Hot questions

0 votes

2.2k views

1 answer

scipy - Only size-1 arrays can be converted to Python scalars: Integrate.quad Vs Integrate.quadrature

I'm trying to calculate an integral. When I use the function scipy.integrate.quad the code works perfectly. However, ... : only size-1 arrays can be converted to Python scalars...

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

0 votes

1.3k views

1 answer

vue 孙组件$emit 方法以后，根组件（父组件）能直接获取吗？

vue 孙组件$emit 方法以后，根组件（父组件）能直接获取吗？...

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

0 votes

2.5k views

1 answer

Angular 类似 vue-element-admin 的模板项目

看到 vue-element-admin 项目做的不错，不知道 Angular 有没有类似的项目？最好是 Angular + antd 的。...

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

0 votes

2.5k views

1 answer

golang http keeplaive的疑问

场景: nginx侧: nginx作为proxy,然后后端是golang的http服务 nginx使用upstream配置了两台golang的http服务 nginx配置了keepalive_timeout 遇到的问题: nginx的error信息里面报错 ... 阅资料仅仅看到怎么关闭keepalive,却没有看到配置keepalive的时间, 以及默认值...

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

0 votes

1.3k views

1 answer

C# Google Calendar API - Credentials/Microsoft Account

Well, my problem is that I have to register the calendar in my personal google account which isn't a problem but... ... = credential, ApplicationName = "Deadline calendar" }); } }...

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

0 votes

3.2k views

1 answer

redis incr失效并发问题

如果再并发环境中incr的key 失效了使用set从数据库导出数据填充,会导致数据缺失,如果把数据库的数据之间incrby数据会可能会导致数据过多,这个大佬们一般是怎么解决的...

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

0 votes

2.2k views

1 answer

java 泛型设计这样有问题吗？

List<String>[] FounderComs = (List<String>[]) new ArrayList<String>[4];...

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

0 votes

2.4k views

1 answer

微博的cookie怎么刷新

模拟登陆后能获取到cookie，也能正常发博，就是cookie一天就过期，怎么刷新呢？什么时候会刷新cookie？...

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

0 votes

1.6k views

1 answer

vue能否动态绑定一个class同时满足两个条件？

...

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

0 votes

1.4k views

1 answer

vue项目中dom元素上的版本属性是通过什么方式添加上的？

如图，html和css中的版本信息是怎么添加上去的？...

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

0 votes

3.3k views

1 answer

convert pandas series (with strings) to python list

It's probably a silly thing but I can't seem to correctly convert a pandas series originally got from an excel ... , "SavingsCalcsProvided", "BiMonthlyTest"] What am I doing wrong?...

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

0 votes

3.0k views

1 answer

关于vue图片加载的问题？

图片需从后端(nodejs开发的后台服务)的接口经过查询后才返回，前端(vue)该如何动态的展示这个图片目前是采用静态资源的形式，但是感觉这样不太严谨 img.src = 'http://localhost:9000/public/images/'+this.data.stuFile...

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

0 votes

1.4k views

1 answer

android paho mqtt 同一界面多次进入，仍然会请求上次进入界面的主题？

假设首次进入设备01 的设置界面读取了实时的设置，返回列表再进入设备02 的设置，sdk先发一次 02 的主题，再发一次01 的主题，最终显示的数据是 01 的数据。试过在 onDestroy 中取消订阅、断开连接，都不太合适。，...

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

0 votes

2.9k views

1 answer

vue组件内方法抽取问题

有几个组件里都使用了一些方法，都写在methods里了。这些方法里用了很多data里的变量，有很多this.xxx this.yyy this.zzz等等，大概有10个变量。我想把这些方法提出来放到一个js里，然后import到vue组件里。但这些方法内部的变量怎么提取出来呢？都通过传参传进去吗？...

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

0 votes

3.4k views

1 answer

mysql怎么查询5分钟粒度的时间轴数据？

现在设备每1分钟会上送一次采集数据存到数据库，现在想按5分钟的粒度（比如4:00 4:05 4:10）为时间轴，查询每个时间节点附近的数据库内的数据作为该时间节点的数据，怎么用一条sql实现？示例数据库数据: 4: ... :42 j 4:10:50 k 4:11:55 l sql查出的数据: 4:00:00 a 4:05:00 f 4:10:00 j...

