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java - "Could not resolve com.google.protobuf:protoc:4.0.0-rc-2" trying to use the Protobuf Gradle plugin

I'm trying to follow along this blog post, https://redbyte.eu/en/blog/calling-java-from-go-using-grpc/, with a ... , I see the message No candidates found for method call grpc....

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

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256 views

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spring - Traversing a collection causes SQL update

I am struggling with this.. Whenever I traverse a collection inside a transaction it will trigger an SQL update for one of ... . This situation comes up only for b1 in entity A....

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

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html - Python words of my message are being cut on my website

I created a simple function that generates numbers between each word of my message. Here is an example : As you can see, the ... there is another way to do it, tell me please :) )...

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

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414 views

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nodejs如何提取图片中不规则的一部分？

前台传入图片的一些相对定点的pixel 坐标，如何根据这些坐标提取图片的某一些部分？像 sharp gm 等 crop 功能都是根据矩形切割或者提取的，急，在线等大神。...

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

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326 views

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amazon ec2 - Updating kubernetes with kOps causes calico-node to fail with "BIRD is not ready: BGP not established"

Let me preface this by saying this is running on a production cluster, so any 'destructive' solution that will cause ... /cni/bin HostPathType: cni-net-dir: Type: HostPath (ba...

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

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271 views

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objective c - run applescript from cocoa app stopped working

This code had been working fine until just recently. I hadn't' changed anything nor upgraded my system and I ... ]]; return [string isEqualToString:@""]; } @end...

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

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295 views

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arrays - Randomly picking unique elements

I use rand to reach random three element from a and add this m values to array but I want them to be unique. So, array can't be ... ] 3.times do m = a[rand(a.size)] array << m end...

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

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297 views

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navicate 出现错误怎么定位到哪一行

怎么知道是哪一行的sql语句错误...

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

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how to reduce the spacing between the items in react-native-super-grid package grid

I am working in react native and I am using package. My question is how can I remove the space between the items. I ... ={styles.cardText }>TEAM LEADERSHIP</Text> </View> </Card>...

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

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313 views

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html - Full screen and geolocation button does not work in my web map

I have created a web mapping about a national park with HTML and after a repository and obtain a host in Github in this ... secure origins are allowed (see: HTTPS:...." thanks!...

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

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163 views

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c++ cli - Visual Studio 2019 Class does not have a correct Copy Constructor C++

I'm working on a project for uni and I was thinking about a simple game where you construct ships and battle with a fleet of ... this->SPEED = new_speed; this->AA = new_aa; }; };...

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

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327 views

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reactjs - react native mapStateToProps and React.useEffect render issue

I have a project that needs to show a register modal when the user is null, it works some times?? I am asking a state element ... ()) } else { setVisible(false) } } ), [] );...

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

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456 views

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请问json文件可以用字符串的形式保存吗？

data.json文件↑ 疑问1:vscode的json文件代码都是对象形式的，可以用字符串的形式吗？ fs.readFile('./data.json',function (err,data) { var students2 = JSON.parse(data ... 的students3不用加双引号呢？不知道我的理解有没有错，求大佬解惑_(:з」∠)_...

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

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473 views

1 answer

python - sklearn.utils module is not found

So I have sklearn installed, but for some reason whenever I try to import sklearn it says: Traceback (most recent call ... anyone have any ideas? I have Python 3.8.7 installed....

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

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525 views

1 answer

定时执行任务除了crontab还有没有其他方式？

定时执行任务除了crontab还有没有其他方式？...

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

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387 views

1 answer

react-native 全局设置字体

项目上有个APP是混合应用，部分功能使用react-native写的，现在有个需求是引入一个字体文件，全局的文字都要设置为该字体，求大神给个思路 1、如何实现更快捷方便， 2、由于原生部分也需要设置为该字体，所以字体文件是放在原生代码里的，那 rn部分应该如何公用一个字体文件 3、再次感谢，本人没做过rn的相关开发，赶鸭子上架了，求指导...

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

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384 views

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cron - Create task to reboot every week and make sure all tasks are safely stopped

I have tried the Crontab in root. 30 21 * * 1 /sbin/shutdown -r now This code would restart my server at 21:30 every ... to safely stop and if not is there a way to allow this ?...

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

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425 views

1 answer

css - sticky or fixed div show after id and hide before footer

I wand to build second and custom size sticky sidebar for product ( in elementor ) with absolute or fixed position. I ... I reached the #footer This video is exactly what I want...

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

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314 views

1 answer

Handle correlations in Load runner and use them in JMeter

I am trying to record SAP scripts in Load Runner and correlate the business flows. I want to convert the script ... from Load runner to JMeter. Quick Response is much appreciated....

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

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281 views

1 answer

Mac OS Keyboard and mouse problems

Im on a Mac OS and whenever i hold Ctrl and left click it registers as a right click. Another problem i've ... . Any help in fixing either of these problems would be appreciated...

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

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269 views

1 answer

如何检测项目的最低版本需求。

比如说项目写完了，用什么工具可以直接检测项目中所使用的内置函数中，所支持的最低版本需求逻辑大概是这样吧，比如某个内置函数的使用，在PHP5中，只有一个参数，到PHP7.1中，新添加了一个参数如果项目中，这个函数只使用了一 ... 本需求请问，有没有这种工具？是在哪里提供使用的？本地ide工具和插件或者GitHub应用，或者其他第三方工具都可以 ...

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

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421 views

1 answer

小程序怎么实现轮播h5页面

现在公司项目需要做成抖音小视频播放的效果，但是不光只有视频还有h5页面，怎么实现h5页面展示呢...

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

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695 views

1 answer

g++ 如何关闭对函数返回地址的保护？

我想要模拟一下 csapp 的 buf 溢出实验，编写 cc 文件，然后，编译，通过输入的字符串改变函数的返回地址，我尝试使用了 -fno-stack-protector -fno-stack-check -fno-stack-clash- ... 返回地址，就直接段错误，大家知道该如何编译或者 csapp 的 buffer-lab 的编译选项吗?...

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

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332 views

1 answer

请问npx命令中的example是什么意思?

npx create-next-app --example head-elements head-elements-app 如上命令行,来源:https://github.com/vercel/nex......

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

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156 views

1 answer

mysq如何解析json字符串

现在表里面有params字段,text类型的，存了一个很大的json字符串，json中 "time_z" 出现过N次，我想在不写存储过程，不建中间表的前提下，写一个sql把time_z字段对应的值全部提取出来，如何做到？...

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

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190 views

1 answer

java - Local Listener in Oracle Database

I learn Oracle Databases and have some question: If i have 1 default listener: LOCAL LISTENER, (address=(protocol=tcp) ... from "trusted" sources. It's often practice in services....

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

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293 views

1 answer

Python3 -m http.server 只能单线程吗？

Python -m http.server 开启的服务好像只能是单线程访问？一个文件再被下载的时候，其他人操作不了这个文件，请问下可以开启多线程吗？...

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

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185 views

1 answer

python 中flask 问题

from flask import Flask,request,jsonify app = Flask(__name__) def count_char(a,b): return a+b; @app.route('/test',methods=["get"]) ... Press CTRL+C to quit) 我明明把端口改成7722,，怎么还是5000？...

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

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