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    What’s your programming passion project? learn programming

    June 24, 2018

    What’s your programming passion project? learn programming

    What’s your programming passion project?

    Posted: 23 Jun 2018 08:10 AM PDT

    What're you working on (or want to work on) that's not for school or work? Something you're excited about programming and creating that's not necessarily for a paycheck or a grade!

    submitted by /u/super_code
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    Need Help With Algorithms And Data Structure

    Posted: 23 Jun 2018 07:51 PM PDT

    I started solving problems in April. I have solved 70 problems on LeetCode, easy-63, medium-6, and hard-1. On HackerRank I have solved around 78 problems(95% easy). I am participating in every LeetCode contest as well. I am taking Algorithms and Data Structure course (link), currently I am on the 3rd week section of Data Structure course.

    The problem is that even after I am done with so many problems I am still unable to solve many easy questions, solving medium level questions is a distant dream. Today's LeetCode contest broke me hard, I wasn't able to solve even one question.

    I am completely lost at the moment, confidence is down, I can't just suck at Algorithms and Data Structure.

    Any help will be appreciated, thank you!

    submitted by /u/Kaori4Kousei
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    Talking to Active Directory, which language is better? Go or Python?

    Posted: 23 Jun 2018 08:54 PM PDT

    Hi there.

    I'm thinking about automating some tasks when running queries against Windows Active Directory and I'm aware that Powershell might be the best option. However, I'm planning to run code from a Linux machines so I thought about having Go or Python doing that. I've been doing some research online and both languages have 3rd party packages/libraries that can do that. Initially I will be checking user info and groups but it can grow to submitting more complex commands such as deleting users or removing them from groups.

    Any ideas on which language would be appropriate? Performance, etc.

    Thank you for your help.

    submitted by /u/mariolasagna
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    My friend is teaching me about encryption and just sent me this and asked me to decode it. I think it's base 64 but idk what to do from there. Help please.

    Posted: 23 Jun 2018 11:26 PM PDT

    NTMgNzQgNzIgNjkgNmUgNjcgMjUgMzIgNjUgNjYgNzIgNmYgNmQgNDM gNjggNjEgNzIgNDMgNmYgNjQgNjUgMjUgMzIgMzggMzcgMzYgMjUgMzIg NjMgMjUgMzIgMzAgMzUgMzYgMjUgMzIgNjMgMjUgMzIgMzAgMzQgMz UgMjUgMzIgNjMgMjUgMzIgMzAgMzEgMzEgMzEgMjUgMzIgNjMgMjUg MzIgMzAgMzkgMzggMjUgMzIgNjMgMjUgMzIgMzAgMzEgMzEgMzUgMj UgMzIgNjMgMjUgMzIgMzAgMzkgMzkgMjUgMzIgNjMgMjUgMzIgMzAgM zEgMzEgMzcgMjUgMzIgNjMgMjUgMzIgMzAgMzEgMzEgMzQgMjUgMzIg NjMgMjUgMzIgMzAgMzkgMzcgMjUgMzIgNjMgMjUgMzIgMzAgMzEgMzE gMzYgMjUgMzIgNjMgMjUgMzIgMzAgMzEgMzAgMzUgMjUgMzIgNjMgM jUgMzIgMzAgMzEgMzEgMzEgMjUgMzIgNjMgMjUgMzIgMzAgMzEgMzEg MzAgMjUgMzIgNjMgMjUgMzIgMzAgMzQgMzUgMjUgMzIgNjMgMjUgMz IgMzAgMzQgMzkgMjUgMzIgNjMgMjUgMzIgMzAgMzQgMzggMjUgMzIg NjMgMjUgMzIgMzAgMzQgMzkgMjUgMzIgMzk=

    submitted by /u/Klingonadvocate
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    Are assertions anything more than a print inside an if?

    Posted: 23 Jun 2018 07:33 AM PDT

    Hi.

    I've been reading about assertions and, while I (think I) understand what they are used for and how they work, I cannot see how they are any better than putting a print statement inside an if.

    To be more explicit: I am pretty sure these are equivalent:

    assert(condition, "Warning") if condition: print "Warning"

    so I don't understand why some languages implement the former. I understand some assertions are logged to an error log, but I still don't see why couldn't this be done inside an if.

    submitted by /u/quietandproud
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    When writing to a text file using <fstream>, how do attach a code to it>

    Posted: 23 Jun 2018 09:30 PM PDT

    I have multiple inputs (cin >>), how do I get those inputs on a text file using fstream? I'm sorry for the badly worded question, I'm new to C++

    submitted by /u/wotinbutthole
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    ELI5: What's the first "Button" in Button button = new Button(); mean and do?

