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    Home Unlabelled What's the best to learn for a noob [Common Lisp, Scheme, Racket, C]? Ask Programming

    What's the best to learn for a noob [Common Lisp, Scheme, Racket, C]? Ask Programming

    March 30, 2018

    What's the best to learn for a noob [Common Lisp, Scheme, Racket, C]? Ask Programming

    What's the best to learn for a noob [Common Lisp, Scheme, Racket, C]?

    Posted: 30 Mar 2018 09:30 PM PDT

    Linking C Program with C++ Struct [Education]

    Posted: 30 Mar 2018 07:13 PM PDT

    I'm implementing a binary tree with height 10 that will be used to run a simulation. I need 2047 members of a struct available for my implementation but C only supports up to 1023 members of structs or unions (ISO/IEC 9899:201x). C++ structs can support this many instances but I'm having a lot of trouble implementing this. Is there another approach that would be better suited for my problem?

    For reference, this is the struct I'm using in C:

    struct node { int position; int state; struct node *left; struct node *right; };

    Thank you in advance!

    submitted by /u/koalitykush
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    What is the most accurate program, of at most 100 kB of code (or whatever size limit), that most accurately answers how good a programmer someone is by looking at an example of their code?

    Posted: 30 Mar 2018 09:09 PM PDT

    BTW a grammar nazi is a poor judge of shakespeare

    submitted by /u/BenRayfield
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    Visual Studio Code Impressions

    Posted: 30 Mar 2018 08:08 PM PDT

    I've recently tried out the relatively new Visual Studio Code IDE, and I can't say I'm a huge fan. I use Visual Studio and Atom for C# and Python development, respectively, and for me, Visual Studio Code does not compare.

    Of course that may just be me and my pickiness. I'd like to hear some input from anyone that has tried out the IDE, and what language you use with it.

    submitted by /u/mlgasrieldreemurr
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    Locally-Nameless interpreter in Racket

    Posted: 30 Mar 2018 07:50 PM PDT

    Im trying to implement a racket interpreter using locally-nameless bindings (rather than closures). Ive written the interpreter, but now i need to write definitions for abstracting and instantiating (+ normalizing). Any help is appreciated.

    relevant code is posted here: http://collabedit.com/agm33

    A good resource for the locally-nameless approach is the following paper: "I am not a number, I am a free variable" by Conor McBride & James McKinna.

    submitted by /u/_pseudosyntax_
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    [C#] Helping figuring out an error in my code

    Posted: 30 Mar 2018 04:37 PM PDT

    I keep getting an error that Severity Code Description Project File Line Suppression State

    Error CS0161 'Program.ComputeCost(int, int)': not all code paths return a value

    Severity Code Description Project File Line Suppression State

    Error CS7036 There is no argument given that corresponds to the required formal parameter 'length' of 'Program.ComputeCost(int, int)'

    Create a program named PaintingEstimate whose Main() method prompts a user for length and width of a room in feet. Create a method that accepts the values and then computes the cost of painting the room, assuming the room is rectangular and has four full walls and 9-foot ceilings. The price of the job is $6 per square foot. Return the price to the Main() method, and display it.

    static void Main(string[] args)

    {

    int length;

    Write("Enter the length of the room (in feet)");

    length = int.Parse(ReadLine());

    int width;

    Write("Enter the width of the room (in feet)");

    width = int.Parse(ReadLine());

    ComputeCost();

    }

    public static double ComputeCost(int length, int width)

    {

    double cost = ((length * 9 * 2) + (width * 9 * 2)) * 6;

    WriteLine($"The cost of painting your room is {cost}");

    }

    It's homework so I definitely don't need the actual answer just help figuring out where I'm screwing up.

    submitted by /u/Xytomax99
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    Is machine learning provably effective?

    Posted: 30 Mar 2018 10:25 PM PDT

    Or more generally, is there anything that can be mathematically proven about machine learning algorithms? Are there guarantees on how effective or useful they might be?

    submitted by /u/charlie_shae
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    [Java] struggling with inFile and outFiles

    Posted: 30 Mar 2018 10:13 PM PDT

    Just to clarify, I am new to programming(2nd semester into programming)

    My project is to create a program that reads an inFile, then input that into methods to print to an outFile.

    My project explained more: I'm given an inFile with first and last names and five test scores.

    Then I have to use that info in the file to make it print to another file with the first/last name of the person, all test scores, the average of the test scores, then a letter Grade.

    So far, my program can read my objects(in the driver) then print them to an outFile with the names, tests, averages, and grade.

    Im wondering how can I make it so that my program reads an inFile or an existing one, then print it to another file with more information.

