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    Freelancers who found their first job via the internet, how did you do it? learn programming

    November 26, 2017

    Freelancers who found their first job via the internet, how did you do it? learn programming

    Freelancers who found their first job via the internet, how did you do it?

    Posted: 25 Nov 2017 05:30 AM PST

    I am learning webdev. I went to a few local businesses, offering them to do their websites for free, but none of them are interested in having a website (well, one of them said he would think about it if I provided the hosting cost too,but at the moment, it's beyond my financial capabilities.) I understand having a few real projects on the portfolio is needed to break into the industry without CS degree. So I am looking to find some work on the internet. But so far, I haven't been that successful. So how did you find your first job?

    submitted by /u/sioa
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    Learning Blockchain

    Posted: 25 Nov 2017 07:09 PM PST

    Hi reddit,

    I have no background in programming at all, but I've always wondered about programming. I never learned how to program because I never had a specific goal in mind. By profession I'm an accountant, and there's been a lot of noise about blockchain technology and how it's going to put the financial world upside down.

    Like many laggards, my interest in bitcoin and the underlying blockchain technology has only peaked this year.

    Every accounting news source says that blockchain is the next big thing in accounting/finance, and because of that I don't want to be left behind by not learning more about it. Finally, I feel like I have a solid vision to focus my efforts towards in regards to programming. I want to learn how to use blockchain technology, and to even possibly learn how to program one. I want to be able to provide my future clients with up to date financial/accountting solutions, which will probably include blockchain. Where should I start? What types of programming theories and functions should I learn? This seems like a broad question, but I hope to get some advice that'll narrow my search for answers. All replies are appreciated. -Lost

    submitted by /u/LostE8
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    What got you into programming in the first place?

    Posted: 25 Nov 2017 04:17 PM PST

    I've always been interested by programming and always wanted to learn. I also knew that if I just posted "Where should I start if I want to learn programming?" it would probably be swept under the rug with the 100s of other people who have no idea what they're talking about. Instead, I wanted to make it more interesting by asking what inspired you, and how did you start?

    submitted by /u/scrichard
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    How can I continue to learn and code with Cassandra?

    Posted: 25 Nov 2017 08:35 PM PST

    Hi, I need some help with cassandra. I joined a research group as a undergrad assistant. No one in the group really knows much about Cassandra, including me, so they tasked me to dig a bit deeper. We currently use mongoDB.

    Specifically, they want me to get a general idea of cassandra (pro/con, why we should or shouldn't use it based on what we currently have) and also play around with basic functions (figuring out installation, data input/output, how it works with python, etc.)

    Before coming to this lab, I didn't know much about database and systems. However, I thought I would be able to find some tutorial/books and get a grasp.

    1) So my first question is, can anyone recommend a beginner friendly (emphasis on beginner) course/book/tutorial that I can learn from that literally starts from step 0?

    This is really important to me because my first task was to simply install Cassandra and it was way more frustrating than I thought it would be. I couldn't find a comprehensive tutorial and had to piece together different bits of info from various webpages or videos.

    So now, I've finally able to start a cassandra server through cmd (cassandra -f), use python CQL shell, and downloaded the cassandra driver for python. It was frustrating trying to figure this all out without a solid guide so that's why I'm asking for recommendations of good source to pick up from from this point on.

    2) what does it actually mean to install cassandra? In other words, I'm not sure I'm doing everything correctly. I just started reading tutorials and troubleshooting until I stopped seeing so many error messages. So now that I got the cqlsh, a server, and python drivers running, what else do I need to do? Kind of lost there

    3) To be specific, when I mean python driver, I mean the datastax python driver that I installed using pip. So what exactly is the python driver and the CQL shell? Are these means to communicate data to casssandra? and if so, then what is cassandra? Is it a database, language, etc?

    4)I've read that the data in cassandra spans many machines and devices. But how do I make it more permanent and widespread than just my laptop right now? How can I save the data so it lasts? Right now, everytime I want to use CQLsh, I have to boot up cassandra through the command line and then when I close the command line, how can I make it so that my data is there when I come back another time? Like saving your essay in a word doc.

    submitted by /u/BLlMBLAMTHEALlEN
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    What is the purpose of learning Assembly?