    Posted: 23 Jun 2018 08:21 PM PDT

    I've been making phrases like that for a while but I still don't understand what the the first "Button means and does. I know button is the reference variable and the new Button() lets the variable access it's methods and fields but what's the point of the first one? Why was Java made to include the the first "Button"?

    submitted by /u/icon99
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    [Android] How do I make properly make changes to my published app?

    Posted: 24 Jun 2018 12:04 AM PDT

    I'm about to publish my first app to the Play Store and the app is written in Java. At some point, I'd like to make changes to the app, whether changing source code of classes, adding classes, or adding new drawable images. However I don't want to have the user re-download unchanged parts of the app. Is there any way I can have the user just download the changed/added parts of the app instead?

    submitted by /u/Angoram
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    Undefined reference to SDL functions

    Posted: 23 Jun 2018 11:44 PM PDT

    I'm following a tutorial involving C++ and SDL2, and I keep getting:

    /tmp/graphics-3b2b03.o: In function `Graphics::Graphics()': graphics.cpp:(.text+0x39): undefined reference to `SDL_CreateWindowAndRenderer' graphics.cpp:(.text+0x52): undefined reference to `SDL_SetWindowTitle' /tmp/graphics-3b2b03.o: In function `Graphics::~Graphics()': graphics.cpp:(.text+0x74): undefined reference to `SDL_DestroyWindow'

    Here's the class:

    #include "SDL2/SDL.h" #include "graphics.h" Graphics::Graphics() { SDL_CreateWindowAndRenderer(640, 480, 0, &this->_window, &this->_renderer); SDL_SetWindowTitle(this->_window, "title"); } Graphics::~Graphics() { SDL_DestroyWindow(this->_window); }

    Here's the compile command:

    clang++ *.cpp -I /usr/include/SDL2/SDL.h -I "/path/to/repo/"/headers

    I'm using VSCode on Linux.

    submitted by /u/AnComsWantItBack
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    Allow "ObjectCreated" event notification from my zappa app

    Posted: 23 Jun 2018 11:35 PM PDT

    I'm creating a zappa app so I can perform a lambda function when an object is created in my S3 bucket. At the moment, when trying to update my zappa app via zappa update dev I get this error:

    botocore.exceptions.ClientError: An error occurred (AccessDenied) when calling the GetBucketNotification operation: Access Denied

    I've configured my AWS credentials on my Mac system so I assume the error is from my Bucket policy not allowing this event notification.

    Here's my bucket policy:

    { "Version": "2012-10-17", "Statement": [ { "Sid": "Allow All", "Effect": "Allow", "Principal": "*", "Action": [ "s3:GetObject", "s3:PutObject" ], "Resource": "arn:aws:s3:::****-bucket/*" }, { "Sid": "Deny All Actions On All But Media and Static Unless Defined User", "Effect": "Deny", "NotPrincipal": { "AWS": "arn:aws:iam::***********:root" }, "Action": "s3:*", "NotResource": [ "arn:aws:s3:::****-bucket/media/*", "arn:aws:s3:::****-bucket/static/*", "arn:aws:s3:::****-bucket/media_thumbnail/*" ] } ] }

    Any my CORS config:

    <?xml version="1.0" encoding="UTF-8"?> <CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/"> <CORSRule> <AllowedOrigin>*</AllowedOrigin> <AllowedMethod>GET</AllowedMethod> <AllowedMethod>POST</AllowedMethod> <AllowedMethod>PUT</AllowedMethod> <AllowedHeader>*</AllowedHeader> </CORSRule> </CORSConfiguration>

    Here is my zappa_settings.json:

    { "dev": { "aws_region": "us-east-2", "django_settings": "zappatest.settings", "profile_name": "default", "project_name": "zappatest", "runtime": "python3.6", "s3_bucket": "zappa-*******", "vpc_config" : { "SubnetIds": [ "subnet-******", "subnet-*******", "subnet-*******" ], "SecurityGroupIds": [ "sg-******" ] }, "events": [{ "function": "zappatest.lambda_function", "event_source": { "arn": "arn:aws:s3:::*****-bucket/media/", "events": [ "s3:ObjectCreated:*" ] } }] } }

    Is the error because of my bucket policy security or something else?

    submitted by /u/ItsComingHomeLads
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    Web Designer as a career from scratch?

