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Recent questions in Technique[技术]
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intellij idea - How to prevent all products of JetBrains from checking ignored files in the background and make it possible to commit
I've used several products of JetBrains. If I don't disable the git plugin in WebStorm (or IDEA), the IDE would always keep checking for ignored files. How to solve this problem?...
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CANVAS旋转图片,可旋转顺序为什么不对呢?
先上代码,直接可运行,不论是左旋转还是右旋转,顺序都不对 请问怎么解决这一问题?最后我需要返回base64位替换img里的值 <div class="content"> <div class="box"><img src="图片地址" /><div class="rotate_img">旋转 ... , -width, 0); break; } var url = canvas.toDataURL(); img.src = url; } </script> 先谢谢啦!~...
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vuex把数据放在seesion之后取值报错。
store的index界面: getters的changeTab.js 报错:...
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python - Tensorflow predict likeliness of two sentences to go after each other
I use AWS Textract to extract text from documents, however, some sentences are ripped apart which I need to put back together using Tensorflow. I'm quite new to ... two strings to go together. What model architecture do I need to do this?...
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documentation - Split view using docusaurus
I'm trying to achieve something like this: example image here Is there a way to do this using docusaurus?...
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js如何处理反斜杠(转义符)?
项目是一个webview嵌套的H5,然后问题出现的原因是app那边给到前端的字符串是一个字符一个字符拼好然后给过来的,后端存进数据库也没有进行转义,所以现在想解决的就是如何处理其中携带的转义字符 ?暂时不从app和后端那边处理,只在前端有没有解决的可能性? 例如:给的格式是 abcabc这种,我在前端要变成 abc\abc这种才能够正常输出 abcabc。 求大佬解答一下! 就是说如何找到那个反斜杠并且手动在前面加一个反斜杠来进行转义。...
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reactjs - useState, setting icon active and inactive
Hi all I have following code : my code I have two useStates, they checking if first one is true then they set active icon if false then inactive icon. ... It should be like something as checkbox Please help me to resolve this issue, thanks....
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c# - How to set PrefetchCount when using ConnectReceiveEndpoint with MassTransit?
As default, MassTransit sets the PrefetchCount to 16. I would like to change that. I can do this when configuring MassTransit. But when using ConnectReceiveEndpoint I ... , TimeSpan.FromSeconds(2))); }); }); await hostHandler.Ready; }...
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python - Tracemalloc Error while running HTMLrequests()
I'm writing an Discord-Bot which sends an web-hook including infos scraped from an website. The Function which scrapes the infos is the following: import json ... = await async_session.get('some url' + self._url) result_slug = result.text...
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python
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427
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奇怪的错误,mysql插入到数据库的数据读出来不对,问题在哪儿?
奇怪的错误,插入到数据库的数据读出来不对,问题在哪儿? 小白一枚,请高手指教; def get_last_date(conn): ret='' try: cursor = conn.cursor() query = '''select date from lastdate limit 1;''' ... lastdate (date,temp) values(2020-09-24,0); hhh (('1987',),) 1987 <class 'str'> 1987...
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Jan 27, 2021
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159
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什么是鸭子类型,TS中什么时候使用鸭子类型呢?
如题所示,鸭子类型是什么呢?...
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Jan 27, 2021
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137
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jquery :visible筛选
请问下jquery不能够多级筛选吗? <ul> <li> <select></select> </li> </ul> 比如我想筛选ul下可见的select标签,但是我只控制了ul的显示隐藏 用$('ul:visible select') 或者 $('ul select:visible')都取的不对 只能用$('ul:visible').find('select')来获取吗?...
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Jan 27, 2021
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jquery
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234
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git - Does Deleting a Branch Deletes It's Sub-branches?
I created a branch feature from branch develop, after working on the branch feature, the whole requirement changed, now I need to reset my whole work on ... without merging it to the develop branch) deletes it's sub-branch feature_backup ?...
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git
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152
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build提示文件过大
The bundle size is significantly larger than recommended. 这个怎么解决呀 The bundle size is significantly larger than recommended. Consider reducing it with code ... /load-on-demand You can also analyze the project dependencies using ANALYZE=1...
