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250 views

1 answer

I have a dataset consist of batches of size (32, 32, 3). In keras.balanced_batch_generator(X, y, *[, ]) ... a way to use this function with image patches like my dataset Thanks...

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

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219 views

1 answer

python - truncating file in 'r+' makes the entire file rectangles

The following is my code: import json id = "iderq23512345123521" with open("file.json", "r+") as f: data = json.loads ... I try to copy and paste the characters, they don't show up...

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

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324 views

1 answer

Flink DataStream Source读取HDFS数据不会触发窗口计算

1.如题，我用env.readTextFile("hdfs://"),直接打印可以看到数据，但我在创建窗口的计算不会进行，使用了处理时间，窗口是10秒的滚动窗。有人知道为什么吗？...

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

0 votes

488 views

1 answer

amazon cloudwatch - Best practices for logs and metrics in CloudFront with Lambda@Edge?

We got a CloudFront distribution with some custom code in Lambda@Edge functions. We also have APIGW with more lambdas behind it. ... alarms for such setups ? We're using CDK, btw....

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

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336 views

1 answer

database - How can I identify this "search syntax" or "query language"?

Can anyone identify this 'search syntax' or 'query language' ? I am looking for a more complete specification. There is ... conversions, I don't believe this was a home-grown DSL....

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

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852 views

1 answer

php 富文本编辑器上传多张图片存数据库，怎么读取

用富文本编辑器上传3张图片，存到mysql数据库是这样的格式 <img src="/uploads/image/20200709/6d553a425cdc4bd8b577019101d31e97.png" alt="" /><img ... 要写一个接口读取出来这三张图，问下大家这样怎么操作？谢谢了...

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

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516 views

1 answer

vue权限控制按钮不可编辑

问题描述 vue权限控制某个按钮是否可编辑，核心代码如下图问题出现的环境背景及自己尝试过哪些方法当单纯控制其是否显示是正常的，但是控制其是否可编辑就出现问题了，当其需要设置为不可编辑时，我通过vnode的组 ... true) } else { el.style.display = 'none' } } 你期待的结果是什么？实际看到的错误信息又是什么？...

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

0 votes

535 views

1 answer

虚拟机安装Ubuntu 18.04.4 LTS server版本，IP设置报错如何解决？

问题描述我在云平台的虚拟机中安装Ubuntu 18.04.4 LTS server版本（制作镜像）在进入虚拟机之后，根据ubuntu的引导来安装配置IP的环节中，subnet填写的是 255.255.255.0/24 ，之后填写address，出现报错 ... 到类似的问题，但是没有解决扔个?? 麻烦大佬指点一下这一步骤到底应该怎么配置，谢谢围观！...

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

0 votes

306 views

1 answer

Vue导航守卫的一个问题

to.id是undefined的 to.params.id才是有效的 props不是已经绑定了吗？...

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

0 votes

332 views

1 answer

sql - (Postgres) How to set value based on row's value

For example, I have this table: Table_A id | classification | key | value | date_time ------+----------------+ ... this? By the way, I am using PostgreSQL 11. Thank you in advance....

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

0 votes

319 views

1 answer

关于node跟chrome的异步请求问题

疑问1：测试发现http.get要等其他代码执行完才会请求，node不是异步非阻塞的吗疑问2：chrome浏览器执行ajax是异步非阻塞的，node跟chrome引擎是不一样的吗测试代码1（node v6.17.1）最终打印的时间为 ... num = 0; for (i = 0; i < 200000000; i++) { num += i; }...

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

0 votes

241 views

1 answer

vue-i18n使用问题

按照教程设置后出现下面的警告(怎么看着像是没有获取到vue版本) i18n.js里面设置如下，然后在main.js中引入 vue版本为2.6.11 en.js如下 export const m = { music:'网易云音乐' }...

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

0 votes

314 views

1 answer

python怎么转化字符串的编码?

text="'\x72\x73\x59\x42\x47':'123'" 怎么转化成为"'rsYBG':123"呢?...

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

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474 views

1 answer

给个思路，以下代码怎么优化（if-else）

export const fillValueToPanel = (target, resouce, isRate = false) => { Object.keys(target).forEach(key => { let val; if ( ... [key].toLocaleString() } target[key].value = val }); }...

