OStack Q&A-Knowledge Sharing Community

0 votes

395 views

1 answer

sql语句如何按照时段分组

碰到这样一个需求，需要查出订单表中每个时段的销量，请问sql中如何根据时段去分组？数据库为mysql...

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

0 votes

361 views

1 answer

scrapy爬取手机版微博weibo.cn模拟登录出先问题

代码如下，不知道为什么一直不能成功登录 ># -*- coding: utf-8 -*- import scrapy import re import requests #import urllib ... //weibo.cn/> from <GET http://weibo.cn/crossDomain/?g=4uegcdef1d93rkj4S3Zo...

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

0 votes

352 views

1 answer

zepto ajax 回调不执行

$.ajax({ type: 'GET', url: 'data/teacher.json', dataType: 'json', success: function(data) { alert(); var teacherArr = data.teacherList; var ... 这是我项目目录，请求地址是我自己写的json文件，本地服务器...

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

0 votes

711 views

1 answer

移动端雪碧图background-position 用rem对不准位置除了sass还有什么好的解决方案嘛

移动端雪碧图background-position 用rem对不准位置除了sass还有什么好的解决方案嘛...

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

0 votes

189 views

1 answer

Python编码问题？

我用Python3的requests库从一个api请求一个json数据，然后试图去print出来： res = requests.get("http://aaa.com/bbb.php") res.encoding='utf-8' name = res.json(encoding ... 取到的字符串每次都是不同编码的，我应该怎么正确输去这个不确定的字符串？...

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

0 votes

269 views

1 answer

一个关于Android webview的问题

问题:在Android4.3的webview中我调用history.back()或go(-1),history堆栈的数目都会增加一下,结果就是只要打开了一个三级页面,再调用的话页面就只能在二级和三级页面间来回跳转,不会返回到一级页面...

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

0 votes

169 views

1 answer

Serialize in Java and read in C++

I am trying to serialize a Java object in such a way that its content can be read by an existing reader.cc module, ... ), in case some context might help: reader.cc, Java code....

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

0 votes

591 views

1 answer

node.js - API calls work locally but gives MongooseError in heroku

I've spend hours on this and I can't find what I'm doing wrong. Everything works well locally Here's my subdocuments ... to Month.findOne? Why do I not get this error locally?...

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

0 votes

298 views

1 answer

xcode - TabViewController : centering the children views & setting the background

I have a SplitviewController, with a tabViewController embed in the right part of it. the 3 buttons inside the left apnea ... I still don't figure out how to remove the background....

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

0 votes

965 views

1 answer

asp.net web api - Error if I invoke the microservice through the gateway with Ocelot 16.0

I am carrying out a project with apigateway and microservice Employees with visual studio 2019 with net.core 3.1 My ... 4902ms 404* I can't understand where I'm wrong!...

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

0 votes

340 views

1 answer

android - How to automatically hide the status bar after scrolling it down?

I want to automatically hide the status bar after 3 seconds of scrolling it down. currently, I'm doing this. class MyApp ... the status bar. Is there any better way to do that?...

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

0 votes

410 views

1 answer

r - How to address several datasets in a loop to perform a binary classification using a threshold value?

I'm relatively new in the R community (using RStudio) and am performing a study measuring the human gait. I'd like to set a ... tbl_df", "tbl", "data.frame")) Btw, happy new year!...

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

0 votes

267 views

1 answer

javascript - Angular 8 : why execution of getcartorCreate() method break after execute the this.id = await this.getServer();

private getServer() { return this.db.list('/shopping-carts/').snapshotChanges().toPromise(); } private async ... dropped the service. what kind of behaviour of this ?...

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

0 votes

147 views

1 answer

Subclassing CALayer breaks animations

Trying to do a simple opacity fade in/out over 1.5 seconds. (0.5 seconds in, 1s out). If I add a generic ... display() { self.path = UIBezierPath(rect: self.bounds).cgPath } }...

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

0 votes

298 views

1 answer

javascript - Why is for loop skipping part of string?

