Infinitely large constant INF

#define INF 0x3f3f3f3f 0x3f3f3f3f decimal is 1061109567, that is, 10^9 level (and 0x7fffffff (32-bit int maximum) an order of magnitude), and the general situation of the data are less than 10^9, So it can be used as infinity without the case that

How to find the data stored in Ceph

Ceph's data management begins with the Ceph client's write operation, and since Ceph uses multiple replicas and strong consistency policies to ensure data security and integrity, a write request data is written to the primary OSD first and then

The use of Neural network toolbox in MATLAB

I ask Xi Xi, a few days ago to play with a bit of MATLAB in the use of Neural network toolbox, and suddenly there is "palpable" the sense of the well-being. The other is nothing, but the data structure of the neural network is a bit "weird", if

Performance analysis of small table and large Table association (join) in Hive ZZ

In fact, the recommendation of the hive optimization is that the large table is placed behind when the multiple tables are associated, because the previous association results are put into memory. However, Bo main article itself is also good to

Read the final consistency solution for reliable messages (standalone messaging service)

Preface In the last study, "reliable message final consistency solution" (local messaging service) I introduced the final consistency of distributed transactions through the local messaging service, and finally the pros and cons of this

Swiperefreshlayout and Bannerview Carousel Conflict Resolution

Swiperefreshlayout and Convenientbanner AD Carousel event conflict resolution Look at the layout, analyze the layout, this layout is very regular home layout, a swiperefreshlayout drop-down to refresh the package with a head of the ListView. Where

ETL Sharp Weapon Kettle Practical application

The main indexes of this article series are as follows: First, ETL sharp weapon Kettle Practical Application Analysis Series one "Kettle Use introduction" Second, ETL sharp weapon Kettle Practical Application Analysis Series two "application

Parsing HTTP request URL length and message body lengths

The HTTP 1.1 protocol does not limit the length of the URL, as follows: The HTTP protocol does not place any a priori limit on the length of a URI. Servers must is able to handle the URI of any resource they serve, and should is able to handle URIs

The realization and optimization of x264 's Hada transform (Hadamard)

Hadamard Transformation Theory A lot of pages have been introduced, I will not copy, to two links. The following is a section of the Hada transformation in the "Computer image processing analysis" Courseware of Harvey Mudd College. (JASON

WEBRTC demo in the browser

WEBRTC in the Chrome browser demo Many examples, WebRTC source, but in the Firefox browser, the example can not be used, the information on the web said to set the media.peerconnection.enabled to True, However, in the Firefox browser, the default

Break, continue, return usage in a looping statement

Using the break exit loop, you can forcibly exit the loop using the break statement, ignoring any other statements and loop condition tests in the loop body. When a break statement is encountered in a loop, the loop is terminated and program control

int Av_packet_ref (Avpacket *dst, const avpacket *SRC) Source analysis

Transfer from http://blog.csdn.net/fernandowei/article/details/50492815 In the front, literally speaking, this function is just to produce a avpacket reference (reference); Personally, this function can help you to a certain extent, I understand

The meaning of training sets, validation sets, and test sets

Original In supervised machine learning, it is often said that training sets (train), validation sets (validation), and test sets (tests), the distinction between the three sets can be confusing, and in particular, some readers do not know the

Gitlab installation process and how to modify the default port

工欲善其事, its prerequisite. This article describes the installation process of Gitlab. Need to have a certain degree of English reading ability. Installation Environment: Ubuntu:ubuntu 17.04 Official recommendations required hardware conditions:

The pseudo-instruction of assembly language programming label and this

First talk about some of your own understanding: from a high-level language of the basic say In high-level languages, we sometimes initialize the property settings for a segment of storage space, such as the initial access to the storage space is

Research on STM32 independent watchdog IWDG and window watchdog WWDG

Research on STM32 independent watchdog IWDG and window watchdog WWDG Daniellee_ustb 2014-9-25 1. Watchdog introduction The watchdog thing is simple, but I believe most programmers don't pay enough attention to it. It is necessary to use the watchdog

Summary of concepts and usage methods of STRANGEIOC framework in Unitymvcs (detailed version)

Recently wanted to use this architecture in the project so I read a lot of information on the Internet to explore but for beginners, most of the information is not so easy to understand and the document is also English reading a little difficult to

The pain of programming beginners

As a freshman, computer science is my first volunteer, starting from third day, I dream that one day I can learn to program, so in high school, that the most hazy era, I study a little C + + knowledge of their own interest, due to the pressure of

MyBatis Configuration Step Pit

MyBatis version 3.4.6 Mysql-connector version: 6.0.6 Error: Loading class ' Com.mysql.jdbc.Driver '. This is deprecated. The new driver class is ' com.mysql.cj.jdbc.Driver '. The driver is automatically registered via the SPI and manual loading

Sumsang Uboot Analysis Very Good article

Sumsang Uboot Analysis Very good article, so I decided to reprint, Good article spread and save. https://www.cnblogs.com/xiaojiang1025/p/6496704.html from 0 transplant uboot (ii) _uboot start-up process Analysis After the configuration of the

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