    Posted: 25 Nov 2017 08:24 PM PST

    I am required to take a class that uses MIPS Assembly. While so many people have told me it is important to understand assembly to help me understand java and other common languages (and I believe it), I still fail to understand why. What are the benefits to knowing assembly?

    submitted by /u/cupojoe4me
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    Curation of useful JS links for beginners and experts

    Posted: 25 Nov 2017 05:55 PM PST

    need conceptional help in writing an algorithm to find an open time slot

    Posted: 25 Nov 2017 07:05 PM PST

    i have an SQL database which holds information about students, including the classes they are taking. an example of a students courses might be " class one: 8am - 10am MWF class two: TTH 1pm- 1:55pm".

    along with this students are assigned to groups. so group one might hold three students, who are all taking different classes at different times. my goal is to write a function which will take in the days and times of each class taken by each student in the group, and then will return any open time slots where no classes are taken. i would want to define an open time slot as anytime where no member of the group has a class, the slot is at least one hour long, and the slot takes place in between 8am and 6pm.

    i have no idea how to approach this as of right now. my only thought is that i should convert the times to a 24 hour format, but that's about as far as i can get. any help would be great!

    submitted by /u/Vis_Ganks
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    [Python] Using a dictionary to store functions

    Posted: 25 Nov 2017 08:39 PM PST

    Can someone provide insight as to why my test code doesn't work a certain way, and how I should get around this?

    I'm using a dict to store functions. Basically, the complete program will read user inputs and call certain functions depending on the input.

    Simplified code:

    mip = [] def one(): mip.append(5) def two(): mip.append(10) funcs = {'one':one(), "two":two()} ins = ["one", "two", "one", "two"] for token in ins: if token in funcs: funcs[token] print(mip)

    Output: [5, 10]

    Why is the output not [5, 10, 5, 10]? Is there a better way of approaching this?

    Thanks in advance.

    submitted by /u/Hatewrecked
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    [C - linux] Strange segmentation fault

    Posted: 25 Nov 2017 11:11 PM PST

    I keep getting a segmentation fault with this code:

    #include <stdio.h> #include <string.h> #include <stdlib.h> int main(int argc, char* argv[]) { char *out_file_token = "-o", *com_list_token = "-c", *tick_sym_token = "-t", *directory_token = "-d"; char *company_list, *output_file, *directory, **files_list, **ticker_list, **temp_list; //allocate memory for temp_array temp_list = malloc(argc * sizeof *temp_list); for (int i = 0; i < argc; i++) { temp_list[i] = malloc(256 * sizeof *temp_list[i]); } int file_count = 0; for (int i = 1; i < argc; i++) { printf("%s\n",argv[i]); if (!output_file && !strcmp(argv[i], out_file_token)) { output_file = argv[i+1]; i+=1; continue; } if (!company_list && !strcmp(argv[i], com_list_token)) { company_list = argv[i+1]; i+=1; continue; } } printf("%s %s\n", output_file, company_list); for (int i = 0; i < argc; i++) free(temp_list[i]); free(temp_list); return EXIT_SUCCESS; }

    This is the input I have used to test it:

    ./test.x blah -c company_list blah -o output_file blah

    I expect to see this:

    blah -c company_list blah -o output_file blah company_list output_file

    but this is what I get:

    blah -c company_list blah -o output_file segmentation fault (core dumped)

    The fault always comes right before the last string is printed. If I add 10 "blah"s to the end of the input the segmentation fault will come right before the 10th one is printed.

    The strange part is if I comment out the memory allocation of temp_list (and the free statements) the program runs fine and as expected. I just don't know what could be happening. How does the memory allocation effect the loop?

    I've tried googling this, but there are so many pages about segmentation faults and loops that are irrelevant I haven't found anything that helps.

    I have a feeling is something so simple that I just haven't noticed. Any help would be appreciated!

    submitted by /u/normalbad
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    "Build websites from scratch" through CodeAcademy -- thoughts?

    Posted: 25 Nov 2017 03:58 PM PST

    Anybody know about "Build websites from scratch" that's run by CodeAcademy for $199? Are there any alternatives that are better that I should know about?

    Should I do bootcamp?

    submitted by /u/ClopinTrouillefo
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    Short version, I'd like feedback on decentralized protocol I was thinking about

    Posted: 25 Nov 2017 04:15 PM PST

    Long version might be a little too long.

    In short I was thinking about a protocol where users can exchange encrypted data. Instead of sites harvesting your personal data a guy can run his own pi and host 1000friends and other people can host people they know and the servers talk to eachother in a decentralized way like how email works in a decentralized way. Instead of facebook or instagram or whoever executing logic when an event happens, a user would have apps that handle the logic and the data is shared via a protocol all the apps and server understand.

