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870 views

1 answer

linux - Speeding up python mmap using madvise

I used python's mmap to access random locations of very large files fairly quickly. Now I read about madvise() and ... all readline() calls as fast as the quickest ones? Merci...

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

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873 views

1 answer

直接复制aspx页面出现各种错误？

比如有一个abc.aspx（包含.cs及designer.cs），我直接复制了这个文件，并粘贴在同目录下，然后重命名为abc1.aspx，并修改了aspx页面中的CodeBehind，Inherits和cs文件中的class名按理说不会出现问题，但实际开发过程中 ... 最终把文件删除，重新建文件，直接复制代码才解决感觉很是奇怪所以请教一下大家 ...

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

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1.4k views

1 answer

请问这样的效果怎样实现呢？双层页面效果。多个背景图怎样实现的呢？而且他们是相对固定不动的？

网址：http://www.clevermama.com.cn/blank4.html 请问这样的效果怎样实现呢？双层页面效果。多个背景图怎样实现的呢？而且他们是相对固定不动的？如图：...

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

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1.5k views

1 answer

正则动态传值 match方法 js

let reg = 'AbcdEFg'; reg.match(/Abc/i);//这样是正常可以匹配到的但是我想把match方法里面的Abc动态传进去该怎么做呢...

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

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1.6k views

1 answer

怎么更新DolphinDB中的分布式表数据？

我想更新已经存入DolphinDB数据库的一个分布式表的数据，如下图所示：返回如下错误： The table is not allowed to update. DolphinDB中不可以更新分布式表的数据？如果我想更新已经存入分布式表的数据，应该怎么操作？...

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

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2.2k views

1 answer

(?i) 正则表达式报错的问题

正则表达式 (?i)(?=<style(s+|>)) 匹配文本 a <style> b </style> c 报错，没法运行。如果把 (?i) 去掉就没事。不晓得原因。...

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

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1.8k views

1 answer

bluetooth - Unable to unpack

I am getting below errors while parsing BLE packet. Any suggestion how to fix this? Packet b'x04>+ ... a bytes-like object is required, not 'int'**...

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

0 votes

2.2k views

1 answer

matlab - Rearranging cells in a cell array

I have a 16x1 cell array which I would like to rearrange: {'T1' } {'T10'} {'T11'} {'T12'} {'T13'} {'T14'} {'T15'} {'T16 ... '} {'T13'} {'T14'} {'T15'} {'T16'} Thanks for your time....

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

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2.3k views

1 answer

java - Can Google's Places API findCurrentPlace method be used to get the exact current address, rather than the address of the closest 'Place'?

I am currently using the Google Places API within my (Java) Android application to get the current device location and display ... , "Error finding current location"); } } });...

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

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2.3k views

1 answer

Python idle运行requests模块会报验证错误

简单的引入requets模块 import requests requests.get('https://baidu.compile') 以IDLE执行就会报如下错误, 但是在自带终端中执行就没有任何问题. 环境版本: windows10 python3.9...

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

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2.4k views

1 answer

下拉option可以设置最大高度吗，超出显示滚动条

下拉option可以设置最大高度吗，超出显示滚动条...

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

0 votes

2.5k views

1 answer

ie浏览器下vue项目动态改变网站logo不生效问题

在ie下动态设置网站logo，有的时候不起作用，有的时候就起作用，打印出来是有值的，也将图片路径设置进去了，结果logo就是不更新，取得还是默认图片，加了时间戳也不行，在谷歌上就没问题，只有在ie上有问题...

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

0 votes

3.4k views

1 answer

linux - Problem with DB2 Fixpack 11.1 Fp5 installation

I tried to install the DB2 V11.1 FP5 on a SLES-12-SP4 machine. So far I downloaded the universal package extracted ... ? Thanks so much for reading so far best regards Thomas Graf...

