Complex SQL with subqueries is often used in projects, and Laravel's query constructor does not directly provide a method to convert it into subqueries, or even though it does, the examples given are not very specific and are not very friendly to beginners. This article mainly talks about how Laravel constru ...
Written in the forefront
Developed before TI5 last year dotaonly.com Web sites need to use APIs of various live platforms. Unlike Twitch, which is not as open as foreign websites, there are ready-made APIs available. Domestic websites are closed and not very friendly to developers. The APIs mentioned in this paper are all crawled from the F ...
Added by KendersPlace on Sat, 18 May 2019 21:08:39 +0300
The end of the latest period is approaching, busier, slower, forgive me.
After setting up the environment and confirming the connection, we can start writing programs.
Then build tables.
(Here's just one example)
Also note when creating a table, because you want to create a view, you should build an ...
In the process of development, we usually encounter many one-to-one data processing situations. Most of the time we will get a list, and then a single record of the list corresponds to another table to achieve business. For example, the following two tables of commodity information and commodity details, here in order to demonstrate the ...
Added by Vizzini on Sat, 18 May 2019 01:31:07 +0300
Laravel loads the. env file in the project at startup. It is often useful for applications to run in different environments with different configurations. For example, you might want to use the tested Mysql database locally and switch the project to the production Mysql database automatically when it comes online. This article will introduce th ...
Added by kdidymus on Fri, 17 May 2019 12:59:48 +0300
Recently, a community has used Hongsoft face recognition, the effect is good. There is another project to compare visitors with their ID cards and share the project, hoping to help them in need.
The address of the project should be added before the codeword. https://gitee.com/panmingzhi/IdCardFaceIdentifier
First of all, we use Huashi CVR 100U. ...
Added by RJDavison on Thu, 16 May 2019 11:06:15 +0300
The Role of Redis Distributed Locks
In a stand-alone environment, there is a second-kill commodity activity, in a short time, server pressure and traffic will rise sharply. This will lead to concurrency problems. If you want to solve concurrency, you need to solve it.
1. Improving system throughput, that is, requests processed by qps per second ...
Added by Drebin on Thu, 16 May 2019 01:18:22 +0300
Added by wiggly81 on Thu, 16 May 2019 00:18:55 +0300
1. JSON data at the back end of the request
JSON is a necessary format for communication between backstage and predecessors of the Internet, replacing the original XML.
XML data fo ...
Added by Chappers on Wed, 15 May 2019 22:03:54 +0300
Exit the Python interpreter and reenter, definitions of functions, variables, and so on will be lost.It is better for larger programs to use files edited by a text editor as execution input, that is, to create scripts.When a program becomes very long, it can be split into several files that are easier to maintain.You may al ...