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501 views

1 answer

假设现在有10个td的json对象,td的colspan属性值取1-3, 现在要把它们变成td放到tr中. td的colspan为1时,tr里放3个td,colspan为2时,tr里放两个td.colspan为3时,tr里放3个td. 怎么做到?...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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386 views

1 answer

chrome中有没有控制特定网页不缓存的插件

比如我想让localhost开头的网页都不缓存js和css，有没有相关插件能实现...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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598 views

1 answer

用swift发起一个请求请求地址是自己通过命令行创建的免费SSL证书，结果

let headers = [ "cache-control": "no-cache", ] let request = NSMutableURLRequest(url: NSURL(string: "https://127.0. ... (httpResponse ?? "Default Response!") } }) dataTask.resume()...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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409 views

1 answer

怎么设置html5 datalist点击事件

怎么设置html5 datalist点击事件 <input type="text" list="country" /> <datalist id="country"> <option value="Afghanistan"> < ... <option value="Andorra"> <option value="Angola"> </datalist>...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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107 views

1 answer

Docker approach for multi-conditional pipeline

I'm completely new in Docker. I have the following idea in mind: I need to provide single image that will ... if-else conditions for selected in runtime python version and profile?...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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587 views

1 answer

phantomjs 内存泄漏的问题

各位好，菜鸟这里想通过phantomjs + scrapy爬取网站，但发现随着爬取页面的增长，phantomjs 的内存使用量也一直增加直到内存耗尽，搜了一圈无果现在 ... , in do_open raise URLError(err) URLError: <urlopen error [Errno 111] Connection refused>...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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379 views

1 answer

关于这个求三次方程的程序的问题？

#include <iostream> #include <stdlib.h> #include <stdio.h> using namespace std; float a,b,c,d,ans[4]; int n; float equ(float x) { return (( ... 的数都可以使函数值在1e-4以内从而使某一个根的几个临近值占据了ans？...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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453 views

1 answer

关于javaweb项目瘦身问题，前期开发后，发现项目占用存贮空间太大，差不多1.2个G，怎么实现瘦身，动态页面主要是jsp。

1.怎样将系统的页面进行动静分离，导入jsp分离 2.项目WebRoot结构如下：图片描述 3.怎样将这些插件和静态文件分离，不放在webroot目录下，可以自行配置存放地点可以用nginx来实现吗本人没有学过nginx,求大神指点很急 ... ，这样怎么实现啊 4.每一个jsp并不大，但是不知道项目为什么会占这么大的空间，所以需要瘦身，求大神指点...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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346 views

1 answer

Can QEMU catch accesses to non-existing RAM on a Cortex-M processor?

is it possible to have QEMU report read or write accesses to non-existing RAM for a Cortex-M machine? Maybe a log ... reading or writing. Any help will be highly appreciated. M'...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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645 views

1 answer

为什么给对象赋值成null了还会触发事件？

比如下面这段代码 var box = document.getElementById("box"); box.onclick = function(){ console.log(111); }; box = null; 为什么我将box赋值为null了，还 ... 赋值为null就可以，onclick不是属于box的吗？，还望各位大牛能给个合理的解答，谢谢 ...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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542 views

1 answer

如何让mysql插入数据的时候key相同，对应的count数值就相加？

cur.execute('insert into keywords(keywords, count) values(%s,%s)', (key, from_url_dict[key])) {key1:10,key2:100} {key1:30,key3:100} 前面是 ... 如何让mysql插入数据的时候当存在key相同时，对应的count数值就相加？...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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495 views

1 answer

babeljs - Webpack + babel configuration builds empty output file

I have the following configuration: package.json { "name": "webpacksetup", "version": "1.0.0", "description": "", "main": " ... 2, 3]; }; Any idea what I'm doing wrong? Thank you...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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227 views

1 answer

ios APP能不能打开微信然后通过微信跳转到指定的URL？

代码如下： /** 跳转到微信，并打开指定的URL @return <#return value description#> */ +(BOOL) openWeChat:( ... sharedApplication] openURL:[NSURL URLWithString:headString]]; return FALSE; }...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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508 views

1 answer

使用Vue单文件组件，里面引用组件需要至少写3次，有没有更简便的方法，让组件全局可以直接用

如图：...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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212 views

1 answer

reactjs - what are the differences in the downstream effects between these 2 different imports?

