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239 views

1 answer

c# - Is there a way to set the time format in xamarin.uitest?

I'm testing a time picker and I want to test one time the AM,PM format and one time the 24 hours format, is there a way to set android date format via the xamarin.uitest project ?...

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

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487 views

1 answer

使用ThreadPoolExecutor并用Threed.sleep模拟任务执行，实际sleep实际不准确且远长于设置时间

问题描述我自己创建了一个ThreadPoolExecutor，并且在执行任务时使用Threed.sleep(2000)模拟任务执行的时间消耗，但是在实测当中Threed.sleep(2000)的等待时间除了开始有些是2s以外，后续等待时间越来越长，甚至超过一分 ... }); } 实际结果疑问查询了下没找到相关描述，非常疑惑这个地方为什么差距会这么大 ...

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

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554 views

1 answer

为什么这两个打印出来都是地址，而且都是一样的，却不能用== ?

如图: 但是，加上一个[0]就可以了难倒是因为 &a 是表示的整个数组的地址，只是打印的时候只打印了首地址。...

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

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419 views

1 answer

css 中带有「--」前缀的属性是什么意思？

这是我在一个网站上翻源码看到的，很奇怪，没见过这种用法，有知道相关资料的吗？...

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

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270 views

1 answer

Nginx配置中user设置为nobody有什么用？

Nginx配置中有一个关于user的设置，看到有的配置为： user nobody nobody; 这个对应的权限是怎样的呢？...

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

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288 views

1 answer

jquery源码i为什么喜欢放外面

例如这段，在其他很多地方也是，把i放在外面，而不是放在for里面 grep: function( elems, callback, invert ) { var callbackInverse, matches = [], i = 0, ... elems[ i ] ); } } return matches; }, jquery源码这么写到底有啥好处...

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

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459 views

1 answer

关于 python 中的 is 和对象引用的问题

print(id({'a': 10}), id({'a': 10})) print({'a': 10} is {'a': 10}) 如上代码为什么第一行 id 相同第二行却输出 False？另外之前学的是 js，内存不是很了解，也就大概 ... : 10})) ##?4429296 为什么会出现这种现象，为什么引用一次之后地址就变了？望大佬指点，先谢过！...

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

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221 views

1 answer

c# - converting byte array to Mat

I have a CCD driver which returns IntPtr to me. I used Marshal.Copy to byte array (bytearray_Image), each element ... image. Is there any ways to do such conversion efficiently?...

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

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254 views

1 answer

webpack 编译时 require 能不能保留？

我在尝试写个框架，框架目录旁边是我的测试应用目录。希望在框架中动态载入应用中的 js。用了 fs 遍历 js 文件，然后 require。但是我发现，一但框架被 webpack 编译，我就没法正常使用 require 载入应用中的 js 了。何解？...

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

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205 views

1 answer

node.js SQL Insert Into with array

I'm new to Node.js and I've hit a roadblock I can't figure out. I'm trying to add an array to a SQL table using an ... ) VALUES (1, 3, 2); ` Any suggestions what I'm doing wrong?...

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

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337 views

1 answer

android - React-Native Horizontal Scrollview not working but works well with vertical

I am new to react-native. I want to achieve a horizontal scrolling of list. When added horizontal the scrolls won't work. ... . The above code works well in iOS but not in android....

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

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323 views

1 answer

python 3.x - Negative Infinity or positive infinity in loss function in Regression

My output is showing infinity or negative infinity for loss function. It should be 0 or 1. w = np.random.randn(6) x = ... for y. it shows -inf or inf Can Someone explain me this?...

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

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256 views

1 answer

html背景图平铺，并且下边无限延伸

这张背景平铺并无限向下延伸...

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

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183 views

1 answer

java try with resource 难受

之前把 try 都改成了 java try with resource 形式现在有新需求，发现无法实现，难道又要改回来？ try( Handler api = getHandler() ) { // 做点啥 api.getState(); ... 下多做一点操作， java try with resource 形式是不是就没法写了？？？那也太鸡肋了 ...