    I gave some examples in the longer post. What I figure is the protocol needs to support a public and private database (sqlite) or key-value store. This is so an app can receive a link or qr code as input of big data (like an image or public key) and look it up via it's sha256 value that it has. To prevent spamming a server would only accept data from another server if it has a valid key or shared secret and may impose limitations like only 20 messages per day from that server to an account id (a user may have hundreds of id's). There may be a public blacklist of servers that don't behave well. There will also be a method for new connections that servers will promise to limit one request per user to a specific user. The protocol is privacy minded so your server will only know who the data is for and not who the data is coming from.

    As a quick example, an instagram clone can find a friend (via other friends or a uri) and use a method to send a friend request. The app will send the appropriate data so the friend app can understand and validate the friend request. If it succeeds the friend will send a certificate so your client can access certain private data from your server. When I post an image my app will put it on my server (encrypted, my as in the server im using), get my friend list (offline or via server), send a notification to each friend (using a cert or shared secret so the remote server knows we have permission) then we're done. When our friend opens the app or after the app refreshes the app will receive the notification, access your server with a shared secret or cert then pull your image. To leave a comment it'd be the same way however it gets a little fuzzy because if I make a comment and my friend removes me as a friend (which means there'd be a revoke list in the protocol) the data would be on a remote server. The remote server won't know how to remove my comments/data. The app would but have no permissions to access/remove the data. App developers would have to play nice and remove comments or users will need to know comments wont be removed

    Anyways I was wondering what I'm missing and what the protocol requires. I was thinking maybe publisher-subscriber may be useful but after thinking about it, it seemed like a bad idea since the server has no client app knowledge. However I am thinking maybe server owners would want to run their own chat servers or websites so support for direct http or tcp would be a good idea

    submitted by /u/IProgramSometimes123
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    How were the GUI portions of the Microsoft Apps (Excel, Outlook, Access, etc.) developed?

    Posted: 25 Nov 2017 03:52 PM PST

    I have read that C++ is used in some form or fashion, but I have not been able to get any info on how the GUI was the developed. Any info is appreciated!

    submitted by /u/dannoss
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    Python: Use of Subclasses in text RPG

    Posted: 25 Nov 2017 04:25 PM PST

    So a friend & I just began programming a text based RPG and we're trying to layout as much of the design as possible before programming it.

    We've been discussing the Item & Character class and how we're going to break them down. For the Items we've broken down the types of items to Armor, Weapons, Consumables, and Quest (A, W, C, Q). They will all will have a name and description. A & W are equipable and C & Q are useable. A room (loot) or character (inventory & equipment) may have any item that exists in the game.

    Now finally my first question, what are the pros & cons of having a subclass for each type VS having a useable/equipable boolean method for each item?

    In regards to Characters we plan on having 3 types NPC, PC, & Enemies. The differences are how much detail they'll have, whose controlling them, and their specific action. The player will have control of two characters at any given time with assigned stats. Enemies will have base stats with modifications based on what type of enemy. Similar to the Items should I have 1 or 2 classes (characters and enemies) or assign a character a type from a list?

    Thanks for all opinions!

    submitted by /u/dragource
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    [Express/Angular] How to create Angular2 app inside pre-existing Express app?

    Posted: 25 Nov 2017 05:31 PM PST

    Using angular-cli? I have an Express app already and would like to use the angular-cli to create the front end within the same project, but after creating a 'client' folder and doing ng new app-name I receive

    You cannot use the new command inside an Angular CLI project.

    How can I create the angular app without having to manually add the files I need?

    submitted by /u/Vqn1204
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    Not being the quickest programmer

    Posted: 25 Nov 2017 08:56 PM PST

    Hello,

    I am currently studying computer science and having recently started group projectsI find myself not being as quick to program as my other teammates with similar experience. I do find this a bit discouraging since i sometimes feel like I am holding the team back. Is there anything I can do to become a quicker problem solver?

    submitted by /u/redtreebark
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    Good idea to learn basics of HTML & CSS if I don't want to go into front-end dev?

    Posted: 25 Nov 2017 02:58 PM PST

    Hi I'm pretty new to programming and CS (just completed the fantastic CS50x course on edx), and now I'm deciding where to go next.

    Lots of times on the web I see HTML and CSS being mentioned as at least a starting point for moving on, but I'm wondering if its a good use of time to spend a month or two on those languages when a) I'm much more interested in back-end dev than front-end b) I don't see a long-term future for those languages being coded because I see tools like Bootstrap Studio obsoleting them.

