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while ((len = read(fd, buf, sizeof(buf))) > 0) { int ret = write(connect_fd, buf, len); if(ret == -1 && errno == EAGAIN) { printf(" ... } if(flag == 1) { break; } } 请问这种情况我应该如何处理？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Echarts 多语言切换

有大神知道ECharts里面如何进行多语言的切换吗？我现在知晓的是可以通过 $.getScript 来动态加载脚本以达到切换语言的目的。想知道，ECharts内部，是否已经有封装好的快速切换语言的方法？如果有知道的大神，帮忙告诉下！...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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556 views

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遍历深层次的对象然后替换其中的属性有什么比较好的思路吗？

我的想法是"xxx.xxx.xxx"这样的路径字符串然后使用split('.')获得数组，根据数组来进行深层的遍历 let paths = path.split('.'), len = paths.length, node = ... ]]; } node[paths[len - 1]] = newVal; 代码如上有什么更加优美的处理方法吗...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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visual studio code - Automatically start/stop webserver in vscode debug

When debugging a web project, it needs to be built, served by a webserver, and opened in a browser, with a ... seems quite convoluted and dirty. Is there really no better way?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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394 views

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python - Problem with getting reproducible results, set seed Tensorflow object detection API

I am using object detection API with tensorflow v1.12. I am having troubles getting reproducible results ... models/research/object_detection/2020_22_12_test/data/eval.record" } }...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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关于c++里new和delete[]的问题

我花了两个多小时才调试它并检查代码错误但是我仍然找不到它崩溃的原因如果删除第91行到第93行之间的代码，则源代码将能够在vs和vscode中运行，但在dev-c中失败 dev-c的反馈是程序接收到的信 ... i++) { cout << raCopy[i + firstI] << " "; } system("pause"); return 0; }...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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data must be a remote dolphindb table or dict or DataFrame

请问一下如下图所示这个报错是什么原因呀?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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前后端分离，前端如何保存登录信息

有大大佬解释下吗...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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505 views

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解决美国服务器不稳定的办法有哪些？

解决美国服务器不稳定的办法有哪些？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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184 views

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echart地图如何只显示一个地名

echart地图，怎么样才能只显示一个地名就是除成都外所有地名全部隐藏掉，但是点和线还得留着。百度了一下没有找到怎么解决...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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622 views

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vue中的main.js执行了两次，可能引起的原因是什么呢？

打开浏览器控制台可以看到main.js中的那个打印其中一个是在VM27677 main.js文件中(详见下图)，但这个以VM开头的文件最开始控制台显示就是main.js，后来闪了一下就变成以VM开头的了过了一会 ... :///VM40624 main.js:30 当光标放到正常的那个文件名上时显示的是 webpack:///main.js:30...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Android RecyclerView Width wider than Screen

I am setting up a RecyclerView with CardViews. However, the CardViews are extending to the right side of ... ="parent" /> </androidx.constraintlayout.widget.ConstraintLayout>...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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怎么使用electron-builder在打包Linux系统上打包出.deb安装包？

我想在linux系统上把自己的electron-vue项目打成.deb包，但是electron-builder原始的配置只能打出.AppImage这个文件，这个文件是一个直接执行文件，并不会把应用安装到电脑上。请问我怎么配置package.json才能打出.deb的包呢。求大神指点！！！附上package.json配置图：...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python 类属性类型为字典时候值有问题

代码如下 class Point: dic = {} def __init__(self, x=0): self.dic[x] = x pt1 = Point(1) print(pt1.dic) pt2 = Point(2) print(pt2.dic) 他的打印结果是 {1: 1} {1: 1, 2: 2} 这里pt2对象为何受到了pt1对象的影响?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Socket.io connection error react native expo

Expo app not connecting to socket server, socket.connected is always false I have tried to downgrade socket.io-client version ... ['websocket'], jsonp: false, forceNew: true, });...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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forever 如何监听服务停止并自动重新启动呢

之前一直是forever start xxx.js来启动某个服务；今天看有个服务自己STOPPED了，不知道什么原因， forever能不能像docker那样会自动监听服务运行情况，服务停止就自定重启呢？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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645 views

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How to randomly position widgets in a layout in flutter

Lets say I want to randomly position the widgets in a specific layout, like in the image attached below, how could I achieve it ... (16, Colors.black, FontWeight.w700), ) ], ); }...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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table合并代码没搞懂里面的变量问题

<template> <div> <center> <table border="1"> <thead> <tr> <th>序号</th> <th>项目</th> <th>分类</th> <th>分项</th> <th>现场管理</th> < ... 有 this.tableData 里面没有那么多数据，但是打印的时候就莫名其妙的跑出很多属性，这是为什么？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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azure data factory - Datafactory pipeline status query randomly returns wrong status

We use following line to query azure datafactory pipeline run status (V2 datafactory): var pipeline = InnerClient. ... did trigger problems when the status was retrieved wrongly....

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How i supposed to show listView in fragment class with adapter from another class

Hello i have this problem, i am new to this.I try to show my list in fragment. My app is running, but when i go ... , and try to study this.. Can someone explain my mistake here ?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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使用Spring Cloud有什么优势？

使用Spring Cloud有什么优势？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Odoo11: Create module inside addons not showing and left sidebar odoo not showing on my custom app

I have two question. I've tried to create a new addon inside main addon (path: odoo10.0/server/addons) but it ... so far there's no good documention I could possibly understand....

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Is it possible to make a `useIsAnimating` hook in React?

So I have a feature in my React app where it would be incredibly useful to know if an element is animating/going through ... ); }; }, [ref, setIsAnimating]); return isAnimating; }...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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使用mint-ui的组件，infinite-scroll，报错Failed to resolve directive，怎么解决呢

Failed to resolve directive: infinite-scroll...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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301 views

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java - I want to have just one key as the input of init method in cipher when encrypting by changing the algorithm

I am using init method in Cipher class and I have two keys as input but I want to have just one key the algorithm ... /CBC/PKCS5Padding" how can I do that ?? thanks for answering...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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706 views

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element表格在火狐浏览器滚动条问题

问题描述在使用elementUI对话框会显示底层表格的滚动条并且滚动条可以拖动问题出现的环境背景及自己尝试过哪些方法相关代码粘贴代码文本（请勿用截图）你期待的结果是什么？实际看到的错误信息又是什么？对话框出现表格滚动条不可拖动...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.3k views

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html5 调用微信jssdk 没有调用相机，只显示最近的图片文件。

如图所示，点击调用后代码如下： ...mapActions([ 'shellGetImageAndUpload', ]), // 调用shell/xx 微信企业微信等选择图片上传识别拿到数据，如果是从PC端打 ... 使用 wx.chooseImage 的 localid 显示可能会不成功） callback(localIds); }, }); },...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vue-cli3 请求不同域名接口?

在vue-cli3 vue.config.js中配置 api是成功能请求到数据 ecs是请求404 感觉下面的拦截/ecs没有生效。项目也多次重启了没得效果请问有其他小伙伴遇到嘛？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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