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

0 votes

3.6k views

1 answer

关于typescript声明文件

设置了index.d.ts声明文件还是不行，仍然报错。哪里配置的不对么？求大佬告知~~~...

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

0 votes

3.4k views

1 answer

技术细节记不住怎么办？

比如一些常用命令总是要查文档比如前端框架的约定写法也总是要看文档一些技术细节问题看资料的时候能看懂但是过一段时间不接触就会遗忘技术上的细节记不住是我不适合做技术么还是方法不对？...

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

0 votes

3.1k views

1 answer

scss 火狐浏览器异常时为什么？

火狐：谷歌：使用的是scss，但出现不同样式，是不是火狐对scss不兼容？...

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

0 votes

3.6k views

1 answer

一次失败的 http 请求

后端的接口是通的，用 postman 也可以跑成功，或者放到浏览器里也有响应，但是前端请求失败，上面是抓到的 HTTP 相关信息初步排除跨域的问题（不排除有这个可能），因为 options 请求是能正常发送，且能响应 200，来问下大家有没有什么解决问题的思路...

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

0 votes

3.5k views

1 answer

How to translate a 2007 sympy/sage/python code to a modern day sympy/python code?

Me struggling with the General Number Field Sieve : round 2 ! As usual : english is not my first langage so 'sorry for bad ... to do it, it would save my code. Thanks a lot !...

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

0 votes

3.9k views

1 answer

java map赋值报错

Map <String,String>headers = new HashMap<String,String>(); headers=new unitting().headers(); package utils; import java.util.HashMap; ... unitting().headers(); 这里直接map 复制报错这是为啥...

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

0 votes

3.7k views

1 answer

tensorflow - When is RefSwitch used instead of Switch in TF?

I am trying to understand what is RefSwitch and other Ref ops. I am looking at a graph of while loop unit-test in tensorflow ... to add an image of the graph but i can't add yet....

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

0 votes

3.9k views

1 answer

cplex - How to run multiple .dat files in the same model with using flow control?

I have a MIP model in CPLEX. I try to use a heuristic algorithm with using flow control. I need to use multiple ".dat ... do not get this error. How can I handle with this problem....

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

0 votes

3.4k views

1 answer

我怎么在FormItem的label后紧贴着加一个icon？

<FormItem :label="$t('pricePage').product.title" prop="product" > <Icon type="ios-help-circle-outline" /> <Select v-model="priceForm.product" > 我想把icon紧跟着英文后面，然后select框不被顶下去要怎么做？...

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

0 votes

3.4k views

1 answer

html - How to simulate outlook clients

Its 2021 and this is painful. Is there anyway for me to quickly preview a HTML email? Litmus is too expensive to justify at the moment. Is there any alternatives?...

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

0 votes

3.7k views

1 answer

多个markdown文件怎么统计字数？

目前使用的markdown工具是 typora，只能显示每个文件的字数，怎么合拼统计？或者使用其他方法...

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

0 votes

3.7k views

1 answer

数据大屏项目是每个项目只有一个页面吗？

前端开发数据大屏项目，是每个项目只有一个页面吗？还是项目里有好几个页面？比如一个地图为主的大屏页面，还有一个折线图柱状图为主的大屏页面，这俩页面是放在一个项目里还是分别起一个项目呢？如果是放在一个项目里的话，我看一般大屏页面上都没体现能跳转的按钮，都是怎么跳转的呢？还是说一个大屏页面一个项目？...

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

0 votes

3.2k views

1 answer

请求能正确发到服务器嘛？

假设服务器公网地址是 122.33.21.3 服务器部署了一个web服务在80端口在服务器上有一个后端服务在7001端口当用户访问122.33.21.3:80的时候前端的请求base是localhost:7001 这样写的话用户在本地打开请求是用户电脑7001端口还是远程服务器的7001端口？...

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

Categories

Just Browsing Browsing

Most popular tags