Recent questions in Technique[技术]

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为什么react的组件要super

为什么react的组件要supe...

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

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高亮不同项,隐藏相同项,商品详情对比,京东商品对比的那种,有没有人会呢

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

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sql - I'm trying to Calculate the amount to be charged for each assignment. Using Oracle DBMS

I have this so far but stuck..... SELECT a.Total_Assignment_Hrs, a.Assignment_Cost_Per_Day SUM (Total_Assignment_Hrs-Assignment_Cost_Per_Day) AS Assignment_Cost FROM Projects p, ... statement in how do extend it to show what i need ?....

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

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在这能有机会得到一个前端大师成为我的mentor吗

没有具体的问题. 之前学习过Vue,能写一些页面了. 因目前在学习React,因项目时间紧.想快速学习进入状态. 但是有一些概念性问题或者逻辑的理解不是到位. 如果每个问题拿出来问问题,又显得太琐碎. 同时对前端这些还是挺感兴趣的.所以未来还有不少问题和困难. 希望在这能找一位mentor. 可能你的三言二语就能帮助我尽快入门. 哪位兄弟姐妹可以帮忙吗?...

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

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629 views

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python - popen is not executing the command line parameters

I am trying to execute the following command via popen but not sure why it is not working and not error message thrown too. import os class Pabot(): def ... ) works fine in commandline. Any idea why popen does not function in this case?...

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

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560 views

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TP5的thinkphp文件夹只能浏览，不能调用

请各位大神帮我看看这是怎么搞的。刚下的tp5框架，thinkphp 5.0.24,复制到根目录新建几个空的文件夹，框架里面那个thinkphp文件夹在sublime里面就灰掉了，只能浏览但是不能调用。求解？ ps：换了一个版本5.0.22依然是同样的问题，tp3.2.3就没事。...

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

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我想要修改viewer自带的工具栏按钮的图标？修改的代码写在哪个文件里？three.js?viewer3D.js?

上面的icon我想改变一下具体代码怎么写？写在哪个文件里？希望大神指导一下...

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

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1.0k views

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javascript - Vue.js, emit multiple parameters from child to parent

I am trying to emit multiple parameters from child to parents.What is the best way to do it. Child getUpdated(value, type) { if (type === 'students') { this. ... !== undefined || programs.length > 1) { this.programs = programs; } },...

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

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1.1k views

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dart - How to add event listener and remove it into InputCodeControl in flutter?

I want to add listener and remove in dispose method to prevent memory leaks in my app. I am trying to add listener which will be fired when code_field is filled. What ways are ... Colors.black, fontSize: 30)), ), ], ), ), ), ); } }...

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

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1.1k views

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关于 import export 循环依赖的问题

关于 ES6 Module 的循环依赖机制有个小问题，关于 export default 的 //a.mjs import bar from './b.mjs'; function foo(invoker) { console.log(invoker + ' invokes foo.js'); bar('foo.js'); } foo('index.js'); ... 一个解答，感谢我其他的关于循环依赖的一些问题都写在了循环加载一文中，有兴趣的朋友欢迎交流一下 ...

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

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1.3k views

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Tomcat doesnot redirect to custom error page

Catalina logs shows WARNING [main] org.apache.tomcat.util.digester.SetPropertiesRule.begin [SetPropertiesRule] {Server/Service/Engine/Host/Valve} Setting property 'errorCode. ... a matching property. Is there any way to solve this issue?...

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

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1.1k views

1 answer

jquery - WordPress - edit label in Comments section?

Is it possible to edit the 'Comment' label in the Comments section at all to some wording of my choice? Maybe with CSS? Many thanks,...

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

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1.4k views

1 answer

bluetooth lowenergy - BlueNRG wrong header

I bought STEVAL-MKSBOX1V1 of ST and wanted to write my own library to create a BLE application. The BLE module on board is SPBTLE-1S which mounts BlueNRG-1, I ... with this module I would like to have a bit of consulting. Thanks in advance...

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

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1.3k views

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c# - System.BadImageFormatException - mismatch between versions

I am getting the following System.BadImageFormatException: 'Could not load file or assembly 'Flir.Atlas.Live, Version=2.0.14266.1000, Culture=neutral, ... x86)FLIR SystemsFLIR Atlas SDK 6inx64Flir.Atlas.Image.dll</HintPath> </Reference>...

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

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1.4k views

1 answer

PHP的毫秒时间戳中的毫秒部分是几位？

基本环境 php ^7.3 mysql ^8.0 环境的意思是按较新的版本来说，不考虑旧版因素因为MySQL中时间戳的格式是如下，所以在一般都是以如下格式进行存储 $date = new DateTime($value); $date = $date->format('Y-m-d H:i:s.u'); 请教时间戳里的毫秒部分应该 ... 更长的位数了吗？ MySQL中最多提供6位的毫秒时间戳，相信已经足够了如果考虑不同语言间的数据交换的时候，应该用几位的毫秒时间戳？...

