文章整合

字符串格式化

在程序编写过程中，需要将数值型变量按照一定的格式转化为字符串变量，下面介绍一些基本格式转换的语句：格式化货币 string.Format '{0:C}',0.2 ; //￥0.20（英文操作系统下：＄0.20）该方法默认格式化小数点后面保留两位小数，如需保留一位或是更多，可以指定位数，截取时采用...
2022-07-07 08:06【还是要努力呀！】
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【STM32】STM32烧录程序后SWD无法识别器件的问题解决方法

当软件配置有问题时，会导致程序下载后，无法识别芯片的问题。需要对芯片进行擦除操作。一、硬件连线 1、使用USB转串口工具，连接STM32芯片的UART1引脚上，注意TX和RX顺序 2、将boot0引脚电平拉高二、软件下载地址： https://img blog.csdnimg.cn/2e8...
2022-07-07 08:08【GEEK.攻城狮】
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[email protected]能帮助我们快速拿到日志对象

如题
2022-07-07 08:10【qq_25243147】
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根据设备信息进行页面跳转至移动端页面或者PC端页面

代码如下： function browserRedict pcurl, moburl { let userAgentInfo = navigator.userAgent.toLowerCase ; let device = /ipad iphone midp rv:1.2.3.4 ucweb and...
2022-07-07 08:10【weixin_42178670】
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@Transcation的配置，使用，原理注意事项：

一。使用： @Transactional 注解可以作用于接口、接口方法、类以及类方法上，但是 Spring 建议不要在接口或者接口方法上使用该注解，因为这只有在使用基于接口的代理时它才会生效。 @Transactional 注解应该只被应用到 public 方法上，这是由 Spring AOP 的本...
2022-07-07 08:12【thoughtCodes】
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浅谈日志中的返回格式封装格式处理，异常处理

选型问题不谈，主要考虑info 级别的数据：一般信息：一般说来，我们都会上项目上封装一个返回异常类，用来包装信息。通常我们来说就是返回码和返回信息，这种最常见了。为了更好的检查问题，我们设计如下： 000000 业务成功 000001 业务失败等对于Msg信息呢：我们可以定义信息格式：或...
2022-07-07 08:12【thoughtCodes】
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Study summary of postgraduate entrance examination in July

7 The monthly record was written after a long time , Because you only turn on the computer once a week, a week has passed if you forget to write , I a...
2022-07-07 10:21【qq_ forty-two million one hundred and twenty thousand eight hun】
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Study summary of postgraduate entrance examination in August

mathematics Completed the series review and thus completed the first round of review of high numbers . Probability has finished the basic course ...
2022-07-07 10:21【qq_ forty-two million one hundred and twenty thousand eight hun】
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Study summary of postgraduate entrance examination in September

mathematics The probability handout completes Chapter 6, basic concepts of mathematical statistics Line generation finished the intensive course...
2022-07-07 10:21【qq_ forty-two million one hundred and twenty thousand eight hun】
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Study summary of postgraduate entrance examination in October

mathematics Completed probability handouts and linear algebra tutorial handouts Did 05,06 The real question Major courses Picking up the ope...
2022-07-07 10:21【qq_ forty-two million one hundred and twenty thousand eight hun】
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When there are pointer variable members in the custom type, the return value and parameters of the assignment operator overload must be reference types

Problem description ： For custom types that contain Pointer type member variable When , Assignment operator overload Time function Return ...
2022-07-07 10:21【qq_ forty-two million one hundred and twenty thousand eight hun】
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Study summary of postgraduate entrance examination in November

mathematics The real question 07 year 15 year During this period, I also did some wrong questions review of advanced mathematics and line gener...
2022-07-07 10:21【qq_ forty-two million one hundred and twenty thousand eight hun】
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01 use function to approximate cosine function (15 points)

Zhejiang University Edition 《C Language programming experiment and exercise guidance （ The first 3 edition ）》 Topic collection https://img blog.csd...
2022-07-07 10:21【qq_ forty-two million one hundred and twenty thousand eight hun】
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0x0fa23729 (vcruntime140d.dll) (in classes and objects - encapsulation.Exe) exception thrown (resolved)

When running the program 42 Row threw exception , But I will cpp If the file is put under another solution, there will be no exceptions / include...
2022-07-07 10:22【qq_ forty-two million one hundred and twenty thousand eight hun】
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The variables or functions declared in the header file cannot be recognized after importing other people's projects and adding the header file

problem ： After importing the corresponding header file , Still hint There is no matching function instance （ The environment is VS2017）： https:...
2022-07-07 10:22【qq_ forty-two million one hundred and twenty thousand eight hun】
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Use the fetch statement to obtain the repetition of the last row of cursor data

Problem description ：《MySQL Will know 》 Medium P179 After the execution of the stored procedure, a row is repeatedly inserted in the new table ...
2022-07-07 10:22【qq_ forty-two million one hundred and twenty thousand eight hun】
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Review of the losers in the postgraduate entrance examination

Two years of postgraduate entrance examination passed in a flash , When I learned that my adjustment was over , Know that this journey needs ...
2022-07-07 10:22【qq_ forty-two million one hundred and twenty thousand eight hun】
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A small problem of bit field and symbol expansion

annotation ： Bit field ： Some information is stored , It doesn't take up a whole byte , Only a few or one binary bits are required , For example,...
2022-07-07 10:22【qq_ forty-two million one hundred and twenty thousand eight hun】
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Some properties of leetcode139 Yang Hui triangle

Yang Hui triangle has special properties 1. Each line of numbers is symmetrical from 1 Start getting bigger and smaller , And finally back to 1. 1...
2022-07-07 10:22【qq_ forty-two million one hundred and twenty thousand eight hun】
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Sword finger offer 38 Arrangement of strings [no description written]

subject Enter a string , Print out all the permutations of the characters in the string . You can return this array of strings in any order , But...
2022-07-07 10:22【qq_ forty-two million one hundred and twenty thousand eight hun】
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