Recent questions in Technique[技术]

0 votes

207 views

1 answer

javascript - Firebase SDK is missing database() function

I tried to use the Firebase SDK, but it does not have the database() function required to change, remove, or ... username: name, email: email, profile_picture : imageUrl }); }...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

338 views

1 answer

'wang' 这个参数是怎么传进去的？

__author__ = "wang" def func_a(name): print('hi %s' % name) def func_b(): return func_a func = func_b() func('wang')...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

306 views

1 answer

How to create a SQL database based on parameter being met in another database

I currently have a large database with a couple hundred thousand rows and I am trying to filter down to meet certain ... datas GROUP BY sym, tstamp HAVING COUNT(tstamp) > 300"...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

326 views

1 answer

spark可以手动指定某个task由特定的节点（worker）来执行吗？

如题，我有一个自定义的任务，但是在Spark中没有专门的函数可以执行该任务的并行操作，我可以在程序中指定这个任务的并行方式吗？就是说我能够将该任务手动分解（分解后任务互相独立），然后分别分发到指定的节点，来实现并行运算吗？...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

555 views

1 answer

重写HttpServlet的doGet、doPost方法时为什么要把它们的访问权限设为public?

看一本Java Web入门书时，其中提到HttpServlet的doGet方法是protected的，我们重写doGet方法时，为了使其能被Servlet容器访问，应该把访问权限设为public，然后我看网上的例子也全是把doGet写成 ... 不是容器调用其service()方法，其service()根据实际的请求方法来调用doGet或者doPost的么 ...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

368 views

1 answer

python 3.x - How join/merge/update JSON dictionaries without overwriting data

I have a JSON list of dictionaries like so: data = [{ "title": "Bullitt", "release_year": "1968", "locations": ... a better way/best practice when it comes to something like this?...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

133 views

1 answer

python - Hyper-prparameter tuning and classification algorithm comparation

I have a doubt about classification algorithm comparation. I am doing a project regarding hyperparameter tuning and classification ... is a best model in this case? Thank you!...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

667 views

1 answer

nginx可以使用302配置负载均衡吗

如下图所示。1，客户端先访问nginx。2，nginx轮询返回302-服务器真实地址给客户端。3，客户端访问正式地址。我是想做下载服务器，我感觉如果下载文件的流量都走nginx那么nginx将造成瓶颈，所以使用302的方式。这种方案是否可行？请问如何配置？...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

307 views

1 answer

scrollTop 值一直为零，且不能赋值

sendMessage:function(){ var _this = this; var userWords = document.createElement('li'); var ulTag = document.querySelector('.list-box'); userWords. ... ; } 我希望达到插入一个元素，内容区域自动滚动到底部...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

358 views

1 answer

c++ - MOSS Error-Unable to upload all files in a directory to MOSS Server

I am trying to run a plagiarism check on all C++ files that are stored in an directory using MOSS. perl moss.pl ... way to do this other than entering the 200 file names manually?...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

722 views

1 answer

karate - call the first feature from the second feature file, failed without specified clue

Run the first.feature file successfully，however， call it from the second.feature failed without any clue to analysis. Do ... failed: read('classpath:mainFlow/first.feature'), null...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

185 views

1 answer

angular.js ng-reapet报错

angular在循环json数组的时候总是出现下图错误上面是json的数组两个数组里面没有重复的值啊，这是为什么，大神求帮忙...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

346 views

1 answer

concurrent processing - Python multi-threading method

I've heard that Python multi-threading is a bit tricky, and I am not sure what is the best way to go about ... way I am making the API request is through a Thrift service....

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

288 views

1 answer

怎么通过js控制滚动条？

我在 <script> document.body.scrollTop = 100; //.滚动条位置不变； </script> 但是我在控制台输入这句话 document.body.scrollTop = 100;滚动条位置会变到100的位置，百思不得其解，为什么？在代码里面怎么控制？...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

400 views

1 answer

带有so库的android项目集成weex框架，js页面无法展示的问题。

带有so库的android项目集成了weex框架，js页面无法展示的问题。删除了所有的so库后，js页面正常展示，添加任意一个so库后，js页面无法显示。...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

516 views

1 answer

rem布局的时候为什么多行文字的时候现在的文字大小不一样？？

我想问的是为什么单行文字的大小跟多行文字的大小不一样？？？...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

297 views

1 answer

Declaring resolution-aware image assets is not working in Flutter

I'm developing flutter application. I want to apply images in my app, but it is not working. Of course, I ... is being referenced. Please let me know how resolve this problem....

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

172 views

1 answer

javascript - How to add line breaker in array and make it right aligned

I am noob in java script .Just made a small project that generates quotes. But i want that that the name of the ... random()*quotes.length))}; Thank You For your precious time!...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

320 views

1 answer

js通过高德api将省、市、区数据爬到本地，需要固定的格式？

数据结构类似这样，已经知道如何获取省市区数据，但是不知道如何变成这种格式的数据 `[{ 'label':'北京市',//省 children:[ { 'label':'北京市市辖区',//市 children:[ { 'label':'北京市市辖区',//区 } ] } ] }]` 使用高德api获取的数据是这样...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

405 views

1 answer

android - Detect property (eg pixel colour) of currently displayed image in separate application

I am developing a simple tool to assist in one aspect of a game I play on Android by automatically logging instances of a ... in my tool off of "when the screen flashes white"?...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

275 views

1 answer

c++ - Can't build test suite in cmake project with Boost.Test on Apple Silicon

I'm following JetBrains's tutorial on an Apple Silicon computer. I installed boost with MacPorts (sudo port install ... included the test subproject in the main CMakeLists.txt....

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

363 views

1 answer

关于一条sql语句的问题

先上码：大致浏览一遍就好，重点请看文字 $price = M('hotel_price') ->where("room_type = '{$room_type}' and status=1 and start_date <= '{$date}' and ... 心求教大神~~~~有什么我没说明白的地方请评论，我尽量第一时间回答 ...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

448 views

1 answer

Flutter - The best way to parse a JSON

I'm trying to parse JSON to an object in Dart, the documentation uses Map type to parse a JSON response.I have about ... an exception. throw Exception('Failed to load album'); } }...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

578 views

1 answer

flutter - Dart unit testing with throwsA

I am having some trouble when unit testing using expect(method, throwsA) So I have a Future function that is doing some tasks ... why it isn't working, it would be cool. Thanks....

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

201 views

1 answer

postgresql中的sql问题

SELECT districtid, char_length(districtid) as d_length FROM district where ST_Intersects(geometry, ST_GeometryFromText('LINESTRING (119.922 30.526, ... ) from dis); 有没有其他更好的方法？...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

332 views

1 answer

Trouble loading numpy array where they show pickle data error in python

I can successfully save & load small arrays using Numpy. Now I am saving the below array using np.save('array.npy') [0, ... EPS process") speed_array = np.load('array.npy') # load...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

545 views

1 answer

antd中的table组件如何做滚动加载分页

在使用Table组件时想做下拉滚动的分页，这个组件本身提供分页接口，但是现在我无法捕捉监听到table内部的滚动事件，请问该怎么实现...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

523 views

1 answer

html - Create Link to Embedded XML Search Engine Description

I want to create a single local HTML file that allows me to add a custom search engine to my Tor Browser. https:// ... way to add the search engine? Instead of rel="search"?...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

Categories

Just Browsing Browsing

Most popular tags