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Category: OS

Operating System (Operating System, referred to as OS) is a computer program that manages and controls computer hardware and software resources. It is the most basic system software that runs directly on the “bare metal”. Any other software must be supported by the operating system to run .

How to update my Nginx with Yum in Centos 7

I used yum install nginx on my ECS server, but the version is not high enough to support http2. After Google search, I added a configuration file:

/etc/yum.repos.d/nginx.repo With content:

October 15, 2021By Simo Centos centos, How to, my, nginx, up, Update, YumLeave a Comment

[Data Structure] HASH Table

[Data structure] Hash table Hash table is also called a hash table, which is a linear data structure. In general, the time complexity of o(1) can be used to add, delete, modify and check data. In

October 15, 2021By Simo Data Structure Data Structure, haveh, tableLeave a Comment

What video coding and streaming media services have there?

I’m looking for something, I can directly embed their uploader or send a video file and then encode the video, and allow me to stream the video through the player on the “my” website .

The se

October 15, 2021By Simo Character Coding, Flow, media, service, Video, whichLeave a Comment

[Data Structure] Maintenance Queue

T69293 maintenance queue topic description Alice gave Bob has arranged a lot of work. He is so busy that he decides to process these tasks in a “first in first out (FIFO)” order. But in the process

October 15, 2021By Simo Data Structure Data Structure, Maintenance, queueLeave a Comment

Coding style – confusion with Uncle Bob About Null Objects in Cleaning Codes in Cleaning Codes

I am reading Uncle Bob’s book on exception handling today, and what I can recall from handling null values ​​is that methods should not handle null values ​​because it will mess up the code. I’m a

October 15, 2021By Simo Character Instead, puzzlingLeave a Comment

Install GMP on CentOS

I tried to install GMP on CentOS, and I got this error:

yumdownloader –source gmp
Enabling mysql-tools-community-source repository
Enabling mysql-connectors-community-source repository
Enabl

October 15, 2021By Simo Centos centos, GMP, installationLeave a Comment

[Data Structure] Implementation and Stack of Size

Heap generally refers to a binary heap, the structure is as follows

The number inside the circle refers to the subscript, and the content outside the circle, as shown in the figure, cannot be

October 15, 2021By Simo Data Structure Data Structure, heap, large, realization, small pile, SORTLeave a Comment

“Data Structure” experiment 1: Flexible use of VC programming tools

“Data Structure” Experiment 1: Flexible use of VC programming tools One. .Experimental purpose

Review and consolidate the use of VC programming environment and C++ template design.

1. R

October 15, 2021By Simo Data Structure Data Structure, experiment, First, flexible, one, part, programming, tool, use, VCLeave a Comment

How to insert a specific symbol in the QT widget

I want to make buttons with specific mathematical symbols, such as square root, delta, sigma, pi, etc. How to do this? I am using Qt 5 and unicode. Thank you Just need any Unicode documentation a

October 15, 2021By Simo Character How to, INSERT, Medium, part, QT, specific, symbolLeave a Comment

[Data Structure] Red Black Tree and Jump Table – (Sortset) – (TreeMap) – (Treeset)

SortSet

An ordered set is actually TreeSet in Java is the only implementation class of SortSet, which is implemented internally through TreeMap; while TreeMap is implemented through red-black

October 15, 2021By Simo Data Structure black, Data Structure, Jumping, red, Sortset, table, Tree, Treemap, TreesetLeave a Comment

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