Recent questions in Technique[技术]

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terminal - Why the Chalk, the Node.js package can not output correct formatting in Windows?

In the Chalk documentation, there is just allusion that this library will not work properly in Windows: If you're on ... terminal Not so bad in the comparison with above ones....

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

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256 views

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After google cloud printing shutdown what cloud printing?

What is (free or lowcost) to go to after the Google cloud printing shutdown? some say google g suite, but that has that that is shutting down too...

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

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342 views

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ruby on rails - problem with google icon font when use import embed code?

I am newbie with Rails and I am trying to write a very simple Rails program using Google fonts. And I tried to use ... Could you please give me some ideas ? Thank you very much....

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

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Ubuntu Apache2.4 配置日记每天生成提示【CustomLog: command not found】

Ubuntu 14.04 64 位 Apache2.4配置日记每天生成提示【CustomLog: command not found】使用以下配置方法配置方法：将其改 ... | /usr/local/apache/bin/rotatelogs /home/logs/www/%Y_%m_%d_access_log 86400 480″common...

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

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php - Trying to get property 'name' of non-object but i have data name

I do REST API MONGODB-PHP CRUD via postman and got Trying to get property 'name' of non-object. but i have a ... 'name' of non-object in C:xampphtdocsmongodelete.php on line 22...

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

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463 views

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TypeError: Cannot read property 'comments' of undefined

数据结构为mongodb数据库，posts集合下的comments为一个数组对象，把comment是最为评论区，想在存入新评论时，先检测评论区的个数，也就是comments的length属性代码如下： function commentFloor (id, back) ... }; 这个问题已经忙活了一天了，各种查资料，没方法，只有向大家求助了，谢谢！！！...

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

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473 views

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kubernetes - how to control the usage of each GPU used on each machine in k8s cluster

Ask a question, how to control the usage of each GPU used on each machine in k8s cluster of two machines with two ... other three cards, leaving 7g + free for one graphics card....

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

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c++ - How to apply OOP principles for backtracking and expression conversion?

So I have been given 2 tasks: Task 1: Program a backtracking algorithm Task 2: Program a algorithm for expression ... . How else can I create classes and use those principles?...

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

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441 views

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在学习瀑布流布局中图片没有正确对齐的问题

在进行left对齐时，使用两种方法，第一种总是无法对齐，第二种就不会（实际上也略有偏差），这两种不应该是一样的结果吗？ window.onload=function(){ waterfall("main","box"); } // 通过 ... 种方法在chrome上运行的效果 ![图片描述] 这是控制台输出第一行第四列和第二行第四列的offsetleft...

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

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javascript - Problems with json.parse when making a command in discord bot

I'm trying to code a Cursedimage subreddit command and I keep getting this error (node:10488) UnhandledPromiseRejectionWarning ... () message.channel.send(cursedembed); }); break...

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

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500 views

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算法：如何从一组数据种提取出需要的组合

例如，有如下的十六进制数据： 27 2c 30 46 48 50 61 73 82 93 a3 aa b3 c4 d3 e5 f3 106 113 127 133 148 153 高位为index（这部分为数据中的特征值）， ... 30 48 50 61 73 82 93 a3 b3 c4 d3 e5 f3 106 113 127 133 148 153...

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

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369 views

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javascript - Unable to change the styling properties inside an iframe body tag

I have written this html script to display wikipedia inside iframe but i want to change the background color of it, below is the ... " height="450px" > </iframe> </body> </html>...

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

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167 views

1 answer

python - Collect ids as list during annotate grouping by different parameters in Django

I have to collect distinct vehicle_type_ids while annotating in django . This is what I have right now along with ... same using a separate query. Any help is appreciated....

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

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368 views

1 answer

java - Regex, proper escaping for " (groovy)

My second day coding java/groovy so bare with me :) In short, I'm trying to replace " with \" string = ... One without also changing Zero. Case two is handled by 4 backslashes....

