The seventh episode of the Aite Tribe Clinic: What function was used to write the King of Pesticide Welfare Bureau?

【51CTO.com original article】 Activity description : Aiti Tribe is a service community that provides core developers with in-depth technical exchanges, solutions to development needs, and resource sharing. Based on this community, we invite industry technology experts to provide one-on-one breakthroughs on development needs and remove stumbling blocks in the development process. We help developers solve development problems with the most professional and efficient answers.

Topic keywords : Python/PHP/FC/WP/Big Data/CPU

Tribe lineup : 51CTO community think tank

Object-oriented : Java engineer, PHP development engineer, Python development engineer, IT operation and maintenance

How to participate : Join the 51CTO developer QQ exchange group (group number 370892523 (full), please add 312724475 ). If you have any technical questions, ask in the group or send them to the group owner.

Event Details :

Python-Ma-Beijing : I would like to ask everyone, when using label to display pictures in Tkinter in Python, the picture pixels are too large, how to scale the picture?

PHP-Coeus-Anhui : Does PIL have a resize method? Baidu's.

C#-Xiao Yang-Zhengzhou : Who knows about C# printing template reports? I'm begging for some advice on how to print C# template reports. You can set the header and footer, and the text and pictures inside. You can have multiple templates, and different modules can have different display formats. The report template is as follows:

[[196550]]

1>PHP-Little Star-Guangzhou : I think it would be better for you to find a framework directly. There seem to be ready-made ones. For PHP export to excel, there is a ready-made PHPExcel. So, you can search for the corresponding language. It must be difficult to write it yourself.

2>Product-Leon-Shanghai : You can try third-party tools FastReport or Microsoft's ReportViewer. These two are basically used in our projects.

PHP-Xiao Pang-Jinhua : The backup and restore operations between different databases are similar. The target databases selected during the restore are different. Sometimes you should also check whether the backup package has declared the database. This sentence means that when I import the backup file of database A into the empty database B, the import fails. Because the backup file of database A stipulates that the database name that can be imported can only be the name of database A?

Web-Bai Yang-Zhengzhou : Theoretically, it should be possible. The addition, deletion, query and modification of the database are all updated data. If you forcefully import a new database by module at the design level, even if you clear the original database, it still exists at the design level, unless you completely delete the database. However, the statement you mentioned about importing the backup file to clear the database should refer to the path setting of the database to be restored corresponding to the backup database.

Web-Bai Yang-Zhengzhou : Is there any specific difference between HyperV and VM? HyperV and VM seem to be similar, both support clustering.

Embedded-Warlord-Beijing : What's the difference? They are all virtual machines.

Cloud Computing - Cainiao - Suzhou : Is FC a mesh channel or a fiber channel? How to tell? I see that the full English abbreviations of both are FC.

Cloud Computing - Enwei - Chengdu : FC - Fibre Channel

Fibre Channel is actually a mesh channel, but it uses optical fiber as the medium. Copper wire can also carry FC (early transmission medium). Different from GigaE Channel (Ethernet Channel). ——Fibre Channel is called Fiber Channel, which is an industry convention. People who do storage (such as FC SAN) know that FC not only uses optical fiber (which is optical fiber) at the physical layer, but also uses electrical cable, mainly copper cable.

Java-Xiao Liu-Changsha : Is there anyone who knows how to build a website? I have a few questions to ask you. Tomcat is installed, but I can't display the web page when I enter IP:8080 in the browser. The address is the IP of the cloud server.

Java+Li Sai+Zhengzhou : Can't display the web page or is it the default page of Tomcat? Check if there is any abnormality, maybe it is the configured port 80.

VR-Xu Dengke-Shenzhen : It is difficult to quit playing Honor of Kings. Tencent is afraid that you will give up, so they will arrange a welfare bureau for you when you lose several games in a row. What function is used to write this welfare bureau after consecutive losses?

1>Linux Operation and Maintenance-Longying-Beijing : It is estimated that there is a judgment, and all the robots are arranged.

2> Android-Yangyang-Beijing : It is not a simple function. It will take into account your past record, winning rate, and score, because I have seen people lose more than ten games in a row.

.Net -ritter-Guangdong : Big data is all about Java, so is Microsoft's C# doomed?

Yida-Big Data-Guangzhou : I have never heard of C# being used for big data development. Maybe I am not well-informed. Most big data is developed in Java, and now many are using Scala, and many also provide Python interfaces. However, most of the underlying implementations are in Java and Scala.

Android-arige-Beijing : Why are people unwilling to develop WP applications?

Development-Jun-Beijing : Because Microsoft only provides services to Nokia, other manufacturers do not cooperate with Microsoft.

Cloud Computing - Cainiao - Suzhou : Do all interfaces have instruction sets? But when I searched for instruction sets on Baidu, they all said CPU instruction sets, but this is not the CPU.

1> Shit shoveling officer ~ Project manager ~ Beijing : Most of them have. You can check the interface documentation.

2> vba-small element-Yunnan : The CPU instruction set should be simply said to be a set of commands accepted by the hardware, also known as the central processing unit.

3> Cloud Computing - Enwei - Chengdu : CPU is a chip with specific functions, which contains microinstruction sets. The software we use must be processed by the instruction set inside the CPU. The design of these instruction sets is mainly divided into two design concepts, which are the two main types of CPU instruction sets commonly seen in the computer industry: Reduced Instruction Set Computer (RISC) and Complex Instruction Set Computer (CISC) systems. In the sense of software, "instruction set" is actually a specification, a standardized assembly file format. It is stored in the logic circuit of the CPU. After the CPU fetches the instruction (format command), it inputs the instruction (a string consisting of 0 and 1) into the decoding circuit, and the decoding circuit generates various control (calculation) signals according to the description of the instruction set.

Common RISC microinstruction set CPUs include Sun's SPARC series, IBM's Power Architecture (including PowerPC) series, and ARM series. Common CISC microinstruction set CPUs include AMD, Intel, VIA and other x86 architecture CPUs. With the support of CPUs, virtualization technology has been able to develop well. For example, you must enable the vt technical parameters of Intel's CPU to run virtual machines. "Loongson"? Kirin? Domestic PC CPUs are not considered made in China. Domestic mobile CPU chips are considered to be MediaTek MTK. In Intel/AMD's x86 architecture, important microinstruction sets for multimedia, virtualization, power saving functions, etc.

Multimedia: MMX, SSE, SSE2, SSE3, SSE4, AMD-3DNow!

Virtualization: Intel-VT, AMD-SVM

Power saving function: Intel-SpeedStep, AMD-PowerNow!

64/32-bit compatible technologies: AMD-AMD64, Intel-EM64T

Do you still have questions about these solutions? Welcome to join the 51CTO developer QQ exchange group 312724475 for discussion.

Next event : August 9

Keywords : Android interface, App version support, server

Activity review : Aiti Tribe ***: Spark offline analysis dimension

The second issue of Aiti Tribe: Application and practice of big data in the medical field

The third episode of the Aiti tribe consultation: Analysis of Python's advantages in big data processing

The fourth episode of the Aiti tribe consultation: Application scenarios and functions of Java message queues

The fifth episode of the Aite tribe clinic: data collection and front-end application

The sixth episode of Aiti Tribe Clinic: How does machine learning judge emergencies?

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