    Posted: 23 Jun 2018 03:33 AM PDT

    Hey guys,quick question and i would appreciate an honest answer: Im a 20 year old Croatian that doesnt go to college,currently works shit paying physical jobs,now i am sick of all that and i aim to better my life. I know my way around a computer pretty,been using them daily for the past 10 years,i know photoshop aswell.

    Do you guys think its possible for me to become a web designer just from teaching myself,via online courses etc,and how long would it take to get a good grasp of knoweldge in Javascript,html,and CSS (i know the basic gist of codes and programming but thats it,starting from zero pretty much)

    Also is web designig a good/well payed career or is there too many web designers as is?

    Now if i start im going to dedicate myself fully to this,so please give me an honest and realistic answer,and thank you for reading my wall of text !

    If you think im aiming a bit too high or something like that,i would appreciate any advice you have for me! Thanks guys

    submitted by /u/Throwaway_Kappalul
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    How can I make the Udemy video player smaller because right now it takes up the entire browser screen even when NOT in fullscreen mode?

    Posted: 23 Jun 2018 05:34 PM PDT

    So the Udemy videos I am trying to study from come in two sizes as far as I can tell atm: Full screen or not full screen.

    The issue is the "not full screen" option still takes up the entire browser screen, which for me is literally 34 inches on an ultrawide monitor. Meaning multitasking with it is next to impossible.

    How do I get this down to like youtube sized? Because this is absolutely gross to try and learn with.

    submitted by /u/confusedGuy17
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    Too much learning, not enough applying?

    Posted: 23 Jun 2018 11:28 PM PDT

    I've recently been learning a bunch of new languages through sources like udemy, freecodecamp, youtube etc for a couple of months.

    The problem is I'm having a hard time getting started on my own projects applying the things i learn. The problem isn't that i can't think of anything i want to build, as i have a ton of cool ideas, some simple while others more ambiguous. Rather the fear of 'not knowing enough' and 'needing to learn more before starting' keeps holding me back.

    For example i want to build a portfolio website for myself, but i haven't finished an online course i'm taking and so i never get started, despite being more than able to at least work on the front end components.

    Is there a way i can get rid of this kind of mindset? Is there an actual line of how much you should learn before starting something you want to build, or is it all in my head? Thanks in advance!

    submitted by /u/thebromoe
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    What is your favorite way to learn?

    Posted: 23 Jun 2018 11:02 PM PDT

    Tell us about your learning methods and WHY you do it that way! Be specific!

    submitted by /u/danthedoozy
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    How will I set MinGW-w64 compiler as my default compiler for CodeBlock?

    Posted: 23 Jun 2018 09:59 PM PDT

    Can someone please tell me step by step to set MinGW-w64 compiler as default compiler in Codeblock 13.12?

    submitted by /u/anshumansingh005
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    I want to learn how to program

    Posted: 23 Jun 2018 09:51 PM PDT

    i want to further my career and have decided to pursue programming and coding. I've wanted to learn python but can't seem to find any tutorials or guides out there, any of you have any recommendations on places to learn?

    submitted by /u/Ananaki_Ononoki
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    Best site to learn C++?

    Posted: 23 Jun 2018 09:02 PM PDT

    I want to take the long but correct way, please help me. :)

    submitted by /u/frandarvas
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    (X-POST from r/learnjava) Can't understand how to get my multiclient server working correctly. Client message is received and handled by a thread, but not sent/received by other clients

    Posted: 23 Jun 2018 05:04 PM PDT

    What exactly is the problem you're seeing?

    I'm trying to learn the basics of socket programming in Java. I'm doing this by creating a program that has a server and can handle multiple clients through multithreading. The main goal is to create a program that can allow multiple users to join the "chat room" and send messages to one another, sending and receiving simultaneously. The client sends a message, a new thread object handles this client and receives messages and sends messages back to the "chat room".

    What is the expected output or behavior of your program?

    As stated above, the expected behavior of the program is for a client to send a message, the client handler to receive that message, and then for that message to be sent back to each other client.

    What output or behavior do you get instead?

    Instead of the expected output above, I am having an issue where the client is sending the message to it's output stream, the client handler thread is receiving this message through the input stream of it's socket, yet when it's supposed to send it back, it doesn't

    What have you already tried to debug your own problem? Where do you suspect the problem is? What uncertainties do you have?