I'm working on an app and a previous developer imported React into a component like this: import * as React from 'react'; I ... * causes the page to require a few more ms to load?...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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315 views

1 answer

How to gain access to LinkedIn Live Video API?

The LinkedIn Live Video API documentation appears to be under the Marketing Developer Platform (MDP), however the MDP ... a separate application process for the Live Video API?...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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183 views

1 answer

node.js - How to check if Image file is really included in Request in expressjs

I am building an API using ExpressJS.In one of the endpoints I need to create an account with an optional avatar. So, I want to ... ; } else { console.log("No Avatar Found"); } },...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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507 views

1 answer

dataframe - R: Imputing NAs with random choice of female or male

I am working in R. I have a data frame column with female or male and some NAs. Now, I want to randomly ... randomly assigned either or. How do I do that? Best, corkinabottle...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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579 views

1 answer

怎么修改select下拉option的样式不想自己用div模拟再写一遍了有办法吗

需求如下：哪位同僚会改教教我呗@~~@...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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536 views

1 answer

iphone safari 浏览器 input focus 问题

我给网页限制高度为100%，在底部绝对定位了一个输入框，在ios的Safari中，当点击输入框时，可以弹出虚拟键盘，并把整个页面给顶了上去，但是至少输入框在键盘上面，可以看见。但是如果通过js 的 focus 弹出键盘，键盘将会直接掩盖页面下面部分内容，输入框直接看不见了，为什么focus和直接点击输入框不一样呢，怎么解决，有人知道吗？...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

286 views

1 answer

node-gyp build

node-gyp configure时不报错，node-gyp build时报错...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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516 views

1 answer

如何用python实现《多社交网络的影响力最大化问题分析》中的算法？

作为一名python小白，导师让我用python实现论文中的算法，对于其中所要求的技术点以及如何实现算法显得一头雾水目前python过完廖老师的python教程，正在看networkx文档望各位帮我解决以下问题： 1.实现算法 ... 应对此类论文 3.数据挖掘方向学习建议论文地址： http://cjc.ict.ac.cn/online/o......

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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585 views

1 answer

onclick 事件点击将ask()直接写入和调用的区别

window.onload=init; function init(){ var x=document.getElementsByTagName('a'); for(var i in x){ x[i].onclick=function(){ return ... return confirm('are you sure?'); } 求教三种写法的区别...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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533 views

1 answer

typescript - How to abort early with Type instantiation is excessively deep and possibly infinite

type PathFinder< TFieldValues, Key extends keyof TFieldValues = keyof TFieldValues, > = Key extends string ? TFieldValues[ ... abort early so this error can be avoided? Playground...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

490 views

0 answers

java 中 valueChanged 具体用法含义是怎样的？

我在看apache eagle源码的时候，看么了很多地方用以下结构： public void setConfig(String config) { this.config = config; valueChanged("config"); } 很多地方都用到了 ... 样的结构，请问这个valueChanged具体有什么用啊？网上查资料也没有查到相关内容 ...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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247 views

1 answer

vscode如何设置element ui标签内的缩进？

如图，，标签内的缩进太多了，感觉很不整齐，请问应该如何设置呢？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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247 views

1 answer

JavaScript里，什么时候回调函数可以这么写？

源代码 function getCurrentTabId(callback) { chrome.tabs.query({active: true, currentWindow: true}, function(tabs) { if(callback) callback(tabs. ... ) { alert( "[" + tc + "]"); };...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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307 views

1 answer

vscode如何设置element ui标签内的缩进？

如图，，标签内的缩进太多了，感觉很不整齐，请问应该如何设置呢？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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