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561 views

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当我用Graphics的GetHdc时，结束的时候无论我用ReleaseHdc()，还是ReleaseHdc(hDC),还是ReleaseHdcInternal(hDc),内存都不能释放代码如下： Graphics g = Graphics. ... .ReleaseHdc(destDC); g.Dispose(); 麻烦问一下谁知道这是为什么呢？...

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

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524 views

1 answer

el-table树形数据表格相同行的合并

怎么合并树形数据表格的行啊，常规的动态数据行合并好像不适用，展开收缩的时候数据显示就错乱了。...

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

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599 views

1 answer

bitcoin - How would I get a DER encoded non-deterministic canonical ecdsa signature with node.js?

I have tried the following: var hash=sha256(sha256(msg)); // hash of the transaction var priv_key= ".. ... make the first version canonical or the second version non deterministic....

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

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572 views

1 answer

When trying to export this array as a CSV file in php I get an empty sheet

I have this array, and I want to convert it into a CSV file, the problem, is that the array does not ... when opened with open with OpenCalc or excel shows something like this:...

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

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673 views

1 answer

python - popen is not executing the command line parameters

I am trying to execute the following command via popen but not sure why it is not working and not error message thrown ... . Any idea why popen does not function in this case?...

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

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640 views

1 answer

怎么用代码把dwg转换成dxf格式

如题。要怎么做才行。用AutoCAD可以转换，网上也有一些工具可以转换。但是要自己用代码实现要怎么做？ dwg文件打开是16进制混着字符串，要怎么进行转换？谢谢各位了...

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

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855 views

1 answer

uniapp 运行微信小程序字体图标错误。

正常运行H5页面是这样的运行微信小程序是这样的报错信息请问下这种情况怎么处理？...

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

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820 views

1 answer

ios - WKWebView full screen with hidesBarsOnSwipe of navigation bar

I want to make a custom browser working with ARKit in background. I set UINavigationController as rootViewController and ... . And home indicator does not occupy any area....

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

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1.0k views

1 answer

微信小程序页面栈10层限制如何突破？

在提出这个问题之前，已经在各社区搜索引擎看了很多关于如何突破限制的文章既然如此，我为什么还要提出这个问题？因为那些解决方案还是难以解决我所需要的需求如下: 要求该小程序以正常流程走动非设置个人信息等 ... 将堆积的页面栈移除，不过发现目前能够一次性移除多个页面栈的只有 wx.navigateBack， delete 没有测试过，应该是不可行的 ...

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

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962 views

1 answer

javascript - search in JSON with AJAX

I have to search inside a json file with a value from my input, everything is fine capturing the value and the event, but ... , both the if and else are executed at the same time....

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

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821 views

1 answer

请问下python test.py -h -s -f像这种方式是如何传参的呢

1.请问下python test.py -h 127.0.0.1 -port 3306像这种方式是如何编写脚本实现这种方式传参的呢，而不是python test.py 127.0.0.1 3306 2.我想写一个test.py --help的帮助文档是怎么写的呢，主要是对-h 和 -port这两个参数做解释### 问题描述...

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

0 votes

1.1k views

1 answer

vue-cli3设置proxy代理访问外部接口失效

我的 devServer: { proxy: { '/proxy': { target: 'https://dic.pixiv.net/api/', // 外部接口地址 changeOrigin: true, // 是否允许跨域 pathRewrite: { / ... 径根本没有生效，请问要如何解决？是因为axios设置的默认前缀覆盖了proxy配置吗？...

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

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1.1k views

1 answer

PHP 类属性动态声明时初始化和不初始化的区别是什么？

第一种写法 class test{ public $a; protected $b; private $c; public function __construct($a, $b,$c) { $this->a = $a; $this->b = $b; $this-> ... 写法有什么区别吗还是没有区别，能想到的就是第二种a，b，c三个属性都是为public...

