Recent questions in Technique[技术]

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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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sqlite - Error with parameters in Python with SQLite3 TypeError: unsupported operand type(s) for +: 'sqlite3.Cursor' and 'str'

I am a beginner in coding and this new community.I need your help to understand why it is not possible to get ... Main(window) window.mainloop() Thanks in advance and kind regards....

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

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javascript - Get data from each array of array with sequence output

i am trying to get sequence index of each array of array like I have an element of the array and that 5 arrays have multiple ... ,7,6] give me some sort of solution to fix my issue...

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

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amazon elasticache - How to store nested results in REDIS Cache

I have a frontend UI application that allows a user to input two parameters: Name Time The range of values for ... like to switch to REDIS. My concern is mostly implementation....

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

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ios项目新建类不能关联找不到<UIKit/UIKit.h>

上周上边up完代码，突然创建所有新的类都没有代码提醒了，代码也不变色了，小伙伴的同样是这样，上周交完代码发生冲突，然后在搞的时候由于一些原因，小伙伴的代码弄乱了，然后新checkout了一份，然后把新建的类加进去之后又提交了， ... 哪里的问题，求大神帮忙解决一下！！！谢谢啦，是不是新建的类不能关联了？还是什么情况，好像是新建类后他不会Indexing 了...

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

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ansible - Check folders permission with loop

My current playbook is working but it is not checking the folders group permissions recursively. It only checks ... - set_fact: stig_text: "PASSED" when: file_perms_rule.changed...

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

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Typecho 开发如何获取评论者的邮箱？

想通过取邮箱域名获取头像例如如果是qq.com(QQ邮箱)就可以用接口获取QQ头像等但是找了很多文档都找不到获取邮箱的方法，请指教。...

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

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sql语句如何按照时段分组

碰到这样一个需求，需要查出订单表中每个时段的销量，请问sql中如何根据时段去分组？数据库为mysql...

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

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windows 7 - Developing Apps with Administrator Rights in Delphi

I'm using D2010 under Windows 7 to write an app that seems to require admin rights (I think because it uses COM to ... I run my app, rather than having the whole IDE run elevated?...

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

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Flutter: do not open ExpansionTile

Before open this widget I need to validate other parameters for the user. So if the user clicks to soon I'll ... the status would be open anyway. Can I validate somehow this?...

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

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Getting latest date with count of customers in R

I have the following data: Date_X <- c('2020-01-01','2020-01-02','2020-01-03','2020-04-01','2020-05-01' ... has 100+ showrooms and 1000+ items] The output desired is like this:...

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

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http - I Cannot Find a Simple Proxy Server that Supports my OCSP/CRL requirements

My requirements are as follows: Take in an HTTP request and generate an HTTPS request to an upstream server Check ... go about implementing my own proxy server to support this?...

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

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python wordcloud ImportError: The _imagingft C module is not

词云代码 #-*- coding:utf-8 -*- from scipy.misc import imread import matplotlib.pyplot as plt from wordcloud import ... ") ImportError: The _imagingft C module is not installed 崩溃...

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

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用PHP如何实现分数排名,有什么好的思路?

对学生成绩做一个排名,分数为一个数组,排好名次后输出排名结果: 比如 $scores = array(90,100,100); 自定义函数实现返回数组 $rank(3,1,1);...

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

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raspberry pi - Simple python script using 100% CPU on rPi3B+

I have raspberry pi model 3b+ with a HC-SR04 ultrasonic distance sensor (there is also a couple of ds18b20 and a DHT21 but ... where is about 5C to 10C. Thank you for your help....

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

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MYSQL query in a finite loop with sqlalchemy lost connection

I`m building a finance web app with flask, sqlalchemy and MYSQL. I try to query a collection of trading data in ... .me/e/13/e3q8) Any direction would be greatly appreciated!...

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

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c - Compilation terminated while compiling in visual studio code

#include <stdio.h> int main() { int a = 10, b = 15, c; c = a + b; printf("%d", c); ... directory gcc.exe: fatal error: no input files compilation terminated. Error code image...

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

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How do I delete executable JAR after running it inside Java program?

I am using a Java program to download JARs from a private online database, and then run them using the following ... found anything on how to do this inside another Java Program....

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

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Python Image masking and removing Background

I have two images: the temple and the mask (the heart). I want to mask the temple with the shape of the ... shaped cutout from the temple with a white or transparent background....

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

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python 3.x - Export a tensorflow model for inference

All, I have written a script to export a pre-trained TensorFlow model for inference. The inference code is for the ... anyone please take a look and help me understand the problem....

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

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c# - Invert larger numbers to (close to) zero and zeros to larger numbers

I would like to transform the number beings used to create this slope/sine in the sample below to "inverse" numbers that I ... Math logic I can use to achieve my goal. Thank you....

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

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r - specific fill order in geom_area

Happy new year! Consider this simple example: > df <- tibble(type = c('0_10','0_9','0_8','0_10','0_9','0_8','1_10', ... )), position = 'stack', color = 'black') Any idea? Thanks!...

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

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vue axios post请求失败

账号和密码都正确，但是后台老是返还错误...

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

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not able to launch the app on android studio is it showing java.lang.NullPointerException:

app is not launching. i have seen the the splash screen tutorial from youtube <androidx.constraintlayout.widget. ... of them is any coding error but launching problem...

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

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How Can I Add labels or tooltips to PDF text with Python?

I have a PDF. I would like to parse the "Definitions" section, extract the definitions, then parse the document adding a ... create / add labels or tool tips to PDF text please?...

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

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551 views

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function - SFML/C++ cells won't move

I am currently trying to make a cellular automata. I am just getting the basics of direction, movement and rendering. ... just refuse to move. Any help would be appreciated :)...

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

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387 views

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weex-vue-render 如何查看更新日志

众所周知weexH5版的bug现在还很多，大家都希望能尽快看到官方对weex-vue-render的升级。目前npm上weex-vue-render的版本已经是0.10.3，但是在github上找不到相关的更新记录，希望官方能提供一下每次迭代的更新日志，方便我们开发者查看新版都解决了什么bug...

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

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django - Wagtail profile avatar into ImageRenditionField serializer

I want to serialize the profile avatar from Wagtail admin with ImageRenditionField. Basing on the answer from the ... ' How do I throw user avatar into ImageRenditionField?...

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

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