Windows - Help with Java high-precision operation problems

The company's projects required a lot of high-precision operations. At first, we used double-type operations. Later, we found that the accuracy of some values ​​exceeded the ideal range after using double-type operations, so we used BigDecimal to calculate. The current problem is the operation effic...

typecho 2017-06-28 09:22:10 0  3  879

c - 陀螺仪的三轴角速度如何积分计算出角度

陀螺仪的三轴角速度如何积分计算出角度

某草草 2017-05-02 09:33:36 0  1  1362

How do you calculate $cup to be equal to 13 by computer calculation?

How is $cup calculated by computer to be equal to 13?

phpcn_u11218 2017-07-22 22:20:59 0  2  1503

python3.x - Problem with Python not operator

{Code...} {Code...} As above, False will be calculated as 0 when operated directly. When using the logical operator not, the value of not(1) is False or 0. But why does not(1) directly enter the arithmetic operation and then the result of recalculation is False? This is similar to Python's algorithm...

phpcn_u1582 2017-06-22 11:52:39 0  3  1257

Template ternary operator invalid

The ternary operator written after value does not respond, but replacing {$vo.title} with the ternary operator works. What is the reason?

  2018-09-27 23:42:17 0  4  1805

PHP operation method

<?php$x = 5;$y = 6$water = $y-- + $x--;echo $water;The result is 13. Don’t understand? Find the algorithm for operation = 13 $paper = ++$x + $x++;$water = $y-- + $x--;echo $water + $paper;?>

爱心传递 2019-07-22 15:08:13 0  1  1260

es6 Null conduction operator - es6 Null conduction operator

Ruan Yifeng How to use the Null conduction operator in es6. {code...}

某草草 2017-05-19 10:30:39 0  2  1586

Bit Operations - Why ~8=-9, ~-8=7 in javascript?

After studying the relevant information on bitwise operations in JavaScript, I really don’t understand the inverted bitwise operation. I don’t understand why the inverted bitwise operation is not the maximum number - the current value, but ~8=-9, ~-8=7?

滿天的星座 2017-05-18 10:59:22 0  5  977

javascript - Questions about JS ternary operator

Why does the result of using string concatenation operator in ternary operator remain unchanged when the condition changes? {Code...} {Code...} However, removing the string concatenation operator and the string before the ternary operator returns to normal {Code...} {Code...} Solution?

天蓬老师 2017-05-19 10:17:40 0  3  598

javascript - Is... in the following code a spread operator or an operation operator? What does it mean to write like this?

Code in vuex {code...} What does... in front of mapState mean? What is the difference between adding this and not adding this? I have seen the relevant documentation of the spread operator and the operation operator, but I still don’t quite understand it. I would like a more detailed explanation. .

漂亮男人 2017-06-26 10:52:17 0  3  875

How to standardize the operation of two fields in laravel5.5 where condition?

laravel5.5 How to standardize the operation of two fields in where condition?

天问 2018-09-14 16:43:41 0  3  1322

javascript - js arithmetic problem, solve it~~

"1"- -"1"; The result of the above operation is 2. If you omit the space in the middle, an error will be reported. If there is a space, the result will be 2. Can someone please analyze why? Thanks~~

大家讲道理 2017-05-19 10:37:30 0  5  474

javascript - An assignment operation problem

var a=0;b=(a=3)+(a=4);alert(a);alert(b);The result is a=4,b=7. I would like to ask, why is a 4? The assignment operation is from Right to left?

phpcn_u1582 2017-06-26 10:55:04 0  5  822

云计算 - 如何获取docker容器的瞬时io速度？

例如启动容器A（不挂载目录），如何在物理机上查看该容器的io速度？ docker stats 命令并不起作用，其输出中的I/O信息是累计大小，而不是速度。

世界只因有你 2017-04-27 09:01:45 0  1  650

What's going on with JavaScript's OR operator?

Shouldn't the || operator return true or false? Why does JavaScript return an object? What's going on? Can someone help explain it?

扔个三星炸死你 2017-06-12 09:29:40 0  2  676

How fast is fs.readdirSync? Can I speed it up?

I have a function that recursively gets all the files in a directory using fs.readdirSync. It worked fine with the small directory I ran it as a test, but now I'm running it on a directory that's over 100GB and it takes a long time to complete. Any ideas on how to speed this up or if there's a bette...

P粉064448449 2023-09-04 19:48:56 0  1  593

Problem with es6 spread operator...

I can understand the expansion operator for copying arrays, but I don't understand how it is used to pass parameters to functions. As mentioned above, why can a function parameter accept several parameters after adding the expansion operator? {code...}

高洛峰 2017-07-05 10:41:47 0  8  951

Calculate the time complexity and space complexity of a program

Can you explain how to calculate the time complexity and space complexity of a program based on a specific algorithm (such as a sorting algorithm)?

Dream（☆_☆） 2019-10-17 22:02:47 0  2  1093

Search Json objects using "AND", "OR" operators

I have a problem where I need to search a JSON object using conditional operator strings. The JSON object looks like letData=[{Application:'APIM',Owner:'VandeMataram','CustomerCode':'DJLFKASJF',Environment:'Dev',OS:'Linux',Region:'EU','TEAM' :'DemoTestCOE'},{TEAM:'BCC'},{Team:'D

P粉029327711 2023-09-06 10:23:16 0  1  623