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Continue writing to a file with max size in C++

I want to write to a text file with limited size (1KB for example) and when the file reaches the maximum size I want the first half ... ,9] the new file will look like: 4 5 6 7 8 9...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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481 views

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google sheets - Create an Query Formula

How can i create a query formula, if the user code in the "respostas" sheet is "1 ... /d/1GdL5psaLKDix7282AZXGvZJUlm7rfhU2x5KlKTjp6ig/edit?usp=sharing Thank you in advance...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Use gatsby-image's tracedSVG as the actual picture

TL;DR: Is it possible to use Gatsby's rendered tracedSVG from childImageSharp as the actual picture on your website? ... file and the images and the placeholders failed to load....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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675 views

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compact form of many for loop in C++

I have a piece of code as follows, and the number of for loops is determined by n which is known at compile time. ... question is whether one can write it in a more compact form....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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X-Content-Type-Options如何添加到响应头中？修改tomcat？

公司扫描出的漏洞，给出的修复方案如下修复方式为：响应中添加?"X-Content-Type-Options: nosniff?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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762 views

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Checkmarx Scan throw errors in jQuery manipulation methods

Checkmarx scans reports erros in jQuery methods like append(), html() and text(). Actual error: The application's ... occur in the previous checkmarx version 8.9.0.210 HF14....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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linux - futurebuilder has no instance in in flutter

body: FutureBuilder( future: taskList, builder: (context, snapshot) { if (!snapshot.hasData) { return Center( child: ... (length:2) of '_GrowableList' Tried calling: call(0)...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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719 views

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mysql - php dynamic dropdown not holding value after submission

I am trying to build php dynamic dropdowns for searching purpose. For example - search by min price and max price. Although it shows ... )) { include 'carlist.php'; } }else{.....}...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mac系统怎么安装基于APR的Apache Tomcat本机库

[main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent 在java.library.path:[/Users/muyuchen/Library/Java/Extensions:/Library/Java/Extensions ... 一直报这个错误，这个APR是啥啊？（新手一个）...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.6k views

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java代码分数段统计如何用表驱动方式来编写

这是我自己写的代码我觉得很差希望能优化下能用表驱动吗/ 输出的结果是统计年龄分布数据[ApproveCustomerEntity(area=null, fqzScore=null, ... ; list1.add(approveCustomerEntity6); System.out.println("统计年龄分布数据"+list1);...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.0k views

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c++ - Auto-Vectorization of Matrix Addition

I am trying simple matrix addition code to get auto vectorized. float A[100]; float A[100]; float C[100]; int n = ... I do to make it vectorized and what does this remarks mean ?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Condensed mutltiple if condition is equal to something in python

I try to select keys and values in a json file and calculate average values. If a key is equal to a ... == something conditions and calculate average values based on models ?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.6k views

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使用exceljs导出，本地没问题，打包后报错

使用exceljs导出，本地没问题，打包后报错刚开始的写法：报错：然后我又按照文档上面讲的照着文档的写法后：又还是报错：有没有大佬知道这个该怎么解决啊，该怎么写这个引入文档地址：https://github.com/exceljs/exceljs/blob/master/README_zh.md#%E5%AF%BC%E5%85%A5...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.0k views

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c++ - How to convert mutliple Matrix in Eigen to json with Jsoncpp?

I need to save my data in Eigen. I have some Matrix and other information that need to be save into json. But I cannot find any useful document. ... ,2,3],[4,5,6],[7,8,9]], // } }...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.2k views

1 answer

Node.js REST API to call other apis to push data to external systems

I am building an portal for our company for which the backend is a Node.js(Express) REST api using sequelize ORM and SQL ... this and how it can be achieved in Node.js, Express....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.4k views

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javascript中获取的视频是数组形式的，如何进行播放？或者如何进行转换后播放？

视频保存在aws s3中，和oss有些类似。现在想获取s3中的视频并进行播放，但调取接口，返回的视频格式是数组形式的，如下：请问，这样格式的视频我将如何进行播放？在网上查到的都是nodejs的相关内容，我需要的是网页上的javascript的处理方式。...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.4k views

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Mybatis 批量插入修改时返回自增主键

我的开发环境 pom 文件中 springboot 的版本号是 <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version ... 中的多个对象实例都能获取 iid 自增后的返回值要怎么做...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.8k views

1 answer

laravel - .htaccess 404 error with webp conversion in October CMS plug-in

Having difficulties with a third-party plug-in ("ResponsiveImages") in October CMS. The plugin converts images to webp. Some images are ... </h2> </a> </div> </div> </div>...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.4k views

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节流函数为什么，点击无效，监听窗口大小却有效？

网上抄来的节流函数两种触发方式一种是window.onresize = throttle(resizehandler, 100, 500); 第二种是<div class="cm-btn sub cp" ... ().getTime()); } window.onresize = throttle(resizehandler, 100, 500);...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.5k views

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element的messageBox，beforeClose中的逻辑

问题：为啥要在done();之后，设置instance.confirmButtonLoading = false;？？我试了试，done();是比instance.confirmButtonLoading = false;先 ... ，还设置instance.confirmButtonLoading = false;干啥呀？？ messageBox组件地址...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.8k views

1 answer

save created excel file to azure blob container. path issue

Using an Azure Function I create an excel file and I am trying to save it to my Azure Blob Container. The code to ... if that is the issue. Any help would be greatly appreciated!...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.4k views

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weex中的web组件设置宽高的问题

想做一个以weex为壳，用web标签引入外部网页的嵌套式app，在给web标签设置宽高的时候出现了问题三种设置宽高的方法，在电脑上运行的时候都能出现，但是一二种方法在weex官方的手机端weexplayground中测试就是空白，只有第三种写出具体宽高的能展示，但是我这个是个需要全屏展示的呀，写死宽高肯定是不行的，请问有什么解决办法吗...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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4.6k views

1 answer

java 爬虫解析问题

网址： https://gongshang.mingluji.com/beijing/name/华夏风情餐饮管理有限公司 css 1 String LastSecondRegisteredFund=document.selectFirst("li:nth-last-child(2) span[ ... 也就是第一个匹配不到，第二个可以上次倒着匹配还是可以的...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.7k views

1 answer

从html复制代码到Xcode12 之后，代码自动换行

从苹果的官方网站上，复制例子代码到xcode中，结果每次复制过来之后，xcode每行代码之间，都会给加1个空行，这个怎么不让加空行呢？...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.9k views

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sum of squares (4 values shaping a square) within a 2d numpy array. Python

I am looking to sum each 4 point combination in a 2d array that forms squares within the matrix in4x4 = np.array( ... my purposes, but maybe I am just configuring the kernel wrong....

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.7k views

1 answer

prerender-spa-plugin打包后的页面无法正常运行

prerender-spa-plugin打包后会根据routes中的参数生成多个文件夹及静态页面，但是，图片路径和css、js路径都不对...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.4k views

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css - Styling props not working, especially padding

I am still new to react-native and I have some troubles regarding the styling props of react-native. I created a ... about any help regarding my styling props. Thanks in advance!...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.2k views

1 answer

请问js字符串数组对象怎么转对象？

let list = "[{"name":"长度","list":["50","100","60"],"key":1},{"name":"颜色","list":["红色","蓝色"],"key":2}]" 如何转为数组对象...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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