/305 Like this: /// New operation $AdminUserModel = model('AdminUser'); try{ $user_id = $AdminUserModel->add($data); empty($user_id) ? $this->er ...

Posted on Mon, 14 Oct 2019 10:08:22 -0700 by powelly

Summer vacation D14 T2 monokuma (and search + ST table) [SCOI2016] sprout

Title Description Find a number with n length (excluding leading zeros) so that it satisfies m restrictions, each of which corresponds to [l, r] bits and [L, R] bits. For 100% data, 1 < n,m < 100000, 1 < Li < Ri < n, 1 < Li < RI < n, and guarantee Ri-Li=ri-li. Title Solution It can be imagined that if we give attenti ...

Posted on Mon, 14 Oct 2019 08:52:18 -0700 by Solemn

Mybatis Source Analysis: Environment Settings

Mybatis Environment Configuration Class Environment When initializing the Mybatis framework, we need to configure the environment element, which allows multiple elements, so that we can switch back-end storage in different environments. If you have an id attribute for the environment, the id must be unique. Otherwise, the subsequent configurat ...

Posted on Mon, 14 Oct 2019 08:48:17 -0700 by Nabster

Alternative use of Thread, how to execute a code that may deadlock/jam/deadlock

Scenarios and requirements A third-party code needs to be executed, which may be deadlocked/jammed/dead-loop. After the timeout, if it does not end, the task execution is considered to fail and the execution is withdrawn. Implementation scenario 1: Using Task timeout Reference to the implementation method:https://www.cnblogs.com/jasongrass/p/10 ...

Posted on Mon, 14 Oct 2019 08:19:58 -0700 by ph3n0m

Current Limiting Technology for High Concurrent Solution--Leaky Bucket Current Limiting

1. Leaky bucket algorithmLeaky Bucket Algorithms as a Meter can be used for Traffic Shaping and Traffic Policing. Leaky Bucket Algorithms are described as follows:A leaky bucket with a fixed capacity flows water droplets at a constant fixed rate.If the bucket is empty, there is no need to flow out water drops;Water droplets can flow into the le ...

Posted on Mon, 14 Oct 2019 08:00:15 -0700 by fuii_koh

Laravel Authorization: Authorization libraries supporting ACL, RBAC, ABAC and other models

Laravel Authorization Be based on Casbin It is an authorization library that supports access to multiple access control models (such as ACL, RBAC, ABAC, etc.).Before that, you need to know Casbin. install Use Composer to install: composer require casbin/laravel-authz Lauthz LauthzService Provider is auto-discovered and registered by default, bu ...

Posted on Mon, 14 Oct 2019 01:09:27 -0700 by fernyburn