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609 views

1 answer

ng-zorro-antd 官网提供的按钮禁用的方法是通过标签的属性 disabled，测试是没问题的，我的问题是想要动态控制按钮是否可用，那么我使用了下面的方法： <button nz-button (click)="onClick02()" [ngClass] ... ，我要如何能动态控制按钮可用性？我自己使用的方法要如何解决被禁用状态下仍然触发事件？...

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

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345 views

1 answer

关于webpack学习的几个问题

写完vue用npm run build不是就可以打包了吗？为什么还要学webpack？我也不懂打包原理如果学webpack的话前端人员需要掌握到什么程度？三年前我看很多网上教学视频老师都说webpack过两年就会淘汰结果现在也没被淘汰所以一直没学。。。...

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

0 votes

580 views

1 answer

package - Can I skip updating and resolving when running Julia code with VSCode?

I recently switched from Atom to VSCode. The problem is that, each time I run a Julia code, VSCode shows: "Updating registry ... guess it can be avoided, but I couldn't find how....

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

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526 views

1 answer

flink DataStream算子中如何实时更新变量？

我在第一个map需要用到变量currentCenter，然后我输出的结果需要更新currentCenter（最后一个map），但是没办法更新，有什么办法更新吗？...

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

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268 views

1 answer

Maven Build Failure ｜ ReasonPhrase:HTTPS Required.

Does anyone know what result in this Java Project build failure and how to resolve it? Thanks! 有没有人知道这个Java项目的搭建失败是怎 ... is: 501 , ReasonPhrase:HTTPS Required. -> [Help 1] [ERROR]...

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

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541 views

1 answer

v-slot定义动态的插槽名，如何与v-for结合？

<template v-slot:[rgums+index] v-for="(g,index) in gums"> <div class="title">{{g}}</div> </template> 上述代码 eslint 报错： ... -bind:key' directives 这应该是 eslint 的bug了请问，这种情况该怎么解决？...

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

0 votes

202 views

1 answer

Java如何实现将JSONArray分页进行操作？

现有功能通过JSONArray存储数据，但数据量有时候比较大执行起来容易报错，现在的想法是每次分200条执行，Java代码如何实现？原本代码： JSONArray jsonArr = JSONArray.parseArray( ... 据转为JSONArray格式的 for(int i=0;i<jsonArr.size();i++){ //执行 }...

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

0 votes

338 views

1 answer

c++ - default member initialization for bitfields and usage of constexpr static bool in preprocessor directives

I need to default initialize bitfields of my class using c++11 uniform initialization but getting compiler error. Can somebody ... 'm using gcc and it supports only c++11 standard...

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

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401 views

1 answer

怎么一次性拿到所有用React.createRef() 获取的真实dom

怎么一次性拿到所有用React.createRef() 获取的真实dom...

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

0 votes

455 views

1 answer

前端如何动态显示当前时间(页面加载的初始时间从接口获得)？

由于本地获得当前时间存在问题，所以才有从接口获得服务器时间，然后动态展示，一秒秒的展示，请问如何处理呢？...

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

0 votes

349 views

1 answer

laravel框架下如何优化更新任务的速度

现在遇到一个问题，就是有个定时任务需要更新任务的状态，但是这个更新这个任务状态的运行时间太长了，因为需要同时更新几万条的数据，现在的是运行时间是六七秒，怎么把他优化到而一两秒内两三秒内，有什么号的实现的思路吗？现在的逻辑是需要一条一条循环数据，然后再先删后插。...

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

0 votes

170 views

1 answer

maven无法在eclipse里build，但可以在eclipse外build

pom.xml <plugin> <artifactId>maven-compiler-plugin</artifactId> <version>3.6.1</version> <configuration> <source>1. ... ) on project fileuploader: Compilation failure -> [Help 1]...

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

0 votes

141 views

1 answer

java - can't get my nested loops to work in my game

I am making a game and I need to close a door with my player. While he is closing he has a close animation. In my current ... d.closing=true; r.closed=false; r.locked=false; } } }...