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

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2.8k views

1 answer

el-image预览大图删除一张照片后预览无法显示

点击删除按钮后会报错并且预览无图片显示代码：  <el-upload action="#" :show-file-list="false" :auto-upload=" ... ) this.$set(this.imgPreview, this.imgPreview.splice(index, 1)) } } 求解，谢谢~...

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

0 votes

3.2k views

1 answer

python - Pandas dataframe: split long regex into multiple lines

I'm using Pandas for some data cleanup, and I have a very long regex which I would like to split into multiple lines. The ... SWC, RAN CSG, PF 12240-12252, RR (ADDED INFO) Thanks!...

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

0 votes

3.6k views

1 answer

vue display:none,@click @change失效有啥办法解决吗

外层的dom设置了display：none，里面的的插值{{XXX}}都没问题，但是@click @change 都是失效了，请问这是什么问题，感谢，有其他思路解决吗 <div class="tt" style=" ... /form> <a class="sub-tt" @click="submitAfterForm()">下一步</a> </div>...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.3k views

1 answer

请问该函数的返回值为啥是local?

var scope = 'global' function checkScope() { var scope = 'local'; function f() { return scope; } return f; } checkScope()();...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.5k views

1 answer

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 },...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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4.1k views

1 answer

easyswoole无法启动

环境 PHP7.4.3 Swoole4.5.5 Ubuntu20.14 pcntl扩展已有操作步骤根据官方文档： composer require easyswoole/easyswoole=3.x php vendor/easyswoole/ ... " 原封不动的输出了vendor/bin/easyswoole文件的内容，是怎么回事呢？...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

4.0k views

1 answer

vue3中如何实现触发点击事件时，改变子组件的值？

最近在学习vue3的知识，看到了provide和inject，想请教下如何能实现父组件中的一个按钮触发点击事件时，改变子组件的值？我试着把provide写到了点击事件中，会出现下面的警告那么怎么样才能实现呢？...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

3.8k views

1 answer

elementUI后台管理系统左侧菜单文字过长，如何换行展示？

elementUI做的后台管理系统，左侧菜单栏文字太长了，菜单栏宽度已经定了，不能再调宽了，整体会很不好看，现在想让过长的菜单栏文字换行展示，有什么方法吗？我写的css没有效果： word-break word-wrap...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.9k views

1 answer

code-push 如何强制退出登录，删除登录凭证？

# 退出旧的域名失败 code-push logout [Error] connect ECONNREFUSED ****** # 无法登录新的域名 code-push login ****** [Error] You are already logged in from ... 却提示失败，失败后无法登录新的域名请问这如何才能登录新的域名呢？...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

4.2k views

1 answer

Need help running a nested program call from Windows 10 .BAT file without "UNC paths are not supported" error

So here's my situation. I currently have the following directory structure on both: local hard drive D: and on mapped ... with BAT files, so any help would be much appreciated!...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

3.7k views

1 answer

el-tree 不设置复选框怎么设置禁用其中某项？？

需求原因，需要用tree组件做下拉选框，怎么禁用掉其中某项呢？比如不能用本部门作为上级部门。先行感谢！！！...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

4.5k views

1 answer

java - RxJava synchronization

I want to synchronize heavy shared object with RxJava, but I don't know how to do it properly. Unfortunately, I was unable ... counter += 1; } return new ComputationResult(); }); }...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

4.3k views

1 answer

python - Discord.py Trying to take multiple things from and Api and put them into a single Embed

So rn in the api i have it search for an entries with a certain name and get all the following info. All the info ... {item["Port"]}', inline=False) await ctx.send(embed=embed)...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

3.7k views

1 answer

请问这种声波效果怎么实现？有没有这种插件呢？

请问这种声波效果怎么实现？有没有这种插件呢？如图：...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

3.3k views

1 answer

思否上我自己写的文章忽然不能编辑了

如上图所示：我自己写的文章今天忽然发现没有'编辑'入口，真是郁闷，难道文章都要一次成型吗。。。...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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