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1.2k views

1 answer

xcode - Error: Failed to install CocoaPods dependencies for iOS project, which is required by this template

I am getting this when trying to install React Native for MacOS. $ npx react-native init myproject ld: warning: dylib ... .[ch] Send bug reports to <[email protected]>....

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

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581 views

1 answer

js 数组对象有多层数据，但只保留两层，该如何解决？

模拟数据代码贴上： let nav = [{ name: "用户中心", code: "userManage", url: "", component: "", children: [{ name: "角色管理", code: " ... : "应用管理", code: "system", url: "", component: "" }] } ]...

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

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309 views

1 answer

java - Pagination of firestore data while scrolling in recyclerview

I'm trying to implement pagination in a recyclerview. My code works fine without pagination but I can't seem to ... of code but nothing really explains it clearly.. Kind regards....

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

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507 views

1 answer

华为 vue微信网页长图文页面在顶部向下滑动时无法触发touch事件

<div style="widhth:100%;height: 100vh;overflow-y: auto;" @touchstart="listScroll1Start($event)" @touchend="listScroll1End($event)"> </div> 当在页 ... touchend事件在华为手机上不触发请问有没有什么方法可以解决...

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

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303 views

1 answer

关于antd中Upload的组件问题

<Upload listType="picture-card" onPreview={this.onPreview} onDownload={this.onDownload} showUploadList={{ showDownloadIcon: true }} name=" ... 的showDownloadIcon只能全部控制，这并不是我想要的，怎么办？...

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

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201 views

1 answer

python 3.x - How to confirm multiprocessing library is being used?

I am trying to use multiprocessing for the below code. The code seems to run a bit faster than the for loop inside the function. ... )) pool.close() # 'TERM' pool.join() # 'KILL'...

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

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538 views

1 answer

Maven编译错误：无法访问HttpServletResponse 找不到HttpServletResponse的类文件

maven项目重新编译后报错项目里也有加入servlet-api.jar,也试过换成tomcat7 runtime,都不行，项目有几个子项目已包形式加载com.abc. ... ERROR] /D:/workspace/admin/src/main/java/com/abc/admin/controllers/ReportController.j...

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

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480 views

1 answer

javascript - Uncaught SecurityError: Failed to execute 'toDataURL' on 'HTMLCanvasElement' [JS] [jQuery]

I try to merge two image in a canvas, past it in an img. merge function is OK I think, probably many best way to ... Click me</button> <button onclick="lodzer()">Click me</button>...

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

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442 views

1 answer

pandas根据值判断写入同一行不同列

有一excel文件，有上千条数据，需要根据地点这一列，如果为北京，在类型这列写入 A'，为上海，在类型这列写入 B'，为广州，在类型这列写入 C'，如果不用excel公式用pandas怎样实现？ ... 类型 1 2020/04/09 北京 100.00 2 2020/04/10 上海 90.00 3 2020/04/10 广州 80.00...

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

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426 views

1 answer

php将导入的表格中的数据转化成html 怎么实现？

这是一个表格导入数据库的时候要求生成html的table导入数据库主体参数是多个，具体数量不一定有多少配件参数一个编号对应的数据是一组，有多个编号服务参数一个编号对应的数据是一组，有多 ... (2) { ["attr"]=> string(12) "商品型号" ["value"]=> string(17) "ThinkPad L490-128"...

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

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206 views

1 answer

angularJs如何让router和controller分成不同的文件？

controlller.js : var app = angular.module('app', ['ngCookies', 'ui.router', 'ngFileUpload', 'tm.pagination']); //路由配置 app.config( ... 的about.html中也引入了这个about.js，也是没用这个问题，怎么解决？...

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

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320 views

1 answer

node.js - NodeJS read query from POSTMAN but API doesn't work

I'm trying to get the min and max values based on queries. I'm using the following logic, if(req.query.max_price && req. ... logic, but I can't seem to pin where the problem is....

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

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621 views

1 answer

java - back button goes to confirm form resubmission

I made a logout servlet for logout button, when clicking on logout servlet it successfully going to login page as coded. ... (userr == null) response.sendRedirect("Login.html"); }...

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

0 votes

110 views

1 answer

javascript的this导致的耦合问题

function a(){ this.afun = param=>{ return this.bfun(this.a_data + param) } } function b(){ this.bfun = param=>{ return this.b_data + param } ... 对将来维护产生不必要的麻烦? 请问我这样的代码编写方式是否是正确的?...

