Requirements: Keep the obtained Double type value to 2 decimal places without rounding Proposal: Precise number calculation and formatting with BigDecimal public static void main(String[] args) { double num = 14.5684; int decimalPlaces = 2; // Reserve 2 digits BigDecimal bd = new BigDecimal(Double.toString(num)); bd = bd.setScale(decimalPlaces, BigDecimal.ROUND_DOWN); // Keep 2 decimal places and do […]
Tag: retain
Address book (information retained after completion)
contact.h #pragma once #include<string.h> #include<stdio.h> #include<stdlib.h> #include<errno.h> //#define MAX 1000 #define DEFAULT_SZ 3 #defineMAX_NAME 20 #defineMAX_SEX 5 #defineMAX_TELE 12 #define MAX_ADDR 30 //option option enum Option { EXIT, ADD, DEL, SEARCH, MODIFY, SHOW, SORT, SAVE }; //People’s information typedef struct PeoInfo { char name[MAX_NAME]; char sex[MAX_SEX]; char tele[MAX_TELE]; char addr[MAX_ADDR]; int age; }PeoInfo; //Address book […]
python excel copy data retaining cell format (.xls.xlsx)
Recently, I helped a friend develop a function for dynamically passing data in excel based on conditions. It is very convenient to use pandas to read and generate, but one thing that is more troublesome here is that the original cell format must be retained. This operation is a little more troublesome. Below Summary of […]
vue dynamic routing switching refresh retains historical routing search condition data
Recently, a customer reported that our system after querying the list according to conditions and entering the details page and then returning to the list page, the page did not display the data he queried. Instead, entering the page always displayed the data queried according to unconditional queries. I hope we can query the list. […]
C# Example of numerical formatting method that dynamically retains decimal places – retaining two non-zero digits after the decimal point for rounding
C# Example of numerical formatting method that dynamically retains decimal places – retaining two non-zero digits after the decimal point for rounding 1. Function introduction 2. Code cases 3. Output results 4. Encapsulation extension method 5. Console call 6. Other method addresses 1. Function introduction 1. If the input number is an integer, the string […]
How to hide an element but retain its space (display:nonevsvisibility:hidden) in CSS?
Gathering sand into a tower, making a little progress every day ? Column introduction ? Hide elements but retain space ? `display: none;` ? `visibility: hidden;` ? Summarize ?Write at the end ? Column introduction Front-end Getting Started Tour: Exploring the Wonderful World of Web Development Welcome to the Front-End Getting Started Tour! If you […]
Java reads word and converts it to HTML format, retaining the style and format of the content
title: java reads word and converts it to HTML format, retaining the style and format of the content date: 2023-08-11 categories: rear end tags: File operations Summarize Java reads word and converts it into HTML format, retaining the style and format of the content pom dependency <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>3.15</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>3.15</version> […]
js only retains a certain attribute of the array object, merges public type data, selects tree structure data, and retains the name of each node
Hey, it’s Tuesday! looking forward to friday Article directory 1. js only retains a certain attribute of the array object 2. Merge data of common types 2. Select the data in the tree structure and retain the name of each node. 1. js only retains a certain attribute of the array object let data = […]
React 18 retains and resets state
Reference article Retain and reset state The state of each component is independent. Depending on the component’s position in the UI tree, React can keep track of which state belongs to which component. You can control when state is retained and reset during re-rendering. UI tree Browsers use many tree structures to model their UI. […]
Use openXML to write xlsx files, cell style, retain the last two decimal places and percentage style
sdfsdfsdfdffor record at will! Due to the company’s reporting requirements, multiple report xlsx files of the same format need to be merged into the same xlsx. The report headers are the same (the first three lines are the report headers), and the sheets are the same. Because the project is urgent, there are still many […]