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Pause and resume background music from my flutter app

I am building an app where I need to play some music. For that I would like any background music to pause and as ... this? Currently what it does is just mix both the sounds....

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

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568 views

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windows community toolkit - Grouping data in UWP DataGrid

I am trying to display Information objects grouped by Context property with in the UWP DataGrid using the code below. ... }"/> </controls1:DataGrid.Columns> </controls1:DataGrid>...

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

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318 views

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关于接口解析

为什么接口在浏览器中库正常解析，在postman里不行接口：https://easy-mock.com/mock/5c1dfd98e8bfa547414a5278/bili/videosList...

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

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298 views

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if return问题

public class iftest { public static void main(String[] args) { String username = null; String password = "1"; usernameif( ... 的passwordif() 上面代码只会停止usernameif()而不会停止passwordif()...

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

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为什么重复值高的列（比如性别）不能作为索引？

（1）看到一个关于索引的面试题：为什么重复值高的列（比如性别）不能作为索引？我觉得是因为以这种列作为二级索引的话，那么这颗B+树会以该列的值作为节点的排序标准，如果列值相同就以主键作为排序标准如果该列重复值低，就可以根据该节点下 ... 主键值该怎么办？（3）在聚簇索引B+树的叶子节点中，每一个节点记录的是同一数据页下的全部记录数吗？还是说是部分记录？...

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

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请问为什么console出来是空？

<html> <head> <style> #show{ display:none; } </style> </head> <body> <button onclick="ha()">12</button> < ... log(document.getElementById("show").style.display) } </script> </html>...

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

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vue如何切换字体，类似于小说中的网站切换苹果字体和宋体还有黑体

vue如何切换字体，类似于小说中的网站切换苹果字体和宋体还有黑体...

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

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310 views

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python - ALSA installation failed in pip, apt and windows download

I was writing a code for something that would print messages and also say it using google text to speech. But, it said it ... was not working. Let me know what to do to solve this....

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

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1.3k views

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rabbitmq php basic_consume 怎么在没有消息接收的时候退出脚本

require_once __DIR__ . '/vendor/autoload.php'; use PhpAmqpLibConnectionAMQPStreamConnection; $connection = new AMQPStreamConnection('localhost', 5672, ' ... ，怎么会php脚本一直卡住，不会停止退出呢...

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

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c# - TeamsBot - How do I get the Team Id from a conversationupdate event?

I'm installing a Teams bot and adding it to a team. When I add it to the team, on the initial call I get the "conversationUpdate" ... : { "tenant": { "id": "{valid guid}" } } }...

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

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javascript - Copy each td cell text to your clipboard with a button

I am trying to set a button to each td text in the table that will copy the contents to your clipboard. I want to select the ... more text </td> </tr> </thead> </table> </html>...

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

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bootstrap的nav导航for 循环生成添加的点击收起事件不管用

项目是适配pc和移动端的，点击展开导航栏，选择某一分类，导航栏应该是收起当我的导航栏是写死的是时候是可以收起的，但是如果用for循环生成的话就不能这个导航分类我们是后台做的动 ... navbar-toggle"); $(".navbar-nav li a").on("click",function () { navBlock.click(); });...

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

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426 views

1 answer

Python regex find all overlapping matches?

I'm trying to find every 10 digit series of numbers within a larger series of numbers using re in Python 2.6. I'm ... I haven't been able to convert them beyond the two digits....

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

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212 views

1 answer

C++: Creating a C++ vector of a template struct

I have the following struct: template <typename A, typename B> struct Name { }; I am trying to create a vector of ... the struct in my case was initialized. Thanks for your help!...

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

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174 views

1 answer

Can't init array with uint8 type

I try to init array with the following expression: const a: array[3, uint8] = [1, 2, 3] echo repr(a) Compiler output: ... array[0..2, uint8]' Is there a conventional way to do it?...

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

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312 views

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websocket可以并发请求吗

websocket可以同时向多个服务器发送类似ajax的请求吗？我这边是前端，现在有N个服务器需要我用webSocket去并发连接取延迟最小的，取到之后连接ping最小的关闭其他连接，这个可以多线程操作吗...

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

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223 views

1 answer

Selenium JavaScript - How to set test id in Jest test cases

I want to set an id to each test in Jest so that I can uniquely identify them. It is something similar to @TestParamters ... to each of my test cases and fetch that id in TestRail....

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

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468 views

1 answer

如何阻止浏览器自动预览图片和.text文件？

后台提供的图片地址，我使用a元素设置了图片地址，但是浏览器会自动预览，而不是保存到本地，好像后台可以设置响应头，来让阻止浏览器自动预览，使其正常下载，有人弄过吗？...

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

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184 views

1 answer

c# - Adding a list of types to service builder

I am trying to take a namespace find all the classes that end with service then add them as a singleton to my service ... } This does not compile, so any help would be appreciated....

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

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131 views

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java - JML specification in the interface and the implementing class

I am a bit new to java and so while programming i have noticed that i have to give JML annotations to my subroutines. ... or this can be omitted as it is located in the interface?...

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

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428 views

1 answer

金数据问卷内的手机号码验证是如何实现的？

如题，本来想看下里面的具体实现代码，结果调试起来异常麻烦（很卡）。然后在脚本里也没找到对应的提示文本，fiddler抓包也没找到对应的内容。测试页：https://jinshuju.net/f/sQqLzJ ---- udpate 顺着已采纳答案里的正则表达式，找到了具体代码的出处，即google的libphonenumber...

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

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187 views

1 answer

amazon web services - Is there a way to specify a task placement strategy such that a new task is placed on the instance having most available memory?

I have multiple EC2 instances reserved in the ECS cluster. Currently, the tasks are placed by spread. This sometimes ... new tasks on the instance with the most available memory?...

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

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500 views

1 answer

go语言中的匿名函数执行顺序

预计执行结果： sdd hello world, sdd 实际执行结果： hello world, sdd sdd 不明白其中的缘由，不应该先执行匿名函数吗？...

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

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167 views

1 answer

Compare multiple image side by side

I know there are quite some good image comparing tools, Beyond Compare can compare two images, WinMerge can compare up ... the difference) Is there some tool capable of doing this?...

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

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291 views

1 answer

How to read csv files from a folder and delete them immediately in python

I have many csv files in one a folder - "C:DataInput_Files" I would like to load only few csv files whose name starts ... None, header=0) list_.append(df) frame = pd.concat(list_)...

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

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179 views

1 answer

python 3.x - Cant import sublime_plugin

I cant import sublime_plugin. This code worked yesterday: import sublime_plugin But when i came back today it doesn't work ... Sublime in windows7 Edit: It doesn't work anymore....

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

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286 views

1 answer

TypeError: can't concat str to bytes (but I'm not using a string) -- Python 3

I have a function that attempts to concatenate a few byte strings: data.py def hash_object (data, type_='blob', write=True ... to bytes Why does Python think this is str to bytes?...

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

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532 views

1 answer

每次使用 docker 构建前端应用镜像，如何解决 npm 依赖库每次重新 install 导致耗费时间问题？

假设现在有一个前端的项目，需要下载 npm 依赖库才能运行每次使用 docker 去构建这个前端项目镜像时都需要在镜像里面下载依赖库，才能成功运行，这样会耗费大量的时间我知道有一种做法是先在本地去 npm ... 有深入了解过 docker，希望各位大佬能指导一下，请问如何解决每次构建镜像时，npm 依赖库都需要重新 install 问题？...

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

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