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When I ssh into my ubuntu-box running Hardy 8.04, the environment variables in my .bashrc are not set. If I do ... .bashrc isn't run at login? See Question&Answers more detail:os...

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git - fatal: The current branch master has no upstream branch

I'm trying to push one of my projects to github, and I keep getting this error: peeplesoft@jane3:~/846156 ... : Authentication failed Any hints? See Question&Answers more detail:os...

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

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oop - Aspect Oriented Programming vs. Object-Oriented Programming

Like most developers here and in the entire world, I have been developing software systems using object-oriented ... somebody have the answer? See Question&Answers more detail:os...

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

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algorithm - What is a loop invariant?

I'm reading "Introduction to Algorithm" by CLRS. In chapter 2, the authors mention "loop invariants". What is a loop invariant? See Question&Answers more detail:os...

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

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user agent - What is the purpose of the implicit grant authorization type in OAuth 2?

I don't know if I just have some kind of blind spot or what, but I've read the OAuth 2 spec ... by skipping the client authentication step? 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 to use sudo inside a docker container?

Normally, docker containers are run using the user root. I'd like to use a different user, which is no ... in Unable to locate package sudo See Question&Answers more detail:os...

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

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node.js - NodeJS / Express: what is "app.use"?

In the docs for the NodeJS express module, the example code has app.use(...). What is the use function and where is it defined? See Question&Answers more detail:os...

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Header files for x86 SIMD intrinsics

Which header files provide the intrinsics for the different x86 SIMD instruction set extensions (MMX, SSE, AVX, ...)? ... me if I'm wrong. See Question&Answers more detail:os...

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

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bluetooth lowenergy - Triangulate example for iBeacons

I am looking into the possibility to use multiple iBeacons to do a 'rough' indoor position location. The application ... way to write it myself? See Question&Answers more detail:os...

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How to use the 'og' (Open Graph) meta tag for Facebook share

Facebook fetches all pictures from my site. I want to share only one picture which is on that page. I heard about the ... 't know how to put it. 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 to set the font size in Emacs?

I also want to save the font size in my .emacs file. 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 to split a string in shell and get the last field

Suppose I have the string 1:2:3:4:5 and I want to get its last field (5 in this case). How do I do ... how to specify the last field with -f. See Question&Answers more detail:os...

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How do you rename a MongoDB database?

There's a typo in my MongoDB database name and I'm looking to rename the database. I can copy and delete ... a command to rename a database? See Question&Answers more detail:os...

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

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restapi - REST API Authentication

I'm building an application which will be hosted on a server. I want to build an API for the application to ... the user is already logged in? See Question&Answers more detail:os...

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

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java - JPA or JDBC, how are they different?

I am learning Java EE and I downloaded the eclipse with glassfish for the same. I saw some examples and also read ... " I couldn't follow :( See Question&Answers more detail:os...

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

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GatlingSystem-akka.actor.default-dispatcher-2 error - crashed with 'j.l.NullPointerException' when running Karate Gatling test

When I try to run a Gatling performance test with Karate, I get the following in the error log. Simulation ... Can someone kindly help please? See Question&Answers more detail:os...

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

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assembly - Turn float into string

I have proceeded to state when I need to turn IEEE-754 single and double precision numbers into ... (betweenResult, decimalExponent); See Question&Answers more detail:os...

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Segregating Lists in Prolog

I am having a really hard time understanding how to get my code to show my segregated lists consisting of even and odd ... '), write(O), nl. See Question&Answers more detail:os...

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

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php - How to solve Error 404 when deploying laravel project to Cpanel?

I'm trying to deploy my laravel (Laravel Framework 7.28.3) to Cpanel, but got a 404 error. I uploaded my ... my file structure in File Manager: See Question&Answers more detail:os...

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java - Moving JLabel to other JLabels - GUI

I'm trying to make a JLabel move across other JLabels, only 1 timer works right now. It is supposed to operate like a ... tf.setLocation(x2, y2); tf.getLocation(); } }); startTime...

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

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c - srand function is returning same values

Hey guys take a look at this program. /* The craps game, KN king page 218 */ #include <stdio.h> #include <time ... and run it to see what i mean 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# - Scale GameObject over time

I made a test game in unity that makes it so when I click on a button, it spawns a cylinder created from a ... Destroy(cylinder, 30.0f); } } See Question&Answers more detail:os...

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

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Is there a way to not use square brackets in SQL Server?

In Microsoft SQL Server, I had a table called [Key], but I hated having to address it as [Key] each time ... person table or the address table. See Question&Answers more detail:os...

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

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Ant, download fileset from remote machine

As I've readen ant doesn't provide 'fileset' attribute when downloading files from remote machine via scp ... corresponding folder using ant? See Question&Answers more detail:os...

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

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regex - Why do ^ and $ not work as expected?

This puzzled me the last 15 minutes: if ('ab' =~ /^a|b$/) { print 't' } else { print 'f' } print ... two characters 'ab'. But it succeeds. Why? 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 does C++ Preprocessors work?

I am currently looking at open source C++ projects to learn more about C++. One of the project I am look ... explain to me how this work? See Question&Answers more detail:os...

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

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java - Why does this code using random strings print "hello world"?

The following print statement would print "hello world". Could anyone explain this? System.out.println(randomString(- ... sb.toString(); } See Question&Answers more detail:os...

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

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php - Traits vs. interfaces

I've been trying to study up on PHP lately, and I find myself getting hung up on traits. I understand the ... so similar as to be identical. See Question&Answers more detail:os...

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

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