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Recent questions
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位运算 信息遗失补全问题?
plain为python str转的bytes类型,对plain进行了plain[i]=(plain[i]<<3|plain[i]>>5)在这个过程中原本二进制信息遗失了,若要暴力枚举是应该每个bytes 8个二进制位就是256种位操作实验可以吗...
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maven无法启动tomcat,报错
[INFO] Scanning for projects... [WARNING] [WARNING] Some problems were encountered while building the ... versions might no longer support building such malformed projects....
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Bootstrap tooltip container="body" scroll issue
I used bootstrap tooltip inside of a dropdown menu. I got that dropdown inside hide tooltip issue. So I solve that with ... content go to the top. Refer to the below screenshot....
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echarts折线图的指示线实现拖动
echarts折线图的指示线实现拖动...
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nodejs redis的库都是指定DB,多DB是否就需要创建多个连接?
我看了几个nodejs redis的库,每个配置文件都指定了DB。 比如我一个User的DB,key为UserId,value为用户信息。 我还有一个privilege的BD,我是否就需要在创建一个连接实例? 或者说这种是不是一种最好的方法,因为单看两个影响不大,像正常的开发下应该有几十个DB吧...
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javascript - How to make slide towards left and right on click of arrow in slider?
I have a slider with HTML, CSS, JavaScript. I am using background color as slider, when I click the right and left arrow I ... class="dot" onclick="currentSlide(3)"></span> </div>...
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neo4j - LIMIT not working inside apoc procedure apoc.cypher.run
I am trying to run following Neo4j cypher Query: MATCH (m:Person { id: '$id'})-[:FOLLOWS]->(f:Person) ... 0.8.6 Please find attached PROFILE and EXPLAIN screenshot: PROFILE EXPLAIN...
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flutter - create one class from two class and access all properties
I have one button class. I want to add this button class in container 2 times and it will create one class. Now i want ... style: BlabelStyle(), ), onPressed: onPressed, ), ); } }...
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python - How do I limit the longitude extent in Cartopy's LambertConformal and keep the conic looks?
I would like to produce a Lambert Conic plot focused on Europe. I can do the following: import cartopy.crs as ccrs ... two meridians, and an arch at the lower latitude limit....
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JS怎么实现让输入框内容转换成繁体字?
用下边的简转繁JS怎么实现替换地址栏URL:kw= 后边的内容为繁体?或者实现把input里边value的值转为繁体?在线等大佬出现~ http://www.abc.com/?kw=点 <input id="box" ... >" placeholder="请输入要查询的内容"> 简转繁JS https://www.jq22.com/demo/jsj......
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string - Excel formula to extract a number preceding an x not working
I'm using the following formula to extract the number preceding an "x" from a string (e.g. ##x## where # equals a ... 3x20 seconds Result Blank Any ideas on how to fix this? Thanks...
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linux - Bash script : problem with my substraction
I would like to make a script that will calculate the difference of download time between two curl. For example with this ... is Download : + 185359s. Someone to tell me why ?...
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Jan 25, 2021
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dwm arch linux. How to make key bindings to run Terminal programs
So i was using i3. Now i want to see dwm. Made keybidings to run firefox on Modkey+w. It works well, but now when i want to ... }, { MODKEY|ShiftMask, XK_v, spawn, {.v = nvim } },...
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conditional count of items row wise in SQL Oracle
I posted similar question conditional count in a list of strings in SQL Oracle this time the dataset is row wise but the ... list3 toy 1 list4 cards 2 list5 toy 2 list6 cards 2...
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两个实现多选的逻辑求优化
checked(e, index) { //e:当前状态false或true //index:当前索引 //方法一:a为数组 if (e) { //选中,就把b数组对应当前索引的数据赋给a数组 this.a[index] = this ... 对象属性 delete this.a[this.b[index].uid]; } //把对象数据整理成数组返回 },...
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小程序如何实现多个按钮元素flex两行布局,加上图片多层叠加互不影响?