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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three.js 三维模型整个场景数据如何存储到数据库

使用场景：一个场景中可以动态加载10多个模型（或者更多），模型摆放到场景里，每个模型位置，大小，缩放都可以修改，修改完成后，保存整个场景保存好的多个场景，可以根据场景id 来预览目前存储整个场景的数据到MongoDB数据库里面，但是场景下的glb模型特别大，把所有的数据存储进入，导致数据库存储不进去，数据格式 ... 面，对文档数据大小几乎没有限制有什么好的建议吗？存储在什么数据库里面（关系非关系数据库），以什么数据格式来存储，读取数据来渲染场景没那么困难？...

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

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1.6k views

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html - PHP Comment system using File Writer

I found a code from my old projects and I want to use it in my new project. But its not really working. Its a comment system with file writer and reader ... ="required"></textarea> <input type="submit" value="Review" class="reviewBtn" />...

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

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1.4k views

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小程序按钮如何设置背景图？

各位老师好，在小程序中如何将下面的按钮背景填充成一张背景图呢？通过CSS添加background-image属性好像是无效的，请问应该如何正确设置呢？白底状态希望可以将红色区域填充为背景图 .wxml <view class="px-2 ... .view-between text { line-height: 137rpx; color: #333; font-weight: 700; font-size: 28rpx; margin-left: 24rpx; }...

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

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2.1k views

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When using pandas dataframe.to_csv(), with compression='zip', it creates a zip file with two archive files with the EXACT same name

I am trying to save OHLCV (stock pricing) data from a dataframe into a single zipped csv file as follows. My test data is ohlcvData.csv, which I read into a ... 't appear to be such a setting. Any help on this would be appreciated. Thanks....

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

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1.9k views

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javascript - Convert BN to number

In truffle console I am executing the following statement, result = token.balanceOf(accounts[1]) This statement returns the following output. <BN: 8ac7230489e80000> ... : result.toNumber is not a function Help me to fix this thiis....

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

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1.7k views

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一个域名下为什么可以看到多个域下的cookie？

一个域名下为什么可以看到多个域下的cookie？这是什么机制？按理说，我在https://stackoverflow.com/下，应该只能看到domain为.stackoverflow.com的cookie，为什么我同时还能看到.google.com domian下的cookie。...

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

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1.6k views

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I'm stuck, i can't pass data from model with api Rest, into another activity

I don't know why it's says me that "java.lang.IndexOutOfBoundsException: Index: 0, Size: 0" I've been searching for this since 2 hours, and i ... class.java) //intent.putExtra("lolipop", users[position].toString()) startActivity(intent) }...

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

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1.5k views

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vue-router刷新页面，query传参时参数的类型变了

问题描述 vue-router通过query传参，比如：?fromWork=true&extraType=1,传过去的fromWork是boolean型，extraType是number型，但是当刷新页面时，拿到的参数都变成了字符串，有没有很好的解决方式解决方式 1、目前使用的就是拿到参数后进行类型转换了，但总感觉不是最好的方式...

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

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1.6k views

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el-collapse默认展开时，内部的父组件传值异常

<el-collapse class="collapse" v-model="notStarted" v-if="notStartedProjects.length != 0"> <el-collapse-item name="notStarted"> <template slot="title"> <div style="color: #ff3079;font-size: ... 是刚进画面时都显示不了手动点击展开 Q:怎么让初始画面显示el-icon-warn呢？...

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

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1.7k views

1 answer

react-native 如何本地离线创建通知栏消息？

类似友盟推送、极光推送，但是需要的 JS层发送通知，请问如何实现呢？有这种轮子吗？...

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

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1.4k views

1 answer

c - Problem organizing a data set chronologically

I'm here asking for your help, not because I have an error, but simply because of this solution that in my head seemed quite credible despite not ... ][clinicaSelecionada].minutosFim = temp.minutosFim; } } Thank you all in advance!...

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

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1.7k views

1 answer

javascript - How do you determine bitsPerSecond for media recording?

Is there some formula like frames per second X resolution to determine the bitsPerSecond? I can't understand what values I'm supposed to be ... bits_per_second = 16777216 } if (current_camera_height > 1000){ bits_per_second = 7500000 }...

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

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1.5k views

1 answer

javascript - graying out a checkboxes after slecting multiple options and clicking submit

I have a multiple checkboxes making up a list. I want a user to be able to select as many as they wish, to click a submit button after filling in ... is the best option or is there another easier / more efficient way? Thanks in advance...

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

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