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

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410 views

1 answer

Vue里，element UI 是可以在main.js 或者router.js里引入吗？

Vue里，element UI 在main.js 或者router.js引入都可以吗？有什么区别吗？谢谢...

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

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602 views

1 answer

mysql - UnhandledPromiseRejectionWarning: Error: Entity metadata for Category#products was not found

I looked at other issues that throw the same error, but none of then worked for me. I tried rename, ... (/home/guilherme/Documentos/Restore/node_modules/tslib/tslib.js:141:27)...

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

0 votes

230 views

1 answer

django - How to Create custom permission classes?

models: class DoctorProfile(AbstractBaseUser, PermissionsMixin): id=models.AutoField(primary_key=True) name = models.CharField( ... give is_doctor permission ,only create task ??...

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

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303 views

1 answer

JavaScript: 块作用域是函数作用域的子集?望得到解答.

插图中来自红宝书第四版的一小段:(第26页) (图中分别是中英的版本,我都有认真去看) 如图是正在看红宝书第四版的一小段,这里说: 块作用域是函数作用域的子集 Block scope is strictly a subset of function ... 前面的矛盾了. 因此,我认为应该是作者的笔误了,应该调转过来才对: 函数作用域是块作用域的子集....

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

0 votes

503 views

1 answer

Vue-cli构建Vue项目为啥报那么多警告？

如题,创建的速度还非常慢，我记得以前不会这样啊！是我搞错了什么吗？...

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

0 votes

480 views

1 answer

Vue for 循环同一个组件，只有最后一个组件起作用

Vue for 循环同一个组件，只有最后一个组件起作用这里是循环出来的组件代码这里是组件点击事件...

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

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749 views

1 answer

apache2 - Reset project directory of apache web server virtual host having let's encrypt ssl certificate installed

I have a website www.example.com that is hosted on apache2 web server in /var/www/example.com directory and the virtual ... then it shows 404 error. How can I solve my problem?...

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

0 votes

346 views

1 answer

java - The prefuse edge arrow didn't show up. Even i set up the code for the edge arrow

In order to make the edge with the arrow, I set up some line of codes in the GraphView.java example. ... () { public void actionPerformed(ActionEvent e) { dialog.setVis...

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

0 votes

816 views

1 answer

umi路由通过什么属性实现路由跳转 router.push('/xxxxxx')?

我看了ant design pro 文档上面说是 import router from 'umi',直接router.push('/xxxx'); 新版本中并没有router 现在需求是 if(true){ router.push('/xxxx') } 请问用什么方 ... 码粘贴代码文本（请勿用截图）你期待的结果是什么？实际看到的错误信息又是什么？...

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

0 votes

755 views

1 answer

asynchronous - asyncio -- RuntimeWarning: coroutine 'MyStreamConsumer.handle_timesale_equity' was never awaited

When running this code I get this error: RuntimeWarning: coroutine 'MyStreamConsumer.handle_timesale_equity' was never awaited -- I ... __name__ == '__main__': asyncio.run(main())...

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

0 votes

509 views

1 answer

python - nn.LSTM() received an invalid combination of arguments

I use lstm from pytorch in my code to predict time series. while i write this code class LSTM_model(nn.Module): def ... cost = cost / len(dataset) return cost Thank You in advance...

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

0 votes

686 views

1 answer

terminal - Trying to create new flutter project

Hi I am new to fluter just starting out. I am trying to create my first flutter app with these steps: Create and run a ... . (goes down to 42 different ones.) Any help is welcomed....

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

0 votes

817 views

1 answer

Edit Terraform configuration files programmatically with Python

I am trying to edit Terraform configuration files with Python. I am parsing Terraform files (.tf) using python hcl2 library ... file or is there an easier way to do it?...

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

0 votes

663 views

1 answer

Android Studio Debugger Issue

Recently Android Studio (4.1.1) has started to act strange. I cannot debug things properly because debugger stops on a ... . Attaching few images in case it helps. Hope it helps....

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

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