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java - How to set correct time with AM PM with Calendar object?

Simple question why the result is like the following for this code: Calendar cal2 = Calendar.getInstance(); cal2.set( ... times change the result? How to set the time correctly?...

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

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549 views

1 answer

ElementUI表单验证

我做登录功能时，用到elementui的验证功能，如下： this.$refs.loginForm.validate((valid) => { console.log(valid) if (!valid) return false; this.$store ... 跟下面这个链接的问题差不多 https://forum.vuejs.org/t/thi......

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

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535 views

1 answer

php脚本运行没有反应，为什么？

用cmd执行php脚本没有反应，不知道哪里出错了！...

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

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838 views

1 answer

asammdf - how to combine two datasets to make one combined plot in python

I have a dataset of 6 parameters with 500 values each and I want to combine the two of the datasets to get the ... class 'numpy.float64'>'; only Series and DataFrame objs are valid...

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

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672 views

1 answer

vue初学，希望监听flagShowHeadMenuProp值得变化

父组件 trainlist.vue 子组件 menuHeader.vue trainlist.vue 引入 menuHeader.vue <template> <div> <div class="publicList"> <div class=" ... (val) { console.log('val == ', val) } }...

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

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645 views

1 answer

CSS 父元素没有被撑开

<div> <div class="fxxk"></div> </div> .fxxk{ width: 2000px; height: 200px; background-color: green; } 子元素宽度设置的很大，浏览器出现了横 ... 度但如果我在父元素上设置display:inline-block，就可以被撑到2000px了，什么原因呢？...

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

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761 views

1 answer

DolphinDB执行query语句时报错：Can‘t find the object

表quotes已经在DolphinDB中创建，执行下面query语句： select * from quotes limit 5 返回错误信息： Error Message: Can't find the object with name quotes. 请问怎么解决?...

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

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776 views

1 answer

python - How to divide list according to index position?

I have a combined list of lat, lon and alt in a sequence as shown below, now I want to divide the list into 3 ... of them worked. Can anyone help me to get the expected output?...

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

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1.6k views

1 answer

hive - Transpose and add new record in SQL

SELECT COUNT(DISTINCT CASE WHEN customer_name = 'Alex' THEN item END) AS by_Alex, COUNT(DISTINCT CASE WHEN customer_name = 'Bob' ... "by_Alex" (3) and add 5 under "Count" column?...

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

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1.5k views

1 answer

java - Thread call from Abstract Class for child classes?

Hi so I have repetitive Code and want to get rid of it. I want to get rid of the scheduler call (scheduler. ... . scheduler.schedule(this::transition, 10, TimeUnit.SECONDS); } }...

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

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2.3k views

1 answer

通过JavaScript将base64的图片复制到剪切板，粘贴到微信的方案

尝试clipboard.js 也尝试了以下方案 const selection = window.getSelection(); const range = document.createRange(); range.selectNodeContents(element); selection. ... 到微信，求哪位大神做过类似需求，是否有解决方案，多谢...

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

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2.5k views

1 answer

document中有一个HTML和一个html？这是怎么出现的？

今天遇到这样一道题完成以下功能：任意打开一个网页如新浪或者百度，写一段js代码找到网页中所有以h或者H开头的元素，并打印每种元素的个数，如网页中含有head, hr 和 h2 元素，那么打印出类似如下的结果： { hr: ... 问题为什么会有一个HTML和一个html呢，正常代码结构中不是只应该有一个html吗？请问这个HTML是什么，怎么出现的？...

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

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3.1k views

1 answer

reactjs - AntDesign forms or React Hook Form

i was searching which are the differences and the advantages/disadvantages of using one or another but i couldn't ... library or simply use the AntDesign form validation? Thanks...

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

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2.9k views

1 answer

java - Why CrudRepository.save() ignore FetchType.EAGER when returning created object?

I use Spring Data Jpa in my app. There are two entities in the application. The entity Film: //annotations ... lazy references for initialize new Film and try save this film?...

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

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3.5k views

1 answer

java - AndroidStudio Project Compilation Error: Can't download gradle 4.1.1 - Unable to find valid certification path to requested target

I'm completely new to programming and just set up AndroidStudio on Ubuntu inside a VirtualMachine. I set up ... : unable to find valid certification path to requested target...

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

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3.6k views

1 answer

javascript - Vue Firebase: get query range from specific record to the last record

I need to get all the records from a specific record to the last record in my database. ref.orderByChild("date").equalTo(" ... i need all the records from this one to the last one....

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

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3.1k views

1 answer

powershell - ErrorActionPreference=stop stops all scripts stack

Consider the following: // Calling-Script.ps1 Write-Output "Calling script" ./Failing-Script.ps1 Write-Output "Calling ... .ps1 stops? Does this make sense? is it documented?...

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

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3.6k views

1 answer

spring boot找不到maven install的jar包？

我已经用maven安装成功了 mvn install:install-file -Dfile=/usr/local/project/provider-user-0.0.1-SNAPSHOT.jar -DgroupId=com ... >system</scope> <systemPath>绝对路径</systemPath> </dependency>...

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

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3.1k views

1 answer

抓包找到一串bytes的数据怎么解读（求大侠）

想 ... ...

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

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3.8k views

1 answer

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...

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

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3.5k views

1 answer

vant—ui 使用不了了吗？

正常安装 npm i vant - ui -save 就是引用不了vant组件...

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

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3.6k views

1 answer

vue keepalive缓存首页路由跳转滚动条互相影响

### 问题描述项目基于vue+vant，我首页主要是一个vant-tab，tabactive对应相应模块，首页主要就往详情页和一个查看模块全部商品页，我想是把首页缓存，返回首页保存tabActive和滚动条位置目前问题是：我能保存下来跳 ... 不会被滚动条影响就是不明白为什么页面的滚动条会互相影响，位置 tabalive我都能存下，但是复原不了...

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

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3.5k views

1 answer

添加资源失败的请求返回什么http状态码？

添加资源失败的请求返回什么http状态码？找不到合适的 4XX不对请求没有错误 5XX也不对服务器没有错误...

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

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3.8k views

1 answer

javascript - I got a problem with the render, can you explain to me please?

I'm new on the language and i need to do something for friday, So there is my problem : /App.js: JSX value should ... } } export default App; const styles = StyleSheet.create({ });...

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

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3.8k views

1 answer

css 如何实现将小火苗逐渐变成火苗的过程

css 如何实现将小火苗逐渐变成大火苗燃烧的过程...

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

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3.8k views

1 answer

Thinkphp6 在Docker中访问很慢，同样代码服务器上很快

不知道提供的图片够不够，麻烦大家了，研究了半天了慢日志是2s的日志...

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

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3.7k views

1 answer

计算大胃王小明吃苹果数量.(根据时间戳得到区间，然后算出区间值之和)

计算大胃王小明吃苹果数量: 已知小明2020-08-16至2020-09-15的吃苹果的数据如下： *// steps[].step 苹果量 // steps[].timestamp 时间戳* const steps = [{ step: 1753, ... 素判断是否符合条件取出有用的值放入新数组中用来求和，然后写不出来了，谢谢大佬解答...

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

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4.1k views

1 answer

php - Loader.io - all API requests after 120th failing

I am load testing my api using loader.io. Everything runs smoothly at first, with CPU load at 34 - 42%. Then, ... that is causing this issue - does anyone have any suggestions?...

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

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