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c - Fatal Error Assertation Failure when using _write with winsock and buffer

--Answered now through comment, thanks to all who helped out-- Apologies in advance for my lack of knowledge, C isn't my ... needed to make it more clear, I can always submit it....

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

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python如何搜索字符串

想在一个string里面查找一些关键字及其后面的一些数据，应该怎么做？比如： { "status": "1", "count": "612", "info": "OK", "infocode": "10000", "suggestion": ... 举了个例子，我想要 location'和后面的数字，但不要其他的字符（包括 location'）应该怎么做？...

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

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android - Since I created my second table I get: Room cannot verify the data integrity

I already followed approaches from Room cannot verify the data integrity . I tried rebuilding project and deleting my app ... (name = "image_path") val imagePath: String? )...

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

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windows上使用docker来构建php mysql环境性能上和使用vagrant管理虚拟机的环境有提高吗？

主要的问题如题我现在的电脑是部署了vagrant来管理的一个php开发环境的box 最近想使用docker来进行部署php开发环境原因是docker消耗的资源更少，性能更好但是了解了一下windows(win10家庭版)下部署 ... 使用虚拟机通过NFS把mysql的文件夹挂载的本地目录总是启动不了Mysql,每次都说那几个log文件有问题 ...

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

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php正则匹配一个Mardown语法的链接？

请教各位大大 php 这样一段正则怎么写？ [百度](http://baidu.com/) [](http://baidu.com/) 通过怎样的正则？能够使 [name](url) 转为： <a href="http://baidu.com/">百 ... 任意中英文字符或者是空，url 可以是 [a-zA-z]+://[^s]* 这样简单的匹配 ...

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

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v-for=“item in items”，把是双数的index的item剔除，不参与遍历

v-for=“item in items”，把是双数的index的item剔除，不参与遍历。。。。是用过滤器。。还是自定指令...

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

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怎样在 js 中解析带注释的 json

拿到 json 字符串，包含注释，怎样能简单的解析。...

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

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208 views

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vue.js - Dynamic routing by id

I am trying to display content based on the ID, I am trying to make the id switching from my menu. I am having trouble ... {{ msg.description }} span#time.mb-0 {{ msg.timestamp }}...

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

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Python Walrus Operator in While Loops

I'm trying to understand the walrus assignment operator. Classic while loop breaks when condition is reassigned to False within the ... while x := True: print('hello') x = False...

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

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js中单双引号的嵌套问题

if(checkmethod=='isNumber'){ var result=eval(checkutil+'.isNumber("'+checkdata+'")' );//相当于计算UtilTest.isNumber(checkdata) }else if(checkmethod==' ... 生效就行，但是真觉得这样不太好，所以想问个明白拜托大家啦...

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

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in Java HV000030: No validator could be found for constraint 'javax.validation.constraints.Email'

I am trying to send html email notification when user submits a form but I am getting an error. Can you please look ... 11.Final</version> </dependency> Thank you for your help!!...

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

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移动端Web如何实现IOS双击事件。

问题：图片绑定了一个双击事件，双击可切换放大/缩小查看图片，在安卓手机正常响应，但在Chrome浏览器模拟器里双击事件不响应，在苹果手机也不响应；使用的是vue的事件绑定v-on:dblclick ... </div> </div> <div class="bottom-text"> {{ photo.description }} </div> </div>...

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

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Compiling PHP 7.4.13 on CENTOS 7 gives error

I am trying to upgrade PHP 7.3.9 to 7.4.13, while compiling it gives below error -lcrypto -lcrypt -o sapi/ ... xsl --without-libzip Can some please help how to resolve this issue...

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

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我的事件被重复触发了么? 如何销毁？

如图，在控制台中看到了“resize”这个事件被重复调用了这么多次，好像没有一直被销毁！然后看这里的源代码，源码销毁事件成功执行了吗？为何会有这么多的事件被重复调用呢...

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

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python - exporting html data in json format

Consider this simple example import pandas as pd import numpy as np import requests from bs4 import BeautifulSoup df = pd ... down with so many weird html characters... Thanks!...

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

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PHP里的函数，能不能靠字符串的拼接和转化来实现？

1 我想让两个字符串拼接成一个函数，不知道能不能实现？或者说一个和函数一模一样的字符串能不能转换成函数? 2 举个例子，decbin()是一个Math函数，用来将十进制数转换成二进制数 <?php $a=decbin(10); echo $a; ... 一个函数 4 貌似我思路不对？函数不属于任何类型，所以字符串无法拼接再转化成函数？请求各位大神解惑！...

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

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html - How to lock text onto an image without it moving around?

Im trying to figure out how to lock text onto a specific part of an image, so that if the image moves the text will move ... : none"><font color="black">inspo.mp4</a> </p>...

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

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discuz注入问题

最近运营的一个bbs站出现了一个问题，主题帖子的点评一栏被注入了，所有登录用户看到的该点评的作者都是本人，但是我查看点评回复表后，发现数据表（pre_forum_postcomment）该点评信息一行的author为空，authorid为0，但是这个表的约束明明是所有列都not null，所以就比较郁闷了，不知道是怎么一回事？...

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

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html5 input标签 type=month 如何设置选择面板只能选择月份

看到篇文章里介绍用h5的input标签 type=month可以实现下拉选择月份，我搜了一下貌似选择界面里还是有日期的，只是input的value是某年某月，看了下shadow dom里面也找不到选择面板的组件，能不能实现选择界面只有月份选项？求助，回家补图。...

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

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1 answer

Plotting Predicted Probability from Logistic Regression Model in R

I am a new student to R trying to build a logistic regression model for data set building. The model is ... various forums/similar questions but am still struggling. Thank you....

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

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279 views

1 answer

闭包的问题求高手讲解下

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

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316 views

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node.js - How to ensure the date string is in ISO 8061 format in javascript

I have to understand whether the given string is in YYYY-MM-DD format. I was tetsting using the following code ... would be a neat concise way to determine this in javascript....

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

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464 views

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火狐第三方协议应用程序调用

如下的 a 标签，href 使用了自定义的 HYTHTTPAUTO，会调用本地的一个可执行程序 <a class="tool-btn right" href="HYTHTTPAUTO://somthing"> 现在问题是，在火狐中每次刷新后需要点击两次才能打开应用程序，而在 chrome 中一切正常...

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

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javascrit中Math类的floor函数中表达式（先除后乘，先乘后除）结果不一致？

如上图实例：a.先除后乘 b.先乘后除为什么结果不一样呢...

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

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类似“%22%3A%22”这样的字符串怎么解码？

怎么才能知道“%22%3A%22”这样的字符串实际上是什么字符串？怎么解码？...

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

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238 views

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为什么不能按变量名打印内容？

请教为什么无法通过变量名获取打印的变量内容呢? <!doctype html> <html> <head> <meta charset="utf-8"> <title>无标题文档</title> </head> < ... /button> <button>按钮2</button> <button>按钮3</button> </body> </html>...

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

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382 views

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请问js如何实现PV、UV统计

请问js如何实现PV、UV统计，想做一个类似于百度统计的插件，应该怎么做呢...

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

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372 views

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mysql - I am using webmin server. and issue is facing file uploading problem in php

My code working good in xampp server but I move all directory to webmin then all functions working good but only file ... = true) { header('Location:upcoming-refreshers.php'); }...

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

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