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

0 votes

488 views

1 answer

python - What does -1 mean in this code([file for file in os.listdir(folder_dir) if file.find("xlsx") != -1])?

How can you interpret the code? [file for file in os.listdir(folder_dir) if file.find("xlsx") != -1] Also, what does -1 mean in this code?...

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

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376 views

1 answer

求通过部分树和结构获取完整树数据的算法

有这样一个需要，求算法有一个树，初始时不完整，如下： let tree = [ id: 1, children: [ { id: 2, children: null }, { id: 3, children ... 直到construction中的children为null,结束遍历，拼接出通过construction结构的tree数据求一个算法，谢谢...

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

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364 views

1 answer

ANTD 表单联动与数据回填怎么做？

问题描述 antd表单项之间存在联动，有些字段依赖另一个字段来控制是否渲染，如果只是单纯的录入没问题，可以在render阶段通过form.getFieldValue来做条件渲染，但是现在如果要从后台获取数据，这个表单要兼顾录入与更新功能，如何 ... 际看到的错误信息又是什么？我期望能够通过Select选项来控制其他一些字段的渲染，不管是新的录入还是更新时...

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

0 votes

370 views

1 answer

curl - Embedding C library without installing it

I'm quite new to embedded software. I'm recently trying to build linux embedded system with some packages, to make IoT ... case, please tell me the possible ones on above example....

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

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1.6k views

1 answer

electron vue 开发环境运行白屏, build之后运行exe正常

electron vue 开发环境运行白屏, build之后运行exe正常环境: node 10.16.0; npm 6.9.0; vue 2.9.6; 使用的是simulatedgreg/electron-vue模板 npm install -g vue- ... 帮忙分析一下是什么原因, Google了一圈都没有遇到我这样的, 基本都是打包出现白屏...

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

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344 views

1 answer

wangeditor富文本怎么把一个vue卡片组件添加到富文本里呢？

官方提供了一个方法 this.$refs.obj.append(oBox) obj就是富文本div，oBox就是这个div元素DOM片段但是有个问题就是这个光标一直会在删除按钮那个地方，而不是在这个div元素片段的外面，所以接下来输入字符就是有问题，这种卡片式插入到富文本应该用什么方法呢...

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

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407 views

1 answer

How to show suggestions of existing child record in TabularInline in django admin?

I want to show suggestion of existing child record while adding child record to parent. class IndustryInline(admin. ... records like we get in case of ManytoMany relationship....

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

0 votes

441 views

1 answer

ios - SwiftUI Drag to Dismiss ScrollView

I'd like to have a drag to dismiss scroll view in SwiftUI, where if you keep dragging when it's at ... the offset decreases as the OffsetAwareScrollView catches up to the content....

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

0 votes

291 views

1 answer

python - Add Rich Text into QTextEdit Using Buttons

In PyQt5, I have some code which creates a button. I also have a QTextEdit Widget in which ... = QtWidgets.QGridLayout() #Create A Label self.FrontC...

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

0 votes

807 views

1 answer

pom.xml - Maven build is failing with error could not find artifact

I have a project demo-parent which contains 2 subprojects child1 and child2. demo-parent is building a pom. child1 and ... have used <revision>1.0-SNAPSHOT</revision> in child1....

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

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358 views

1 answer

请问前端请求数据，为什么没有响应内容啊？

...

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

0 votes

693 views

1 answer

typescript - This condition will always return 'true' since the types '"autocomplete"' and '"manual"' have no overlap error In Angular

This is the condition I am using [class.active]="fromMode != 'manual'" and the formMode is been intialize ... .fromMode : 'manual'; Not understanding what is problem here...

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

0 votes

291 views

1 answer

user interface - Why Android Studio don't display the screen preview?

I'm a newbie on Android Studio, and I'm trying to create something in the activity_main.xml file but Android Studio don' ... be happy if you have a solution ! Thank you by advance...

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

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344 views

1 answer

sql - sys.dm_db_index_physical_stats shows I have 3 PK indexes after rebuild

I was checking the fragmentation in the index in one table of my DB with the following ... 1557580587 0 Channel 3 idx_Channel_RegisteredTime 1557580587 0,0429737859905458...

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

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