    I have already tried to debug this problem by adding print statements to the sendMessage thread and receiveMessage thread of the Client class, and the ClientHandler thread class, as seen below

    //Client.java Thread sendMessage = new Thread(new Runnable() { @Override public void run() { while (true) { try { String messageToSend = userIn.readLine(); System.out.println("MESSAGE TO SEND: " + messageToSend); //test dataOut.println(messageToSend); System.out.println("Message Sent"); //test } catch (IOException e) { System.out.println(e); } } }}); Thread receiveMessage = new Thread(new Runnable() { @Override public void run() { while (true) { try { String messageReceived; System.out.println("INSIDE RECEIVE LOOP"); //make sure we even make it here messageReceived = dataIn.readLine(); System.out.println("MESSAGE RECEIVED" + messageReceived); //check if msg rec. } catch (IOException e) { System.out.println(e); } } }});

    //ClientHandler.java

    public void run() { while (true) { try { String userInput; while ((userInput = userIn.readLine()) != null) { System.out.println("USER INPUT: " + userInput); //test that input is received if (userInput.equals("Quit")) clientSocket.close(); for (int i = 0; i < clients.size(); i ++) { ClientHandler handler = (ClientHandler)clients.get(i); handler.getWriter().println(userName + ": " + userInput); //msg sent to all } } } catch (IOException e) { System.out.println(e); } } }

    So the Client.java is compiled and run in one shell, and Server.java is compiled/run in another shell(calling ClientHandler.java). Once I connect with Client.java, a message is sent to the ClientHandler end of the connection (server's accepted socket). The USER INPUT line is printed and the message is recieved. And the program enters the for loop, as I had another print statement there to check. But the handler.getWriter().println doesn't seem to be sending, or the receiveMessage thread doesn't seem to be receiving the message, as it prints nothing after "INSIDE RECEIVE LOOP"

    I'm really just unsure how to debug further, because it seems the issue is between the ClientHandler's output stream and the Client input stream, and I'm not sure how to go about confirming this.

    EDIT 1: To follow posting guidelines

    EDIT 2: If more code is necessary to help, I can upload it somewhere for full view of all of my files

    EDIT 3: https://gist.github.com/jallard93/7fb907ff7b8ea4136ee5cfb8dabe2a1c

    Gist added above with all code

    submitted by /u/JuanTheBeast51
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    All important algorithms and Data Structures at one place

    Posted: 23 Jun 2018 01:17 PM PDT

    Easy tutorial: physics engine in JavaScript

    Posted: 23 Jun 2018 09:22 AM PDT

    http://slicker.me/javascript/matter.htm - even if you're completely new to JavaScript

    submitted by /u/monica_b1998
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    is c++ for dummies 7th edition still viable to learn from or is this book outdated and I need to find something else?

    Posted: 23 Jun 2018 04:22 AM PDT

    I heard that programming languages get updates or something like that and some old books are not viable to learn from due to new stuff or changes being implemented into the language.so I was wondering if this book is still acceptable.

    submitted by /u/trumpler123
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    Odoo / openerp future

    Posted: 23 Jun 2018 08:14 PM PDT

    I am working as a odoo developer, I want to know what is the future of openerp/odoo.

    submitted by /u/iqrarehman76
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    I dont understand how 'static' works with database querys

    Posted: 23 Jun 2018 08:01 PM PDT

    I think I have a misunderstanding of the meaning of 'static'.

    Php laravel, doing txn details to a double entry accounting system. I dont expect static to be a security risk, but I dont take chances.

    I'm creating a public static function. This function uses laravel, stupid ex:

    return static::where('user_id', 1 )->value('user_id');

    This returns dumb data, but I would like to understand what exactly static means in this situation. Arent all querys async?

    submitted by /u/FoodieAdvice
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    Still confused about what class parameter names mean in python

    Posted: 23 Jun 2018 07:46 PM PDT

    I'm learning flask and the tutorial I'm using is tells me to add a new argument to an object, specifically UserMixinin class User(UserMixin, db.Models) but from way back when I started learning python (way back being a few weeks ago) I still wasn't sure what the object in something like class Coordinate(object) meant. Are these other classes they inherit, and in python is it okay for a class to inherit two different classes at the same time?

    submitted by /u/KingShindo
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