各位老师好,在学习的过程中,碰到这样一个问题,实现起来比较复杂,不知道该怎么办,求指点 现在主要的矛盾点是,昨天好不容易,解决了小程序按钮添加背景图的问题 ... list .menu-button text{ color: #ffffff; font-weight: 600; font-size: 28rpx; position: absolute; }...
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Jan 24, 2021
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performance - Discussion about block html cache in Magento 1 CE
For my own shame I always was misunderstanding of how cache works. This cache is being checked during rendering of each block as ... points or if I'm not - why is this happened?...
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Converting update statement values dynamically in SQL Server
I have a requirement to convert the value in the update statement dynamically in SQL Server. For example, if I receive value ... '. How I need to implement this in SQL Server ?...
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Converting
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百度的ss1.bdstatic.com用nginx怎么反代?
https://ss0.bdstatic.com/70cFuHSh_Q1YnxGkpoWK1HF6hhy/it/u=3191659576,3761251012&fm=26&gp=0.jpg 这张图片 宝塔的规则 #PROXY-START/ location ~* .(php|jsp| ... GET; 强制将请求转换为GET试了还是不太行,大佬们求份规则...
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java中有比较好的方式去获取某个月中星期几所对应的日期吗?
请教下大家,有一个需求是根据月份,去找出这个月星期几所对应的日期是哪几天?例如给出2020年12月,找出所有周六,那么结果要返回 5、12、19、26这几天,我目前的思路是找出某个月符合条件的第一个日期,然后不断加7天,去判断,不过这样子看上去比较耿直,java8中有没有更好一些的方式或者api提供呢?...
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用gitlab-ci构建部署项目,报错cp: target ' ' is not a directory
stages: - build build: stage: build only: - master script: - cp -r dist/* /mnt/myproj/www tags: - testTag 报错: $ cp -r ... /www' is not a directory 目标主机存在/mnt/myproj/www,不知道什么原因...
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用gitlab-ci构建部署项目,报错cp:
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Axios interceptor 这段 ForEach 函数有什么用?
如下,参数是函数类型的 fn,当条件成立时执行 fn(interceptor),函数是什么功能 ? interface ResolvedFn<T> { (val: T): T | Promise<T> } ... void { if (this.interceptors[id]) { this.interceptors[id] = null } } }...
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python - Django table rendering blank rows
I've searched far and wide, and haven't come up with a solution despite this probably being a simple fix. Models.py: ... just outputs blank rows in the table. What am I missing?...
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astronomy - Algorithms about Perigee and Apogee of Moon
I am trying to calculate perigee and apogee of the moon.In chapter 48 of the book 《Astronomical algorithms》,there is a sentence ... up them all? It seems not to be a good idea....
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有没有做模拟渲染网站的快速解决方案?
由于网站用vue写 很多内容要js执行后得到 比如meta信息 现在需要做一个模拟浏览器渲染的过程 以骗搜索引擎爬虫 有没有现成的开源方案? 题意划重点: 知道ssr和预渲染 但是不想自己写了。。。...
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angular - Child route with fragment
I have a page with a side menu, each side menu item has a routerLink that sends a different fragment. I want to know if it ... : 'child-b', component: ChildBComponent, }, ], }, ];...
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mysql表以key-value形式设计,怎么多条件查询?
如下图显示,想查询 keys字段里的值等于:name,num;和values字段里的值等于:web;范围大于等于2 小于等于5;但是如图的sql查不出数据,怎么办?...
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div内包括多行文本+图片溢出显示省略号进行收缩展开,要如何实现?(非纯文本的情况,v-html渲染)
比如我需要超过8行的文字就溢出省略号显示 文本末尾显示 展开或 收起 按钮 一开始p标签内的纯文本的形式我是采用下面css代码实现的 <p>{{ item.content }}</p> display: -webkit-box; -webkit-box- ... 无法成功收缩为8行,且整个乱掉 请问针对这种类富文本的形式,要如何实现一开始纯文本的类似效果呢?...
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