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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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699 views

1 answer

Web端如何调用百度地图app?

最近做一个导航的功能，想从web端携带目的地的经纬度等参数跳到百度app， location.href="http://api.map.baidu.com/marker?location="+latitude+","+longitude+"&title=我的位置 ... 这样写的话跳到的是百度地图web端，怎么样才可以跳到百度地图APP，求解，谢谢 ...

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

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648 views

1 answer

c++ - How can I initialize an array of its length equal to the return of a const int method?

What I'm trying to accomplish is this: inline const int size() { return 256; } int main() { int arr[size()]; ... global variables, Macros, std::vector or creating arr[ ] on heap?...

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

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1.0k views

1 answer

groovy - Jenkins Build to made unstable on particular stage with specific error

Actually we are trying to make jenkins Build as Unstable on some particular stage if that stage fails with specific word , Let ... can be done via jenkins file using try ,catch ??...

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

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842 views

1 answer

js如何（不经过弹出预览窗口的）「直接打印」

通过print函数会产生预览窗口...

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

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695 views

1 answer

reactjs - how to install react-native-video on windows app?

for a certain windows app I am trying to install the react-native-video package on the solution project. I found ... source code "ReactNativeVideoCPP.h" what could be the problem?...

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

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754 views

1 answer

Why the transaction is always pending in my ethereum private chain

env：ethereum private chain Geth Version: 1.9.25-stable Git Commit: e7872729012a4871397307b12cc3f4772ffcbec6 Architecture: amd64 ... is When will the transactions be mined?...

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

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1.0k views

1 answer

echarts如何添加多个handle（拖拽手柄）？

echarts可以在横纵坐标轴上添加可拖拽的手柄，并且实时显示坐标值，但是目前官方的事例只能添加一条竖线，而目前的需求是可以添加多条。谢谢！...

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

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1.2k views

1 answer

linux - futurebuilder has no instance in in flutter

body: FutureBuilder( future: taskList, builder: (context, snapshot) { if (!snapshot.hasData) { return Center( child: ... (length:2) of '_GrowableList' Tried calling: call(0)...

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

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1.1k views

1 answer

dart - How could I add handler to InputCodeField from code_field package in flutter?

I use code_field to get verification from user in my android app. How could I get that code, for instance, onComplete or another function? pubspec. ... ) ), ), ], ), ), ), ); } }...

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

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2.1k views

1 answer

微信打开h5页面，video视频无法自动播放和获取第一帧为封面

移动端有一个新闻页面需要通过 h5 页面实现，该页面中会包含视频，但是视频上传是没有封面的，所以想用视频的第一帧作为视频封面，但是发现基本实现不了，主要是在微信里面打开h5页面，video有如下问题： 1 autopaly 无法自动播放 ... ); 也没办法播放； 3 就是没有视频封面，想找通用的封面也没找到；大家是怎么处理找个问题的呢？谢谢！！！...

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

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2.1k views

1 answer

android studio build 出apk 安装到手机上打开出现 Using app server 弹框如何关闭？

每次打开都会出现这个弹窗如何关闭呢?...

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

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2.3k views

1 answer

How do I pass an array into an Excel VBA function

I am trying to clean up some of my VBA code by removing redundancies and making more reusable functions. One place I ... . If anyone has any ideas I would really appreciate it!...

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

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2.1k views

1 answer

Looking for large latex file (~200 pages/1mb+) to test compression implementations

as the title suggests I'm looking for latex-specific files that are around 200 pages and 1mb+ in size. I've tried ... , or does anyone have one I could use? Thanks in advance...

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

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2.8k views

1 answer

python - How to combine successive rows with an increasing overlap between them (just like a rolling window)?

I am currently starting to learn Pandas and struggling to do a task with it. What I am trying to ... Initial dataframe After adding multiple rolling windows as my question needed...

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

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3.1k views

1 answer

Microsoft Azure API Management - Cache policy doesn't work

I have tried to set a caching policy in Azure API Management as follows: <policies> <inbound> <base /> <cache- ... ? Is some other configuration needed or have i enable something?...

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

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2.7k views

1 answer

Nginx, Express Routing issues

I have an application running behind nginx reverse proxy, the is application is running fine. The application is ... all files on sites-available already linked to sites-enabled...

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

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3.4k views

1 answer

Echarts Tree

echarts tree 节点距离怎么调整...

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

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3.0k views

1 answer

PHP读取TXT内容怎么按行分页？

1 用PHP读取TXT内容，然后按10行分页，该怎么实现呢？ 2 如果TXT文本每一行里的内容是按TAB分隔或者空格分隔开的，该怎么进行拆分呢？ <?php $str= file_get_contents(" ... http://MRGMDVLF.MW 20 | 唐磊 | 17 | [email protected] | http://ZWAV.ID...

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

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3.5k views

1 answer

numpy - Question related to Iris source- python. -Clustering

I just installed python and Im really a new beginner to it. My first task was to build a chart on ... .com/MeghanaKankanala/TSF/blob/main/Iris_clustering.ipynb Thank you very much...

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

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3.7k views

1 answer

滚动条突然跳到顶部去

本来实现碰到底部，加载更多的功能，加载更多后，数据出来了，但是滚动条会突然到顶部去，怎么解决呢？加载更多是通过 IntersectionObserver 这个api实现的。有谁遇到过类似的问题吗？...

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

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3.5k views

1 answer

求助这段js代码怎么理解? 初学者看不懂

geth: function(a) { var b = 0; return a || (a = 0), get("header_title") && (b += 50), get("footerdiv") && (b += 55), $(window) ... ))b += 55,//这样理解对不对 $(window).height() - b + a },...

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

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4.0k views

1 answer

python - For data with a `set[int]` value, what fast means exist for grouping based on having at least one common member?

Currently, I am tackling such a problem by parsing through each set, picking each member, adding or skipping said member ... categories and then to do all the setting at the end....

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

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4.4k views

1 answer

Change performance metrics for TensorFlow 2 Object Detection API

Where do i find the config file? The default metrics are based on those used in Pascal VOC evaluation. To ... -object-detection-api-tutorial.readthedocs.io/en/latest/install.html...

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

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3.5k views

1 answer

为什么echarts x轴最后一个参数是加粗的呢？？怎样去掉加粗呢？

如图：...

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

0 votes

3.3k views

1 answer

网页跳转如何保留上个页面的参数，以便返回时保持相同的状态？

页面A是有本身需要用到的queryString传过来的两个参数叫firstSubject和secondSubject，这两个参数页面B不需要用到页面A还有筛选按钮，点击筛选按钮跳转到筛选页面B，因为有三个不同的筛选类型（等级，地区，专业）， ... 目前的做法是都通过queryString传，但是觉得逻辑很乱，代码可读性很差大神们有什么好的方案推荐吗...

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

0 votes

2.7k views

1 answer

在同一个结构体里的不同map共用一个锁，并发时会影响性能吗

在同一个结构体里的不同map共用一个锁，并发时会影响性能吗...

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

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2.6k views

1 answer

Found a .md5sum file in the root of my FTP hosting account - what is it for?

Logged into my hosting account - GoDaddy - via the typical FTP method. Noticed this ".md5sum" file in the root ... something that that calculates and verifies 128-bit MD5 hashes)...

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

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