1 Introduction Hello everyone, I am Ruochuan. I have devoted myself to organizing source code sharing for more than a year. If you are interested, you can add me on WeChat lxchuan12 to participate. In addition, if you want to learn source code, I highly recommend paying attention to my column “Learning the Overall Architecture […]
Tag: pen
Opencv geometric space transformation: resize(), transpose(), flip(), warpAffine(), rotate(), warpPerspective()
1. Zoom resize() resize() can reduce or enlarge the image size dst=cv2.resize(src, dsize[, dst[, fx[, fy[, interpolation]]]]) src: source image; dsize: The size of the target image after zooming. If it is set to 0, the target image will be obtained by multiplying the size of the source image by fx and fy; dsize has […]
SpringBoot integrates Redis, and understanding of cache penetration, cache avalanche, cache breakdown, how to add locks to solve the problem of cache breakdown? How to add distributed locks in distributed cases
Article directory 1. Steps 2. Specific process 1. Introduce pom dependencies 2. Modify the configuration file 3. Unit testing 4. Test results 3. Redis running status 4. Practical application in the project 5. Locking solves the problem of cache breakdown Code one (there is a problem) Code two (problem solving) 6. New questions 7. Distributed […]
Empty folders cannot be deleted and cannot be opened, “The item does not exist, please confirm the location of the item”, “The item is being opened and cannot be deleted”, “The file is damaged or has been moved and deleted” (multiple methods with graphic explanations, details Need to pay attention, and possible problems)
1. Preliminary summary – the situation that triggers this folder This file or folder that cannot be deleted is actually an ancestral bug of the Windows system that has not been fixed so far, so we need to deal with it through special means. Listening to my slow talk about his reasons may be helpful […]
OpenCV measures the distance of objects in the image
Note that this is not the distance measurement of the binocular camera~~ Calculating the distance between objects is very similar to computing the size of an object in an image – it starts with a reference object. We’ll use 0.25 cents as our reference object, which has a width of 0.955 inches. And we also […]
Java’s reflection mechanism and spring framework’s IoC (inversion of control) and DI (dependency injection)
java’s reflection mechanism and spring framework’s IoC and DI Overview of java reflection mechanism: Advantages of Java Reflection The Java reflection mechanism is widely used in the following scenarios: Java reflection mainly involves the following classes and methods: Class class: Indicates the type of a class, and various information about the class can be obtained. […]
python operation excel (openpyxl, xlrd&xlwt)
Table of Contents Compare xlwt, openpyxl, xlrd icon Measured xlrd & amp;xlwt read and write operations Install read operation write operation Excel time processing xldate_as_tuple xlrd. xldate_as_tuple(xldate, datemode) xlrd.xldate.xldate_as_datetime(xldate, datemode) openpyxl read and write operations openpyxl read to write Compare xlwt, openpyxl, xlrd Icon To quote someone else’s picture: xlwt does not support writing xlsx […]
Intranet penetration and post-exploitation [Network Security]
0x01 Tool Introduction Tool principle The main principle of Mimikatz is that after the user logs in in the Windows system, the system will store the identity credentials in the memory of the lsass.exe process, and Mimikatz reads it by injecting the lsass.exe process Process memory, from which the corresponding plaintext password is obtained. FAQ […]
OpenAI loses another “king bomb”: ChatGPT “seal” is lifted, and it can be connected to the Internet and searched!
Organize | Tu Min Zheng Liyuan Produced | CSDN (ID: CSDNnews) “Scattered flowers gradually become charming eyes”, in the new day, OpenAI once again throws out the “king bomb”: ChatGPT launched a plug-in function, which can not only connect to the Internet, but also open the search, and can also execute code and run calculations… […]
Docker turned around and suspended accounts, forced fees, and no longer open source!
Click “Developer Technology Frontline” and select “Star” Let some developers see the future Author | Wang Ruiping From: 51CTO technology stack A few days ago, Docker Hub had a big event! Anyone who created an “organisation” received an email with a short PDF link. The content of the email is full of “money”: if you […]