Article Introduction：This tutorial explains the concept of absolute value and demonstrates practical Excel applications of the ABS function for calculating absolute values within datasets. Numbers can be positive or negative, but sometimes only positive values are neede

2025-04-06 comment 0  688

Article Introduction：Understanding Absolute Value: The concept of absolute value in Excel is pivotal for unbiased data analysis, as it represents the non-negative value of any given number.ABS Function Syntax: The ABS function in Excel is straightforward, requiring only

2025-05-19 comment 0  324

Article Introduction：The absolute value symbol in C language is abs(), which converts the parameter to an absolute value of a non-negative number. The usage is as follows: include <stdlib.h>int abs(int number);abs() function receives an integer parameter and returns its absolute value.

2025-04-04 comment 0  1022

Article Introduction：What is Abstract Factory Pattern? Abstract Factory Pattern is a creational pattern that provides an interface for creating families of related or dependent objects without specifying their concrete classes. When to use it? Use Abs

2024-11-21 comment 0  288

Article Introduction：This article discusses methods to calculate the absolute value of a number in Microsoft Excel. It introduces the ABS function, along with alternative approaches using the IF, ROUND, and SIGN functions. A specific formula to obtain the absolute value

2024-12-09 comment 0  648

Article Introduction：Commonly used numerical functions include ABS(), ROUND(), CEIL(), FLOOR(), POWER(), SQRT(), and SIGN(), which are used to perform basic mathematical operations; aggregate functions such as SUM(), AVG(), MIN()/MAX(), and COUNT() are used for statistical calculations; when using it, you need to pay attention to the impact of data type, NULL value processing and rounding differences. For example, ABS(-100) returns 100, ROUND(123.4567, 2) returns 123.46, FLOOR(123.99) returns 123; the aggregation function is often combined with GROUPBY to analyze grouped data; INT division may truncate decimals, and NULL requires C to participate in the calculation

2025-07-30 comment 0  525

Article Introduction：Buy Me a Coffee☕ *Memos: My post explains pow(). My post explains float_power(). My post explains abs() and sqrt(). My post explains gcd() and lcm(). My post explains trace(), reciprocal() and rsqrt(). square() can get the 0D or more D tens

2025-01-03 comment 0  638

Article Introduction：Buy Me a Coffee☕ *Memos: My post explains square(). My post explains float_power(). My post explains abs() and sqrt(). My post explains gcd() and lcm(). My post explains trace(), reciprocal() and rsqrt(). pow() can get the 0D or more D ten

2025-01-01 comment 0  500

Article Introduction：Floating point numbers are inaccurate is a common problem in PHP. The answer is that it uses IEEE754 double-precision format, which makes decimal decimals unable to be accurately represented; numbers such as 1.0.1 or 0.2 are infinite loop decimals in binary, and the computer needs to truncate them to cause errors; 2. When comparing floating point numbers, you should use tolerance instead of ==, such as abs($a-$b)

2025-07-29 comment 0  221

Article Introduction：The greatest common divisor can be calculated by turning phase division in C language, and the Euclidean algorithm is used to continuously obtain the remainder until the remainder is 0, and the last divisor is the greatest common divisor. For the stack overflow risk in recursive code, iterative implementation can be used, and the remaining calculation is continuously performed using loops, and the greatest common divisor can also be obtained. In addition, considering negative number processing, the code can be further optimized and the abs() function can be used to convert negative numbers into positive numbers to enhance the code robustness.

2025-04-04 comment 0  628

Article Introduction：Calculating the number of days between two dates in SQL can be achieved through built-in functions of different databases. 1. MySQL and SQLServer use DATEDIFF(end_date, start_date) function to obtain the difference in the number of days, and the result is end-decreasing start. If the positive value is required, you can use ABS() to wrap it; 2. PostgreSQL directly subtracts the two date fields into date types and directly subtracts (end_date::date-start_date::date) to avoid partial interference of time; 3. Oracle can use TRUNC(end_date)-TRUNC(start_date) to remove partial shadow of time

2025-06-29 comment 0  568

Article Introduction：LoRA (Low Rank Adaptive - arxiv.org/abs/2106.09685) is a popular technology that is cost-effective and fine-tuned large language models (LLM). But in 2024, a large number of new parameter efficient fine-tuning technologies emerged, and various LoRA alternatives emerged one after another: SVF, SVFT, MiLoRA, PiSSA, LoRA-XS?... Most of them are based on a matrix technology that I really like: Singular Value Decomposition (SVD). Let's dive into it in depth. LoRA The initial insight from LoRA is that all weights of fine-tuning models are over-operated. Instead, LoRA freezes the model and trains only a pair of small low-rank "adapters" matrices. See

2025-03-14 comment 0  1119

Article Introduction：Use the DateTime class to calculate the remaining days: get the DateInterval object by creating two DateTime objects and calling the diff() method, and then extract the days therein; 2. Use timestamp subtraction: convert the date to a timestamp and subtract it by using strtotime(), and use abs() to avoid negative values, and finally convert it to an integer number of days; 3. Consider the impact of time zone and daylight saving time: Specify the time zone of DateTime to ensure accuracy, especially when changing across daylight saving time, which may affect the number of hours. These three methods can meet the requirements for remaining days calculation in most PHPs.