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

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1.5k views

1 answer

el-time-picker默认时间23:00-06:00后时间选择错误

使用<el-time-picker is-range>组件，期望是显示的时间选择是23:00 - 06:00，但是最后出来的效果是在第一个时间选择框那里才能选择6点之前的选择，而且选择了之后就变成了05:00 - 23:00，我想问一下有办法解决吗？...

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

0 votes

1.4k views

1 answer

Embed object (archive, CSV...) into docx with Python script

I (and my team) currently plan to automatically generate Word documents from text sources. However, we often need to embed ... (typically not PDF). Thanks a lot for your help....

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

0 votes

1.7k views

1 answer

django - Wagtail - How to save a record which uses InlinePanel containing M2M

I have a model which uses an InlinePanel to reference another model (ClubTimetable) which itself contains an M2M relationship ... , it looks like this (Initial) (Adding timetable)...

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

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1.5k views

1 answer

python - I have syntax error on my code and I don't know what the problem is?

Q: "Ask the user how many numbers they want to enter. Let them enter this many numbers and write them to a text file. Each ... 1) + " ") file.writelines(user+" ") file.close()...

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

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2.0k views

1 answer

python - How can one extract date features from a date in pandasql?

I need to extract date features (Day, Week, Month, Year) from a date column of a pandas data frame, using pandasql. I ... , Humidity FROM df ''') df2.head() Data Frame Example:...

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

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1.7k views

1 answer

达梦数据库以逗号分割的列如何按逗号拆分实现列转行

C1,C2,C3,C4 就像这样以逗号分割的列，如何按逗号进行拆分，转为和原行ID对应的多行。...

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

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1.6k views

1 answer

authentication - Authenticate API in .net core using ping identity OAuth2.0

Problem Statement : I want to secure APIs using ping identity OAuth 2.0. I am following this blog ... Route("[controller]")] public class WeatherForecastController : ControllerBase...

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

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2.1k views

1 answer

webpack打包生成LICENSE.txt文件?

webpack打包后生成了 LICENSE.txt 文件，哪个大佬知道这个文件从哪来的以及如何设置才能不生成这个文件。...

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

0 votes

1.8k views

1 answer

xaml - Adjust the text size in a ListView according to a parameter

My Xamarin.Forms app displays the name of multiple items in a Listview. The name of the article is displayed by a Binding ... explain it to me in more detail. Thank you very much....

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

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2.0k views

1 answer

Xcode debug view hierarchy卡在capturing user interface

xcode 12.2 macOS 10.15.7 xcode debug view hierarchy卡在capturing user interface 期望1：想知道怎么解决这个问题。因为已经影响改bug了。期望2：想知道为什么？...

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

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1.9k views

1 answer

Canvas动画制作，那个大佬能指导一下，实现下面这种效果？

...

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

0 votes

1.9k views

1 answer

python 3.x - LabVIEW: How to implement bilateral filter over a image

I have an image of 360x360 matrix I want to Implement a bilateral filter over this IMG I tried to implement ... filtered_image_own) I tried to implement this in Labview but failed...

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

0 votes

2.0k views

1 answer

node.js - Add string before URL in NodeJS

I need to add the string json-csv.com/?u= before a URL such as http://api.open-notify.org/iss-now.json with NodeJS. ... ://api.open-notify.org/iss-now.json'); console.log(fullUrl);...

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

0 votes

1.8k views

1 answer

python - <Response 500> POST REQUEST

I want to pass through a button a parameter which is its input value and save it in the data base. More ... python. Any help would be appreciated. Thank you in advance....

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

0 votes

1.5k views

1 answer

哪位ASP.NET达人能帮我生成个密码吗？

哪位大神帮忙生成个密码，万分感谢 `using Microsoft.AspNetCore.Cryptography.KeyDerivation; using System; namespace SyWeb.Admin.Utils { public static ... , (KeyDerivationPrf) 0, 10000, 32)); } } }`...

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

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