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

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467 views

1 answer

IDEA jdk,maven 配置问题出在哪？

发现问题：如下两个配置jdk路径文件区别? sudo gedit ~/.bashrc /etc/profile jdk实际路径是：/usr/local/jdk1.8/jdk1.8.0_161/bin ... opt/maven/apache-maven-3.6.3 export M2=$MAVEN_HOME/bin export PATH=$M2:$PATH...

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

0 votes

1.3k views

1 answer

element table出现滚动条后，过滤为空，滚动条消失

求滚动条消失解决方案issue 暂时设置的table的高度min-height 1px,diplay:block 但会出现错位...

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

0 votes

221 views

1 answer

关于nodejs的问题？

后端小白，求一个关于nodejs写restful API 的代码结构目录，类似mvc模式（但是没有view层）...

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

0 votes

207 views

1 answer

vue的属性插值表达式的问题

我用Element的菜单组件，定义json menus = [ { name:'首页', icon:'`location`' } ] 页面中 <el-submenu v-for="(item,index) in menus"> <template slot=" ... > 报错说必须给:class赋值像这种需求，要怎么搞？需要在属性中用插值表达式 ...

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

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233 views

1 answer

typescript 在type中如何过滤可选属性

例如 type A = { name: string age?: number sex?: number } type B = FilterOptional<A> // => { name: string } 把所有可选的属性过滤掉，这个FilterOptional应该怎么写...

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

0 votes

163 views

1 answer

python - In my program the global variable actual_translated_audio is not working (Tkinter)

So basically I have this global variable called actual_translated_audio I need it to be global since I wanna use it in ... , text = "Yes", command = recongize_audio).pack()...

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

0 votes

147 views

1 answer

python - Is this the correct implementation of merge sort?

def merge(arr1, arr2): returned = [] while len(arr1) > 0 and len(arr2) > 0: if arr1[0] >= arr2[0]: ... the merge function, but cannot put my finger on what I am doing wrong....

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

0 votes

362 views

1 answer

来道算法题，求最优解

var a = [1,3,4,11,32,45,222,98,111,333,231]; var b = [1,3,11,45,98] 求这个两个数组的位置连续部分的交集。比如上面两个数组返回[1,3]...

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

0 votes

400 views

1 answer

between后面如果是变量，是不是只能改写为 a<x1 and a>x2 这种模式

在DolphinDB database的GUI中，执行ListedDate between (date_begin+":"+ date_end),提示 The second argument of 'between' must be a pair ，如下图所示：请问一下:这个 ... 面如果是带变量，是不是只能改写为 a<x1 and a>x2 这种模式?...

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

0 votes

253 views

1 answer

sql - How do I save the result of a query made by ogr2ogr as a table in the public schema of the same database?

How do I save the result of a query made by ogr2ogr as a table in the public schema of the same database?...

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

0 votes

209 views

1 answer

reactjs - How to normalize the data from the JSON with normalizr?

I am quite new to the normalizr and can't understand it well enough yet. How can I normalize the following JSON ... How can I combine this with TypeScript? Thank you in advance....

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

0 votes

250 views

1 answer

javascript - constructing a datatable with a foreign key

If someone can help me with this one, I would really appreciate it. I'm trying to get a Javascript table to display in a ... ; } public virtual Category Category { get; set; } } }...

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

0 votes

408 views

1 answer

powerbi - What is the correct way to join two tables together from the Common Data Service for PowerApps to use?

I have two tables in a PowerApp - both are > 5,000 rows and therefore are subject to the delegation limit ... caching the records I need without hitting the delegation limit?...

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

0 votes

656 views

1 answer

mysql 如何搜索10个条件里面满足两个及以上的行？

有一个tag表: id tag 1 a,b,c 2 a,c,d 3 a 4 e,g,z 5 a,y,z 请问如何查询 tag 里满足包含[a,c,e,f,g] 里面任意两个以上的？也就是匹配到a,c的第一行第二行，匹配到e,g的第四行...

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

0 votes

1.1k views

1 answer

vue 未知依赖导致dom刷新

如题修改了某个变量导致整个dom重新渲染相关代码如下如图每次更新数据后 log(222222) 都会被执行，间接说明dom被重新渲染了问题：不知道为什么整 ... .listenters = listenters } }, destroyed() { this.listenters && this.listenters.destroy() } };...

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

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