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java - Differences between Oracle JDK and OpenJDK

NOTE: This question is from 2014. As of Java 11 OpenJDK and Oracle JDK are converging. Are there any crucial ... parameters the same? Does GC work differently between the two?...

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

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490 views

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javascript - How do I reload a command

My discord bot is made with slappey and I read the guide and the command is nowhere near slappey's command handler so ... ) { message.channel.send('testing command works'); } }...

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

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PHP shorthand if echo else assign variable

I want to write this in one line if possible: if ($some_var === true) { $return .= $input; } else { echo $input; } ... I don't want to echo on the true, only on the false....

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

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230 views

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React native target Samsung Galaxy S7

My styling is broken on Samsung Galaxy S7 - I am using react-native-device-info is there a way I can target ... -native-device-info"; DeviceInfo.getDeviceId() //unknown Any ideas?...

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

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987 views

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json.net - Serialize and Deserialize JSON with different property names for different use cases

I have data stored in a database with short field names to save space. When I load these into my .NET Core app, ... can either use the short or long names when convenient. Thanks!...

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

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427 views

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android - ResourceNotFoundException for drawable at launch

Problem Sometimes a crash caused by a ResourceNotFoundException is reported to me. This exception is caused at the ... ="0dp" android:layout_height="0dp" android:adjustViewBounds="...

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

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android - Kotlin : How to update a value of a RecyclerView

I want to update at any time some values in my RecyclerView. Here is my data class ParameterText: data class ParameterText( var ... don't know where to use it. Can you help me?...

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

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php长时间的服务的设计与和前端的交互

要想做一个在线文档预览的功能，查到的方案是先转换成pdf，再使用pdfviewer来预览。文档转换一般需要很长时间，而且需要大量的cpu。考虑并发性是否需要搞一个队列来处理文档转换？另外，如何和前端交互呢？直接ajax等待返回得到pdf的地址，这样ok吗？...

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

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532 views

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laydate 日期插件怎么在vue中引进

这个是网上下载的laydate文件，放在了我的项目中的assets目录下这个是我的main.js下引进但是使用后没有任何效果，在mouted中使用这个方法 laydate({ elem: '#demo' }) 会提示我laydate未定义？这个laydate插件在vue项目中怎么使用...

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

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317 views

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vue中如何引入d3.v4.js文件?然后再导入.csv文件

vue中如何引入d3.v4.js文件?然后再导入.csv文件.....这里引入一直报错...

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

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227 views

1 answer

TypeScript: Return the typing of the input object

Let's say I have a function that receives a callback and it will return the object returned by the callback, Is there any ... the key of A, so for type-safe, they are required....

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

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354 views

1 answer

angular2如何在业务的ts文件中引入新安装的模块？

在一个老项目里，现在需要一个新的模块，我在package.json里添加了依赖包，然后install到node_module里了如何在app/src下的业务ts文件中import这个新安装的模块？比如这个 import { ... ，没有直接克隆官网的开始模板，里面没有systemjs，这样的话如何半路加载新模块呢 ...

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

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551 views

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如何通过try catch 监测浏览器是否实现某个功能，如果实现将其调用否则进行提示。哪位大神教教小弟呀！

类似于QQ之类的应用的。...

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

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418 views

1 answer

请问，在函数参数里面加：和？是什么意思？

请问，在函数参数里面加：和？是什么意思？还有function 定义函数后面是不是{}，而是： es6的数据解构中没看到，是我看漏了吗？求各 ... if (redirectedFrom) { route.redirectedFrom = getFullPath(redirectedFrom) } return Object.freeze(route) }...

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

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272 views

1 answer

微信IOS传播类菜单显示问题

在微信6.5.6的版本中,使用webpack+vue构建的单页面应用,在刷新完页面后微信右上角菜单被隐藏,无法显示(即使调用wx.showOptionMenu()),官方有如下的公告: 三：有使用JSSDK，并且使用了wx.config进行权限授权 ... 是由此问题引发的,有没有遇到此类问题并解决了的小伙伴?(ps:微信也没有个论坛或者提issue的地方)...