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

0 votes

439 views

1 answer

WordPress迁移Hexo出错

按照Hexo的迁移教程,使用如下命令报错： npm install hexo-migrator-wordpress --save 也参考了提问: wordpress迁移到hexo，安装迁移插件时报错error ... run `npm fund` for details found 0 vulnerabilities npm版本 6.14.7，谢谢...

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

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118 views

1 answer

请帮我完善这个程序？

from selenium import webdriver import time import win32clipboard import win32api import win32con from selenium.webdriver.common.action_chains ... ') time.sleep(1) print('over')...

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

0 votes

382 views

1 answer

python - In multi-label classification, how do we find the P values and confidence interval for the performance evaluation metrics?

I am doing a multilabel classification using two different classifiers with a dataset of 7 labels and 20 features. I ... provide some suggestions on this? Thank you in advance!...

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

0 votes

281 views

1 answer

react native - useState array not updated when invoking function from another screen

I'm trying to add items to an array saved as a local state (using useState) through a function that is sent to ... added before returning to ScreenA is really added to the array....

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

0 votes

206 views

1 answer

前端打包之后，访问404

这个项目是打包之后生成了dist文件夹，我把这个文件夹删除了，然后再次运行，本地部署出现了404 运行运行正常主页出现点击任意连接连后台接口都没调用 config 未打包之前访问正常，打包之后，删掉了dist文件夹，再次启动访问，后台接口大部分访问失败，404/405之类，这是为什么呢？...

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

0 votes

412 views

1 answer

数据库操作，用A表中地区编号去找B表中的地区名。拼接成一条数据返回。

这是order表，有地区编号跟id；这是address_code表，有地区编号跟中文名我是想，拿到order表的时候里面的地区号就转为中文名 $address_code ... getAllAddress', $params); $order = api('appsysorderapiorder', 'getOrderFind', $params);...

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

0 votes

246 views

1 answer

java - How to delete all duplicate element from an array without using any library or collection

As the header said. I want to delete all duplicate element from an array without using any library or collection. ... other more efficiently way to delete duplicates? Thank you!...

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

0 votes

158 views

1 answer

python - Is there a way to resize properly game's screen?

Every time I try to resize the PyGame window, there's no resizing of the game, it keeps like before, and there's just more ... is there a method or do I just need to hand code it?...

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

0 votes

372 views

1 answer

关于React官网教程游戏源码的问题

首先，源码地址如下： https://codepen.io/gaearon/pe... 目前对于判断成功者这部有所疑问 function calculateWinner(squares) { // console.log(squares) const ... 何将编squares数组中变化的值的位置与lines做匹配的？不确定我叙述的是否明白...

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

0 votes

765 views

1 answer

ios - How to dismiss context menu (UIContextMenu) programmatically?

I have an iOS app. Some UIViewControllers have automatically updated content, it means that app can get update ( ... to dismiss context menu programmatically? Thanks for any help!...

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

0 votes

461 views

1 answer

recursion - How do recursive SQL Querys terminate and how do they get evaluated?

I ran over the following code I just cannot grasp how the computer would possibly evaluate such code such that cte_count ... I hope someone can make clearer how such Queries work....

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

0 votes

948 views

1 answer

MySQL查询表情符号报错问题原因及解决

问题线上报错 : java.sql.SQLException: Illegal mix of collations (utf8\_general\_ci,IMPLICIT) and (utf8mb4\_general\_ci,COERCIBLE) for ... t where name like '??'; Empty set (0.01 sec)...

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

0 votes

276 views

1 answer

java - Sending Message to Azure Event Hub

I am trying to connect to Azure event hub as described here. But getting below error: Exception in thread "main" java ... the issue? Any input in this regard would be great....

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

0 votes

302 views

1 answer

请问如何使爬虫进行的更快？

爬虫小白，根据网上的代码改成了自己想爬的网页，但是很慢，请教如何使速度变快？ import aiohttp import re import urllib.request, urllib.error import xlwt ... 7.0; Windows NT 5.1)'}) process.crawl(MySpider) process.start()...

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

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