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

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408 views

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Math.pow(23,29)%91 的结果为什么是错误的？

Math.pow(23,29)%91 的结果为什么是错误的？ public class T1 { public static void main(String[] args) { double c = Math.pow(23,29)%91.0; System.out ... .println(c); 输出 36 然而这都不是正确答案正确取余后的值是4才对...

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

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553 views

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可视化图表编辑，用echarts能否实现？

现在要开发一个可视化的图表的模块，能够对单独的图表进行编辑，初步的设想是用echarts来做，想问一右边的属性编辑栏eacharts能否实现，或者有更好的推荐吗？属性面板里，关于字体对齐，颜色，字号等，是否有现成的插件，还是要自己一个个手动写？...

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

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157 views

1 answer

关于盒模型的疑问？

关于盒子的总高度(w3c模型)有两种说法：一种是上下margin + 上下border + 上下padding + height，一种是上下border + 上下padding + height 我也通过谷歌的盒模型：得知总高度貌似要加上 ... 大小那又是什么的大小？而且如果盒模型的尺寸不包括margin为何下面要选A 感谢大佬指点了 ...

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

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429 views

1 answer

LimitOffsetPagination with viewsets.ViewSet in Django Rest Framework

Can we use LimitOffsetPagination with viewsets.ViewSet in Django Rest Framework. settings.py: REST_FRAMEWORK = { " ... def destroy(self, request, pk=None): pass...

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

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292 views

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vue.js v-for中v-model该如何获取checkbox的值？

效果如下：目前单选框可以获取value值，但是多选框只能获取到true或者false，而且只有一条。而且获取到的数据格式也不太理想，想请教下如何才能获取到每一项的选中项的值呢？...

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

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535 views

1 answer

javascript - Mocking multiple calls

I'm using ts-mock-imports and I want to mock multiple return values of a function call, then check that a ... second call to withArgs() removes the previous instance of mocking....

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

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579 views

1 answer

python - How to filter DB query with OR in Django

I am trying to structure a WHERE question LIKE 'Who%' OR question LIKE 'What%' SQL query from inputs of a POST ... ,"gender","listing").order_by('-added_date')) return searchresult...

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

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296 views

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在python进行方差分析时，残差的自由度总是为0.

做过很多尝试，将数据集中的0值去掉也不行因为数据集2是可以正常出结果的，照着它的样子改动，把月份改成字母还是不行 #coding:utf8 from scipy import stats import pandas as ... 27.3 OJ 2 59 29.4 OJ 2 60 23 OJ 2 ![clipboard.png](/img/bVLHoD)...

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

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250 views

1 answer

windows下的c++界面库有哪些？

比如Notepad++、everedit、sublime text 、winscp、ccleaner 、everything 这些软件用的什么界面库？谢谢...

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

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23.0k views

1 answer

postgresql - JPA Query Postgressql Issue

I have the following query defined in a CrudRepository: interface RoundRepository : CrudRepository<Round, Long> { fun ... still receive the same error. Can anyone help ?...

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

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581 views

1 answer

大家可以看下这个轮播大图怎么优化加载速度，目前来说第一次加载比较慢

网站：www.fineboon.com html代码： <div class="adv-content"> <div class="fullSlide"> <div class="kvbox"> <div class="kvcont" ... window).resize(function(){ resizeKV(); }); resizeKV(); });...

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

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830 views

1 answer

r - Scraping Google News with Rvest for Keywords

I want to compare News Article from different countries for the usage of a specific keyword. My idea is to scrape Google ... R and its the best method i can currently think of....

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

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220 views

1 answer

thinkphp中，如果报错，怎么读懂提示的TRACE？

以下是UserController <?php namespace HomeController; use ThinkController; use HomeModelCaptcha; class UserController extends Controller { public ... (); return false !== $count; } }...

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

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439 views

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求助：使用vue 路由钩子函数存储数据？

1，跳转成功，从【购物车】传给【确认订单】页面的数据 2，成功传送 3，当【确认订单】页面点击选择【选择地址】页面，返回时候数据丢失。 4，问：能否使用vue 路由钩子函数实现存储数据的目的？怎么存储？（不使用返回再次发送请求的方法~）...

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

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