I am creating a calculator app that follows the order of operations. My issue is coming the else if on line 10 that checks for parentheses. What I ... 2 [6] /(2+1)+4 2+1 [6,/,3] +4...

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

0 votes

639 views

1 answer

c - Segmentation Fault and isalpha

I want to clear up my understanding of Segmentation faults while using command-line arguments and isalpha() but this ... fault? Thanks for taking the time to read this post...

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

0 votes

269 views

1 answer

IDEA Spring-Boot: method ** is never used

index 出现了警告，Method 'index()' is never used IDEA 不是支持 spring-boot 的吗 IDEA 2017 版本在使用 2016 版本的时候好像没有这个警告...

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

0 votes

245 views

1 answer

python - Regular Expression from long string

I have the following characters running on DataFrame: 1.83 1 71% 4.25 X 18% 4.30 2 11% +88 I'm trying regular ... regex101.com for testing What's the best way to resolve this?...

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

0 votes

476 views

1 answer

react路由browserHistory模式下location.pathname一直不变化

react路由browserHistory模式下location.pathname一直不变化...

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

0 votes

227 views

1 answer

How do you merge a huge mess of branches in Sourcetree/Git?

I've been using Sourcetree with Git for my own version control, no other people on this project. I thought I made a ... so that both Mac and PC are committing to the same thing?...

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

0 votes

182 views

1 answer

python 3.x - Mac executable not working when downloaded online

I have made a small (8 MB) program into a MAC executable (.app?) It works great if I share it using a ... the program. EDIT: Clarify what doesn't work means Please help....

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

0 votes

283 views

1 answer

React 的新手问题，如何在不同页面灵活插入react组件？

<head> <script src="../../js/lib/react.min.js"></script> <script src="../../js/lib/react-dom.min.js"></script> ... data='AdData02'/>, document.getElementById('Ad'), ) }else if........

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

0 votes

420 views

1 answer

在nodejs的程序里面怎么理解IO呢，如何用一段代码来说明IO

在nodejs的程序里面怎么理解IO呢，如何用一段代码来说明IO，看了很多文章大部分都只说原理层面，I是input，O是output，但在nodejs的代码层面怎么理解这个IO呢，求大家赐教啊，写了很多代码了，但是每每思考这 ... .log('end') }); console.log('doing') 可能这段代码呢不能解释IO希望大家解惑赐教啊...

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

0 votes

1.3k views

1 answer

i have tried to change the port of apache in xampp but its not working?

My xampp server is not running apache and giving me the error of Error: Apache shutdown unexpectedly. 2:49:49 AM [ ... change the ports by going to config files but all in vain...

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

0 votes

278 views

1 answer

javascript - CypressIO - How to return multiple objects from plugins file for use with Configuration API and Code Coverage?

Currently my cypress tests are using this example for multi environment configuration which has a method to return ... having both multi environment and code coverage? Thanks!...

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

0 votes

381 views

1 answer

amazon web services - Special characters in URL leads to 403

We have a server deployed on amazon aws, the problem we are facing is that when ever there's a ... ] RewriteCond %{HTTP_USER_AGENT} ^pcBrowser [OR] RewriteCond %{HTTP_USER_AG...

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

0 votes

505 views

1 answer

关于weex页面在android端播放视频的问题

刚试了一下weex页面在andriod端播放视频时，调的是android本地的videoView;大家都知道videoview 的扩展性太差了，没有全屏播放开关按钮等...... 那么android本地怎样去扩展实现weex页面视频播放方面的功能，或是weex_sdk 有没有可供实现的接口？跪求!...

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

0 votes

691 views

1 answer

postgresql - java.lang.NoClassDefFoundError: org/apache/kafka/connect/header/ConnectHeaders

I am trying to create a connector using debezium connector to postgresql and kafka connect. But am seeing this error [2020 ... . It says status failed with the same error as above....

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

Categories

Recent questions

Just Browsing Browsing

Most popular tags