    Any tips help since I've been watching tutorials, reading my textbook, and working on my project for 2 days straight and can't figure it out

    submitted by /u/Randrewson
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    Python Flask Help - returning endpoint in a separate function

    Posted: 30 Mar 2018 09:44 PM PDT

    So, If I have a standard get endpoint setup.

    class TestEndpoint(Resource): def get(self): data = run_this_function() do_some_stuff return data, 201

    Is it possible to return the endpoint inside run_this_function()? I want to do this for exceptions, if something breaks inside this function, I would rather not have to return a null value, then check for a null value on return, because I am using run_this_function() in several different endpoints. Rather than having to do a null check in many different location, I would prefer to just return a 500 error inside run_this_function() is that possible? If so, how?

    submitted by /u/PlexP4S
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    What's a good (Linux) C++ IDE that can do indexing as quickly and advanced as Eclipse, but isn't as shitty?

    Posted: 30 Mar 2018 10:57 AM PDT

    I'm working on a massive project with amazingly convoluted and shitty code. So indexing is pretty essential. Now Eclipse does it very well. Looking up filenames in the workspace, variable use occurrences, "call hierarchy" - a feature I've never seen in any other IDE. And the indexing itself is fast. Typically when importing paths/symbols config it takes about 10-20 min to index everything. Everything else is shitty tho. I don't like the handling of tabs/splits, it's laggy, I often get weird errors or just crashes, some plugins tend to break it, etc...

    So I've tried importing the same project with the same paths/symbols into other IDEs. So far I've tried Sublime, VSCode and QtCreator(my favorite that I use at home). And indexing the same project takes hours or causes a massive slowdown of the editor. So yeah, I'm looking for something that does indexing as good as Eclipse but isn't as shitty as Eclipse. Any ideas?

    submitted by /u/ptitz
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    Can a web developer call themselves a software developer?

    Posted: 30 Mar 2018 08:20 PM PDT

    As a researcher of AI and computing theory, where can I find the most advanced viruses, and search them by various properties? In the ways of lambda functions, I find replicating structures interesting and potentially useful in AI

    Posted: 30 Mar 2018 07:24 PM PDT

    I am afraid of downloading a million viruses like a fisherman is afraid of a bucket of a million worms

    I do not mean any viral action against those who do not consciously choose to download and execute whatever possible programs, but in the zoo of possibilities I feel that the sharpest toothed beasts have been snipered where many of us would be safe from closer approaching them to learn more how computing works and build more advanced safe things with some of their replicating parts

    submitted by /u/BenRayfield
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    Importing files from a GitHub project with licensing

    Posted: 30 Mar 2018 12:07 PM PDT

    Recently I've been looking into using a particular library with my project. Unfortunately the last time it was updated was over 4 years ago and it doesn't look like anybody is maintaining it anymore. The project currently can't be build and a pull request is submitted that they haven't accepted.
    What I can do is create a fork of the project, fix the bug, and import the dependency into my project. Although this is possible it creates a lot of extra hassle as I would like to focus on keeping my project all in one place.
    I feel I know the answer already but I'm not overly confident with licenses so I'd be interested to know.
    Can I import a couple of files from their project into my project if I add comments etc stating where the code is from?
    The license is GNU Lesser General Public License v3.0.

    submitted by /u/michael2109
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    Need help installing steps 1-4

    Posted: 30 Mar 2018 03:35 PM PDT

    (Link: https://github.com/zweg25/HQ). Hello, I'm trying to create this bot and follow the steps but it is too complicated and not really that detail. I don't have sufficient knowledge of these programs and I get lost easily. Those links sent did not help me enough and the creator is not making a video tutorial and is not active when contacting him. Can anyone help me with these steps given because I am just lost (such as steps 1-4) and I want to get this figure out. This only work for the Mac from what I know.

    submitted by /u/Kev9292
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    programming curves and shapes

    Posted: 30 Mar 2018 11:46 AM PDT

    Hi!

    I want to write my own custom CNC code. Currently, there exists a standard known as gCode that converts paths and shapes into instructions for motor to move across a Cartesian plane.

    Essentially, I want to learn how it's made and learn how to convert lines, arcs and curves into motor instructions. I know code exists to do this but the engineer in me is very curious how this is done and would love to make my own crappy version of a CNC.

    Any ideas on where to start?

    Note: I'm not looking for a particular language. I'm going to do it myself through Arduino, but am more concerned with the theory/methodology for it.

    submitted by /u/athanc
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    Why would one code a socket?