    Thoughts greatly appreciated :)

    Thanks

    Jez

    submitted by /u/jezb73
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    Linux - Introduction

    Posted: 25 Nov 2017 11:49 PM PST

    Here I have got something about what is actually a Linux and about its history. i hope you will enjoy it. And please add if I missed anything. http://linuxlecture.com/linux-history/

    submitted by /u/ravi_solanki
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    How do you sort items in a listbox alphabetically by a specific string in C#?

    Posted: 25 Nov 2017 11:11 PM PST

    So I have to do this program where there are 3 items in a listbox: student id, first name, last name. When a button is clicked, the listbox contents become sorted alphabetically by the first character of the last name. I've found the Sort() method online but i have no idea if this is even right to use in this context or how to even use it, any help would be appreciated

    submitted by /u/Adr3y
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    Starting a project

    Posted: 25 Nov 2017 03:40 PM PST

    Im an intermediate level programmer, College computer science major. I have no problems solving assignments given to me but i struggle with coming up with cool or even unique project ideas that i could work on to build my resume or at the very least fill my github. does anyone have any suggestions or any idea how i could get better about coming up with project ideas? my tool belt includes Java, C#, Python, SQL, PHP, JavaScript, CSS and HTML

    submitted by /u/_Us3r_Nam3_
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    Introducing my new Free Video Course - Learning Concurrency in Python

    Posted: 25 Nov 2017 02:57 PM PST

    Hi All,

    I'd like to present to you my new video course: Learning Concurrency in Python.

    I thought I'd announce this now as I've just hit the 10 videos mark and I want to hopefully drum up a bit of support and keep the momentum going!

    Link : https://www.youtube.com/playlist?list=PLzUGFf4GhXBLEQsoOfLzhH6JKybt8I5Ec

    Let me know what you think! I will be adding new videos weekly so please subscribe to my channel for more Python based tutorials!

    Kind Regards, Elliot

    submitted by /u/Forbsey1
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    How important is discrete math in programming?

    Posted: 25 Nov 2017 02:37 PM PST

    I am currently in my discrete math 1 class and I am going through a chapter this is on proofs, which are obviously very important and interesting. This chapter only goes through specific proofs for certain situations, like divisors, prime numbers, even/odd numbers, etc. What I am wondering is how useful will this knowledge be? There are certain things in this book that seem obviously useful to know for programming, like and/ or, graph and set theory, trees, but currently my homework is a bunch of problems about solving mods without a calculator. So basically what is most important in discrete/ what should I try to take away from this class. This is the book so you can see this table of contents. Thanks! http://home.aubg.edu/students/ANA160/ebooksclub.org__Discrete_Mathematics_with_Applications.pdf

    submitted by /u/LarryKingsScoliosis
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    Is it common for an application to have a low level language for the heavy lifting and a high level language for flexibility/GUI design?

    Posted: 25 Nov 2017 04:04 PM PST

    An example could be that you want something like C to handle the core functionality, but do not want to use C for GUI design and ad-hoc scripting. Any responses appreciated!

    submitted by /u/dannoss
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    Approaching recursive problem

    Posted: 25 Nov 2017 09:57 PM PST

    I've been practicing some questions on leetcode and came across one titled Generate Parentheses.

    After bashing my head on the problem for a few hours, I read through some of the other submissions and after reading them and going through them by hand, it makes sense as to why they work.

    My question is how do I frame/approach these problems to help me come to a good recursive solution?

    class Solution { public: vector<string> generateParenthesis(int n) { vector<string> ret; helper(ret, "", n, n); return ret; } void helper(vector<string> & res, string str, int left, int right) { if(left == 0 && right == 0){ res.push_back(str); return; } if(left > 0) helper(res, str + "(", left - 1, right); if(right > left) helper(res, str + ")", left, right - 1); } };
    submitted by /u/jokem59
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    JavaScript canvas game only works in certain window sizes?

    Posted: 25 Nov 2017 03:58 PM PST

    JS: https://paste.ofcode.org/YSuCDNSsnvfh7VgikxzeTZ So this game that I made has a box collider, however it seems that for some reason it wont detect a collision in certain (most) window sizes. Any ideas why? live demo

    submitted by /u/firefoxuser3
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    Best udemy courses for Python/Django?

    Posted: 25 Nov 2017 03:56 PM PST

    I have access to Udemy for Business (basically access to any Udemy course for free) for the next 6 weeks. How can I best take advantage of this to learn Python/Django - I've already finished automate the boring stuff.

    submitted by /u/o4hassan
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