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454
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macos 全盘只读的情况下,如何安装cpp编译器到U盘
全盘只读,cmd + R 启动,别问我为啥不修电脑/重买/重装 clang 是不可能的,xcode 一条的都用不成。 然后装的是某个 mac 版的,配置了半天,#include_next <stdlib.h> 也修好了,到了最后一步告诉我需要 xcode-cli-tool 只好试着装 GNU 版本的,官网上说用 brew 或 port 装,但 ruby 我就装不上,port 又非得用 /opt 这个目录。 源码编译也不可能,我根本没有 make 这个命令...
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macos
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332
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读取json文件,require和fs.readFile哪个性能更好?
需求:想监听一个json文件的变化,需要知道其变更前后的数据差异。 思路:使用chokidar监听json文件,在add和change事件回调中通过require或fs.readFile获取到文件数据。 问题:该json文件数据较大,存放的着几百万条文件的数据,每条数据约200字节。总大小1G多。不知道能否通过require读取这么大的文件,读取效率相比fs.readFile如何。...
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Jan 27, 2021
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273
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分页时用到了java8新特性,问题如下图
...
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Jan 27, 2021
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0
votes
183
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python - Sum of every element in a list
So i have a list: list1 = [[1, 3, 6, 8, 9, 9, 12], [1, 2, 3, 2, 1, 0, 3, 3]] but you can also split it into two lists, if it ... , instead of every possible digits with every possible, just the first one in 1st list with 1st in second list....
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python
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196
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flutter - Waiting for getLinksSteam before continue
my problem is that my app won't wait for getLinksStream to be ready. In my case i want to login with OAuth2 and i need the responses after logging in. I'm ... Can somone help me here? (And sorry for my english. Its not my main language)...
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Jan 27, 2021
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334
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Centos7下nslookup特定域名返回server can't find *: SERVFAIL?
目前在一台CentOS7服务器上跑了一项业务,使用了腾讯云COS服务,认证的时候需要请求api-common.qcloud.com这个地址,业务里使用了curl 一开始程序正常,运行大概4个月左右后发现请求速度非常慢,平均15秒以上,检查发现curl请求的时候DNS就占用15秒 然后开始排查,尝 ... WHEN: 日 10月 18 19:49:05 CST 2020 ;; MSG SIZE rcvd: 55 系统已经安装了nscd,尝试清理缓存 关闭缓存均同样的效果 ...
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Centos7下nslookup特定域名返回server
0
votes
358
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1
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原生js创建两层div
使用原生js创建一个 <div class="a"> <div class="b"></div> </div> 这样的元素...
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Jan 27, 2021
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664
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url scheme唤起app后还是打开了app下载链接怎么办?
let openApp = function () { var u = navigator.userAgent; var isWeixin = u.toLowerCase().indexOf('micromessenger') !== -1; // 微信内 var isAndroid = u.indexOf(' ... location.href = "http://itunes.apple.com/app/id387682726"; } }, 2000); } }...
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Jan 27, 2021
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url
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717
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请问 TP3.2.3支持 mysql JSON字段的查询吗?
请问 TP3.2.3支持 mysql JSON字段的查询吗?...
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Jan 27, 2021
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请问
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601
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Remove Unused JavaScript - babel asyncToGenerator.js - Webpack
I'm new to Webpack/Babel and trying to leverage it to improve the lighthouse performance of a front-end website that utilizes React. I ran the lighthouse ... is needed? The page does read from cloudfront and uses lazy loading. Thoughts?...
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:last-child 选择器没有生效,请问怎么回事?
如图, .item1:last-child 选择器没有生效,请问怎么回事?...
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:last-child
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Vue项目运行时提示svg-sprite-loader ExtractPluginMissingException?
我已经执行了: vue add svg-sprite npm install svgo svgo-loader --save-dev npm install svg-sprite-loader 运行时终端打印warning: Module build failed (from ./node_modules/svg-sprite-loader/lib ... -node (webpack)/hot/dev-server.js ./src/main.js 浏览器控制台报错: 求教...
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Vue项目运行时提示svg-sprite-loader
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encryption - php halite file decryption "on the fly"
hello i tried to do some encryption on files with paragonie/halite (or with php open_ssl; it doesn't matter) the problem is that how can you open a file ... to do it with images which has to be available longer (show instead of download)...
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python - ValueError: The 'image' attribute has no file associated with it. when testing a model with a NULLABLE image field
I'm testing a model called Category that looks like this: class Category(models.Model): image = models.ImageField(upload_to='images', null=True, blank=True) ... Category.objects.create(title='test_category', image=Null) But it didn't work....
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