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

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345 views

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setInterval （function(){},delaytime）执行后 delaytime还可以修改吗

var timer = setInterval （function(){},delaytime）; 当这个定时器执行后，还可以修改这个定时器的 delaytime 值吗？想解决的是让这个定时器的步伐变慢，是否有简便的方法...

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

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225 views

1 answer

Get launch configurations from vscode extension

How can I get all launch configurations? I considered reading the launch.json file in the .vscode folder, but ... json file present anywhere. How do I get these configurations?...

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

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375 views

1 answer

android - Set blurred BitmapDrawable as background of rounded CardView

I'm currently creating an app which shows the user some data on CardViews. Now I want to give the user the option to ... ); } But with this the CardView ends up looking like this...

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

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879 views

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weex stream feach 如何设置 timeOut 时间

weex stream feach 如何设置 timeOut 时间，访问数据接口需要时间比较久，原生设置 TimeOut 时间久一点是可以获取返回数据的，但是 stream 会直接返回请求出错...

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

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806 views

1 answer

mocha.js - NodeJs,expressJs: webpack error : TypeError: mocha.useColors is not a function at configureMocha

I am using : { "webpack": "^5.11.1", "mocha-webpack": "^2.0.0-beta.0", "nyc": "^15.1.0", } and ... in testing I am using node v12.13.1 and express 4.17.1 terminal screenshot...

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

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511 views

1 answer

performance - Flutter: Can one split FutureBuilder build method from the parent Widget's build function?

Flutter recommends against splitting up a long build method into smaller methods, as Flutter uses the build method to ... off my builder method as shown in my first example?...

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

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130 views

1 answer

javascript - Change CSS background from JS/jQuery

.u-section-1 { background-image: linear-gradient(0deg, rgba(0,0,0,0.2), rgba(0,0,0,0.2)), url("images/ ... change doesn't occur. Thank you in advance for trying to help me....

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

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269 views

1 answer

这个到底是不是闭包？

在立即执行函数中直接执行show，chrome显示为闭包，而show是在词法作用域里面执行的，好像有在词法作用域外面调用才会形成闭包，不知道我的理解对不对？ ... by pragmatic observations. "scope & closures": ch5,'Nitty Gritty' example is diffrent from chrome...

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

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226 views

1 answer

javascript - How can I set a date range filter on my table?

Hi I'm using jQuery Datatables. I want to add a date range filter to upper of table. Here's my code: <link href="~/ ... to make this date range. How can I make it filter? Thank you...

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

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412 views

1 answer

mediatr - CQRS: getting an information needs to write to database. Which type is it?

Getting auth tokens (jwt, refresh token) needs to write refresh token to the database. Which type is it command or query?...

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

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362 views

1 answer

webstorm+babel编译es6的问题

PS： webstorm+babe 配置完成后会自动监听Pes6语法；每一次保存都会编译一次；先看第一次撸完代码后编译的目录结构这样是没错的，但是继续撸代码，他又会继续编译，然后目录结构就成下图这样了在webstorm下安装babel之后会自动 ... 它自动编译完覆盖之前编译的呢？而不是一次次嵌套我感觉是这里的问题，但是许久调试还是没有决解，求赐教...

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

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371 views

1 answer

禁用windows的自动同步时间无效，系统仍会自动同步时间

因为开发调试需要，要把本机时间调到几个月后。调完后，我已禁用了windows的自动同步时间功能，并且已修改了注册表中控制同步时间间隔的字段（见下图），但是每次调完时间后，过一会时间又会被同步，不知道如何解决？...

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

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150 views

1 answer

angular中可以在ng-click中直接调用service的方法吗？

代码如下： <!DOCTYPE html> <html lang="en" ng-app="myapp"> <head> <meta charset="UTF-8"> <title>Angular学习</title> <style type="text/css"> ... 一个方法返回，而直接调用service里面的方法，可我试了不起作用，这是为什么呢？...

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

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