    Posted: 30 Mar 2018 11:10 AM PDT

    Recently I have been asked by interviewers if I know anything about sockets. I am curious as to why you would need to code a socket (ie. Client and server).

    submitted by /u/allidoisace
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    MailChimp Code Editing

    Posted: 30 Mar 2018 10:50 AM PDT

    Hi all, building a Wix-based personal site and incorporating a MailChimp mailing list sign up in my footer. I'm using the super slim embed code, looks like this. My footer is a dark charcoal grey, I want the background of the mail chimp block to match, and then flip all the font colors to a white. I've found the pieces in the code for font and size, but not color. Is there a tutorial somewhere to change that? am I SOL? Any help would be great, TIA

    submitted by /u/mpersonally
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    Simple Excel Program

    Posted: 30 Mar 2018 06:57 AM PDT

    Dear whom ever this may concern,

    I was wondering if there would be a simple way to get this done:

    In Excel I have a column with something like 001AV to 030AV

    Another column right next to this column has the item the number is pertaining to (IE: Column A1 = 001AV Column B1 = X)

    Each item could have many numbers.

    (IE: Column A1 = 001AV Column B1 = X)

    (IE: Column A2 = 002AV Column B2 = X)

    Column A3 = 003AV Column B3 = Y) ETC.

    I want to make something that sorts these together like so:

    Column A1 = X Column B2 = 001AV, 002AV

    Column A2 = Y Column B2 = 003AV, ... etc

    Can this be done easily? If this is not clear enough I will upload an excel sheet showing exactly what I want after work, although it sort of looks like this:

    What I Have

    001AV l X

    002AV l X

    003AV l Y

    004AV l Y

    005AV l Y

    006AV l Z

    … …

    What I Want

    X l 001AV, 002AV

    Y l 003AV, 004AV, 005AV, … etc

    Z l 006AV, … etc

    submitted by /u/supafreak21
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    Twitter Poll: Programmers are so unproductive because…

    Posted: 30 Mar 2018 03:49 PM PDT

    This is a follow-up to my earlier poll, "To see 10X improvement in developing software, your team needs…" in which the largest response stated better programmers were needed. I'm asking this question to see where you think the slowest members of your team (because I KNOW it isn't you!) are creating an extra burden on the team.

    submitted by /u/Huperniketes
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    Best way to store a large volume of images in web application?

    Posted: 30 Mar 2018 04:20 AM PDT

    My current stack currently consists of Angular 5 -> Node.js -> MongoDB. I plan to introduce images in my program. They likely wont be large files, but there will be many of them, and I need them to load as quickly as possible.

    Should I store them on the Front-End file system, the Back-End file system, or the MongoDB database itself?
    Any other tips for managing image-heavy applications?
    Thanks :)

    submitted by /u/CroatInAKilt
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    How to hide this element using Tampermonkey?

    Posted: 30 Mar 2018 06:18 AM PDT

    Tried the following but it's not doing anything. I want to select this element in YouTube and hide it with the help of Tampermonkey.

    // ==UserScript== // @name Minimal YouTube // @namespace http://tampermonkey.net/ // @version 0.1 // @description Make some changes to YouTube // @author You // @match https://www.youtube.com/* // @grant none // @require http://code.jquery.com/jquery-3.3.1.min.js // ==/UserScript==

    (function() { 'use strict'; $("#label:contains('Creator Studio')").hide(); })();

    submitted by /u/jupiter_104
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    Languages for Desktop Applications

    Posted: 30 Mar 2018 01:55 AM PDT

    Which languages/frameworks should i learn to make a small-scale windows 10 desktop app, cross-platform is not needed

    GUI is important

    submitted by /u/Jornillo
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    how to bind input data to innerhtml of h4 through mvc pattern in vanilla js?

    Posted: 30 Mar 2018 03:18 AM PDT

    hey, I am having a problem with this:

    the code: https://pastebin.com/kBVByX2J

    as you can see I am trying to make mvc with vanilla js with data binding, fro now with just printing out on the oninput event, but it doesn't work, it says controller is not defined, why is that?

    I am using this: https://github.com/w3cj/front-end-face-off-vanilla-js as my base fro the routing and i am trying to add a new route with content, how can I make the binding work with mvc patter?

    submitted by /u/benonymus
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    Gathering and persisting application logs

    Posted: 30 Mar 2018 03:16 AM PDT

    Hi, I've got a small/medium sized web app (Spring Boot/Java) and I noticed that browsing logs through CLI have become insufficient because there are too many parallel requests. Right now I'm using Sentry.io (free plan) which gathers all warn & error logs, but sometimes I need to look at 'info' logs too. My first through was integrate my app with AWS cloudwatch logs or setup Logstash instance. Can you share with me your ideas and solutions?

    submitted by /u/kubelke
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    Java library for 3d object visualisation

    Posted: 30 Mar 2018 02:03 AM PDT

    Hi,

    I want to build an application that can render 3d molecular visualisations to achieve results similar to this:

    Molecular visualisation c# unity video

    Are there any libraries in Java that can I can use to achieve similar results?

    Or is there a more suitable programming language to do this in? maybe something like swift and use Apple's SceneKit library?

    Thanks for your help!

    submitted by /u/J-a-y-c
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