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Welcome to Our Knowledge Sharing Community-Open, Learning,Share

Welcome to developer's Knowledge Sharing Community-Open, Learning,Share 欢迎来到程序员专属的知识分享社区! 一个分享知识，传递知识，学习知识的社区！...

asked Feb 5, 2021 in Others[杂七杂八] by ostack (1.4k points)

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node.js - What is Express.js?

I am a learner in Node.js. What's Express.js? What's the purpose of it with Node.js? Why do we actually need Express.js? How is it useful for us ... Node.js? What's Redis? Does it come with Express.js? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - What is Linux’s native GUI API?

Both Windows (Win32 API) and OS X (Cocoa) have their own APIs to handle windows, events and other OS stuff. I have never really got a clear answer as ... GTK+ being cross platform. How can it be native? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Node.js and CPU intensive requests

I've started tinkering with Node.js HTTP server and really like to write server side Javascript but something is keeping me from starting to use Node. ... making sure CPU heavy tasks are executed async? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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259 views

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git - Push existing project into Github

I have a folder with my project sources. How I can push this project into Github's repository? I tried using this steps: I created empty ... can push existing sources into newly created github repo? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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168 views

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Rails server says port already used, how to kill that process?

I'm on a mac, doing: rails server I get: 2010-12-17 12:35:15] INFO WEBrick 1.3.1 [2010-12-17 12:35:15] INFO ruby 1.8.7 (2010-08-16) [i686 ... can start one on a new port, but I want to kill this process. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How can a time function exist in functional programming?

I've to admit that I don't know much about functional programming. I read about it from here and there, and so came to know that in functional ... can one know the current time in functional programming? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How do I run git log to see changes only for a specific branch?

I have a local branch tracking the remote/master branch. After running git-pull and git-log, the log will show all commits in the remote tracking branch ... "] remote = origin merge = refs/heads/master See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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zsh completion - zsh compinit: insecure directories

What does it mean and how can I fix it? zsh compinit: insecure directories, run compaudit for list. Ignore insecure directories and continue [y] ... directories: /usr/local/share/zsh/site-functions See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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354 views

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amazon web services - scp (secure copy) to ec2 instance without password

I have an EC2 instance running (FreeBSD 9 AMI ami-8cce3fe5), and I can ssh into it using my amazon-created key file without password prompt, no problem ... why this is happening/how it can be prevented? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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138 views

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JSON, REST, SOAP, WSDL, and SOA: How do they all link together

Currently doing some exams and I'm struggling through some concepts. These have all been 'mentioned' in my notes really but I didn't really understand how ... what all of these are and how they interlink. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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What exactly is OAuth (Open Authorization)?

What exactly is OAuth (Open Authorization)? I have gleaned some information from OAuth Twitter Tutorial: What is OAuth And What It Means To You What is OAuth ... the various technologies (e.g. ASP.NET)? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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bash - How can I convert tabs to spaces in every file of a directory?

How can I convert tabs to spaces in every file of a directory (possibly recursively)? Also, is there a way of setting the number of spaces per tab? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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415 views

1 answer

django - Token Authentication for RESTful API: should the token be periodically changed?

I'm building a RESTful API with Django and django-rest-framework. As authentication mechanism we have chosen "Token Authentication" and I have already ... solution? (the last question has lower priority) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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472 views

1 answer

go - How to print struct variables in console?

How can I print (in the console) the Id, Title, Name, etc. of this struct in Golang? type Project struct { Id int64 `json:"project_id"` Title string ... `json:"data"` Commits Commits `json:"commits"` } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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269 views

1 answer

Ruby on Rails Callback, what is difference between :before_save and :before_create?

Could you explain in detail what the :before_save and :before_create Ruby on Rails callbacks are, and what they have to do with Rails ... validation occur after :before_save or :before_create? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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389 views

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git - Export a stash to another computer

I need a way to export a stashed change to another computer. On computer 1 I did $ git stash save feature I'm trying to get the stash patch to a ... the question is how to import it as a stash again. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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284 views

1 answer

date - How do I use PHP to get the current year?

I want to put a copyright notice in the footer of a web site, but I think it's incredibly tacky for the year to be outdated. How would I make the year update automatically with PHP?4 or PHP?5? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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112 views

1 answer

Command-line Parameters in C program?

How do I read command-line parameters in C? For example, in ./test --help or ./test --build how do I access "--build" or "--help"? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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143 views

1 answer

javascript - Google Maps API 3 - zoom not honored

I am trying to develop an HTML page that displays a KML file via Google Maps API. link to the page: http://www.slocleanair.org/air/AQI_III/mapTest.html My ... /js"></script> <div id="map_canvas"></div> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

392 views

1 answer

excel - Changing YYYYMMDD to MM/DD/YYYY

So I have a date that is 20170529 but whenever I try to format it to a date, the cell just becomes #########. So normally, that means the column ... just shows ##### How do I convert these to dates. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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125 views

1 answer

java - ArrayList not updating inside onChildAdded function

public class DataService { private static DataService ourInstance = new DataService(); private DatabaseReference mDatabase; public static DataService getInstance() { ... going on? Thanks in advance! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

359 views

1 answer

c++ - Why "cout" works weird for "unsigned char"?

I have the following code: cvtColor (image, image, CV_BGRA2RGB); Vec3b bottomRGB; bottomRGB=image.at<Vec3b>(821,1232); When I display bottomRGB[0], it ... greater than 255. What is the reason for this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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170 views

1 answer

angularjs - Linking one controller to another to call service on ng-click

I have two templates with respective controllers and service files. One template's(fleetListTemplate) controller(fleetListController) loads data from its service file(fleetService) ... -12-2015' } ]; }); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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115 views

1 answer

c++ - Compiling an application for use in highly radioactive environments

We are compiling an embedded C++ application that is deployed in a shielded device in an environment bombarded with ionizing radiation. We are using GCC ... of soft errors on a long-running application? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

360 views

1 answer

How can I draw a radar chart and bar graph in the subplot in Python?

I have a problem about putting a radar chart and bar graph in the subplot in Python. I defined 1 row and 2 columns to put each one into each slot. ... /image10.png', bbox_inches = "tight") plt.show() See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

209 views

1 answer

c# - How can I create custom XML namespace attributes when consuming a legacy SOAP service?

I have a legacy Tibco SOAP service that I need to get some data from. Unfortunately this service is very particular about the XML namespace attributes ... document and manually sending it to the service? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

72 views

1 answer

Restructuring a bad database with PHP loops or MySQL

I have a special case with a PHP project where I am working with a database without a 3rd normal form structure. The database consists of only ... /end foreach }//end while mysqli_close($connection_var); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

186 views

1 answer

javascript - Shorthand for Object.create() with multiple properties

If I want to create an object in JavaScript that has a prototype link to another object, but has several of it's own properties how can I do this? ... / my new object with object1 as it's prototype link See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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