Start the growth journey of Nuggets! This is the Nth day of my participation in the “Nuggets Daily New Plan·February Update Challenge”, click to view the event details This article briefly introduces the basic knowledge. There will be further extensions in the future. Characteristics of variables in js js variables are loosely typed. Variables can […]
Tag: der
Understanding linux file system/folder name explanation
The linux system is used by many code developers because of its efficient and direct underlying operations. When it comes to linux, everyone’s general impression is the dark terminal command line. Later, the ubuntu version with a visual desktop was developed based on the linux system. Everyone’s experience takes into account the intuitiveness of the […]
Two or three things about Compose: preliminary understanding
What is Compose? Compose is a tool library in the Jetpack series for building native Android interfaces. Jetpack is a series of libraries launched by Google to help developers standardize their code. Simply put, Use code to write UI, that is, declarative UI. The difference between declarative UI and imperative UI is that declarative UI […]
Element table secondary packaging is super detailed with code (attached form slot, header slot, single choice and multiple choice, automatic selection according to data)
Recently, I have been working in the background management system, and the search and form are used a lot. Based on the secondary packaging of the element table, it is as follows first picture parent component <div class=”content_main”> <div class=”search_card”> <wpform style=”margin-top:20px” :objForm=”objForm” :formData=”formData” @searchSubmit=”searchSubmit(val)” ></wpform> </div> <div class=”tableContent”> <wp_table ref=”mytable” :tableData=”pendingReviewdata” @rowClick=”rowClick” :headerColumns=”pendingReviewHeader” :sendHeight=”sendHeight”> […]
SAP ABAP planned order to purchase requisition MD14
Users feel that it is too troublesome to transfer planned orders to purchase requisitions one by one through MD14. Although MD15 can be batched, it also needs to be confirmed one by one. When business consultants can’t convince users to check out standard features, the pressure is on technology. After research, the function MD_PLANNED_ORDER_2_REQUISITION can […]
Java high concurrency programming – the principle of visibility and order
Atomicity, visibility, and order are the three major problems faced by concurrent programming. Java has solved the atomicity problem in concurrent programming through the CAS operation. This chapter introduces how Java solves the remaining two problems-visibility and order. CPU physical cache structure Since the computing speed of the CPU is much faster than the access […]
Echarts series dynamically renders multiple line charts/area charts
The series of Echarts dynamically renders multiple line charts/area charts 1. Dynamically set series according to the data (array) returned by the backend 2. Draw a graph based on the obtained multiple sets of series data Since there are so many charts encountered in the work, I can’t remember the configuration items every time I […]
Mean encoding MeanEncoder() calculation logic code
1. Import data: import numpy as np import pandas as pd from category_encoders import TargetEncoder, MEstimateEncoder import warnings warnings. filter warnings(‘ignore’) data_df = pd.read_csv()#add path data_df. head() Since the data has no categorical variables, a new categorical variable SalePrice1 is added for testing and running through the data data_df[“SalePrice1”]=pd.DataFrame(np.random.randint(0,2,size=(data_df.shape[0], 1)),columns=[‘test’]) data_df 2. MeanEncoder class definition […]
C++ self-service order program based on MySQL
One, system function 1. View menu details 2. Add dishes to the shopping cart 3. Remove the dish from the shopping cart 4. View my shopping cart details 5. Empty my shopping cart dishes 6. Menu administrator authentication 7. Admin option: add dishes to the menu 8. Admin option: delete dishes from the menu Note: […]
Understand Clang Module and Module Map syntax
Clang Module appeared around 2013, and it appeared to solve the disadvantages of header file inclusion in traditional C-based programming languages. It is also a technology that must be used in modern Apple platform software development. Understanding Clang Module will help us organize code structure, understand Xcode compilation process, optimize compilation speed, and locate compilation […]