2025-07-07 comment 0  320

Article Introduction：Razer launches the new Basilisk Mobile and Joro gaming keyboards, designed for mobile gamers. The Joro keyboard is small, but it comes with a full function key row and full-size arrow keys, providing a familiar and comfortable layout. The low button design helps maintain ergonomic hand posture and reduces fatigue caused by long-term gaming. Joro uses game-level keys to ensure fast and accurate key response and satisfying feedback, and enhances durability with durable UV-coated ABS keycaps. For competitive players, Joro also comes with Snap Tap mode, which improves first-person shooting game by allowing faster input between two keys without releasing the first key

2025-05-11 comment 0  513

Article Introduction：Python's built-in functions are functions that can be used directly without importing modules. They are divided into three categories: type conversion, mathematical operations, and object operations. ① Type conversion functions include int() to convert strings or floating-point numbers into integers, str() to strings, list() and tuple() to iterable objects, float() to float type, but illegal conversion will report errors and need to be handled in conjunction with exceptions; ② Mathematical and comparison functions include abs() to take absolute values, round() round, min()/max() to find the minimum maximum value, sum() to sum elements, which is suitable for data analysis and algorithm writing; ③ Object and structure operation functions such as len() to obtain length, type() and isinstance()

2025-07-09 comment 0  1048

Article Introduction：In PHP, the most recommended way to calculate the hour difference between two times is to use the DateTime and DateInterval classes. First create two DateTime objects, then call the diff() method to obtain the DateInterval object, then convert the days into hours and add the hour part; 1. Use DateTime and DateInterval: the code is clear and easy to maintain, suitable for scenarios that require high readability and precise control; 2. Use timestamps to directly calculate the difference: obtain the timestamp through strtotime(), which is suitable for situations where the date format is not high, but you need to pay attention to using abs() to avoid negative values, and choose round(

2025-07-14 comment 0  318

Article Introduction：std::complex is used to simplify complex operations in C. 1. It needs to include header files; 2. It can use std::complex (real part, imaginary part) to create complex numbers; 3. It can support basic operations such as , -, *, /; 4. Access the real imaginary parts through real() and imag(); 5. Use abs() to find the modulus, arg() to find the amplitude angle, norm() to find the modulus square; 6.conj() returns conjugated complex numbers; 7.exp() can verify the Euler formula with imaginary units; 8.polar() function can create complex numbers from polar coordinates. This template avoids manual implementation of complex operations and is widely used in fields such as mathematics and signal processing.

2025-08-26 comment 0  474

Article Introduction：Calculating percentage growth in Excel is a critical skill, especially for those engaged in business analytics, financial modeling, and data management. Mastering the right formulas can turn raw data into valuable insights that help us identify trends, make suggestions for improvements, and make informed decisions. In this guide, I will explore a variety of formulas for achieving accurate percentage growth calculations and explain them in combination with actual cases and advanced techniques. Core points: Use =((new value - old value) / ABS (old value)) * 100 to calculate the base percentage growth. Apply the CAGR formula to evaluate long-term growth trends. Year-on-year growth provides annual performance insights. Correctly format the cell to avoid misunderstanding of the results. Leverage Excel shortcuts and tricks

2025-09-17 comment 0  1029

Article Introduction：Recently, some friends wanted to understand the commonly used function formulas in Excel, so the editor specifically studied them. Now let’s share with you the commonly used formulas in Excel. I wonder if you have noticed what you often need to use in daily work in the Excel function formulas? Maybe many people don’t know it very well! It doesn’t matter, the editor has already sorted it out for you, so hurry up and take a look! Number processing: 1. Obtain the absolute value = ABS (numerical value) 2. Round = INT (numerical value) 3. Round = ROUND (numerical value, decimal digits) Statistical formula: 1. Statistical formula for counting the repeated data in two tables: B2=COUNTIF (Sheet15!A:A,A2) Description: If return

2025-09-05 comment 0  756

Article Introduction：Calculate the minute difference between two times in PHP by the following methods: 1. Use DateTime and DateInterval: Create two DateTime objects and call the diff() method to get the interval, and then convert it into minutes. It is suitable for scenes with span of days and clear logic; 2. Use timestamp subtraction: Use strtotime to convert to timestamp and calculate the difference and get the absolute value, which is suitable for quick and easy calculations, but pay attention to format and time zone issues; 3. Handle time zone differences: Use DateTimeZone to explicitly define the time zone and convert it to the same time zone for comparison to ensure the accuracy of the real time difference; In addition, it is recommended to use the abs() function when processing negative results, and at the same time the input format is also

2025-07-04 comment 0  391