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I made a command line tool in C# that solves a specific problem and want to put it up on github. This is the first time I've created something that I want to share with other people, what things should I do to be a good open source citizen besides just writing up a readme.md and throwing it up there?
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Dec 20, 2018 22:58
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Decide on a license and make sure it's attached correctly to the code.
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Dec 20, 2018 23:07
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The Fool posted:I made a command line tool in C# that solves a specific problem What does it do/whats the problem
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Dec 21, 2018 03:01
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The Fool posted:I made a command line tool in C# that solves a specific problem and want to put it up on github. Make a decent readme and you’re most of the way there. It should say what your thing does, why someone would use it, how to install it, how to use it, and how to clone the repo and build it. Add a couple of usage examples, the first of which is the simplest possible useful invocation. Turn off the Issues tab if you don’t plan to respond to opened issues. (It is entirely ok to do this, and it’s better than having a half dozen five-year-old unanswered issues hanging around.) If it’d be useful to have a compiled binary for download, bump the version and make a git tag when you build one, then add the binary to the tag in the Releases page (and link to Releases in your readme). (This is where the build instructions in your readme come in handy: when you forget all this and want to ship a lil update in six months.) And yeah as mentioned pick a license and mention it in the right place.
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Dec 21, 2018 04:19
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Thanks for the advice, now to write a decent readmegoodness posted:What does it do/whats the problem Exports user audit history from Dynamics CRM online to a csv
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Dec 21, 2018 06:45
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I disagree with turning off issues -- being able to quickly see through problems other people ran into when using a tool is valuable, even if the original author doesn't plan to ever respond.
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Dec 21, 2018 11:34
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Xarn posted:I disagree with turning off issues -- being able to quickly see through problems other people ran into when using a tool is valuable, even if the original author doesn't plan to ever respond. This can be nice, I agree. I wanted to make it clear that being a "good open source citizen" doesn’t have to involve unlimited free prompt support. Personally I leave issues turned on, but I enjoy responding to people and it doesn’t feel like a chore to me. If it ever did start being a pain in my rear end, I’d turn that poo poo off without hesitation.
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Dec 21, 2018 14:02
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What is the point of the compsci course "automata"? I just finished the class with a B and I don't have the faintest idea what it was or how it would be applied to anything. I got that regex was briefly covered, and some other things that were like regex, but that's about it. At what point in one's programming career might one be like "it's time to bust out some automatas"? Thanks for the help, you guys have been invaluable for my "what is the point of x" compsci questions.
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Dec 22, 2018 08:45
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AgentCow007 posted:What is the point of the compsci course "automata"? I just finished the class with a B and I don't have the faintest idea what it was or how it would be applied to anything. I got that regex was briefly covered, and some other things that were like regex, but that's about it. At what point in one's programming career might one be like "it's time to bust out some automatas"? The idea is having a formal description of what a state machine is, so you can recognize one when you see it, and have (mental) tools to work with them and reason about them. State machines are everywhere, but if you don't know they are a thing and don't know there is formal theory for working with them, you have much greater risk of writing bad code when working on one, whether you know it is one or not. State machines are typical in e.g. network protocols, ERP systems, game logic, pretty much anything will have them at some level or other. nielsm fucked around with this message at 09:04 on Dec 22, 2018 |
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Dec 22, 2018 09:02
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AgentCow007 posted:What is the point of the compsci course "automata"? Also it's a compsci course, not a programming course, so it need not have any direct bearing on programming you do. Similarly, the Halting Problem is very significant in compsci but isn't going to affect programming in a direct way, etc. dirby fucked around with this message at 15:43 on Dec 22, 2018 |
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Dec 22, 2018 15:40
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AgentCow007 posted:What is the point of the compsci course "automata"? I just finished the class with a B and I don't have the faintest idea what it was or how it would be applied to anything. I got that regex was briefly covered, and some other things that were like regex, but that's about it. At what point in one's programming career might one be like "it's time to bust out some automatas"? Automata theory is part of the Theory of Computation, which you can divide into three categories - automata theory and languages, computability theory, and computational complexity theory. The basic theme of the Theory of Computation is "What are the fundamental capabilities and limitations of computers?" As for practical uses for automata, well aside from regex, you can use bison (https://www.gnu.org/software/bison/) to create a parser for your programming language. They're used pretty heavily in compilers and language processing and AI. There's also the state machine pattern, and UML modeling is essentially modelling a system as a state machine.
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Dec 22, 2018 15:58
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Variants of automata are useful for modeling systems that have some property. You will need to be very comfortable with automata theory if you want to do real time computing or robotics. On the less academic side, if you're designing a user interface with any degree of complexity, you're going to suffer if you don't model it as a state machine.
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Dec 22, 2018 17:06
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Hello, I have a basic idea of programming and only vague ideas of libraries, depositories, github, etc. I want to create a project in Python where a program would would track some simple camera input, like a tree rustling in the wind, and draw a sinusoidal function based on how far some specific pixels move from equilibrium. What would my first steps be? Just googling? What are some repositories of libraries that people normally turn to?
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Dec 23, 2018 16:03
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On macos using launchd when launching a python file why does "#! /usr/local/bin/python3" work but "#! /usr/bin/env python3" not? I get "env: python3: No such file or directory" when using the latter but they both work fine from the command line.
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Dec 23, 2018 16:19
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Somaen posted:Hello, I have a basic idea of programming and only vague ideas of libraries, depositories, github, etc. I want to create a project in Python where a program would would track some simple camera input, like a tree rustling in the wind, and draw a sinusoidal function based on how far some specific pixels move from equilibrium. First step would be researching computer vision libraries you can use for the image recognition. Use Google or whatever search engine for that. Pick one that looks promising and see if you can make it recognize your scene and measure the data you're interested in. If you find more than one, it might be an idea to try using several of them, see which works better for you. After making a smallest-viable proof of concept, you can start worrying about the infrastructure. When you're not experienced I think it's better to focus on the core problem first, before worrying about auxiliary things like project structure, dependency management, packaging, and so on.
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Dec 23, 2018 16:27
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Somaen posted:Hello, I have a basic idea of programming and only vague ideas of libraries, depositories, github, etc. I want to create a project in Python where a program would would track some simple camera input, like a tree rustling in the wind, and draw a sinusoidal function based on how far some specific pixels move from equilibrium. Research image processing techniques. I believe specifically that cross-correlation and Fourier transforms would be useful for what you want to do -- you may be able to cross-correlate a frame with the previous frame to get the offset you want. For Python, the numpy and scipy libraries will probably have the tools you need, but without the knowledge on how to use the tools that doesn't help you much.
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Dec 23, 2018 16:54
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Crack posted:On macos using launchd when launching a python file why does "#! /usr/local/bin/python3" work but "#! /usr/bin/env python3" not? I get "env: python3: No such file or directory" when using the latter but they both work fine from the command line. The latter searches the path for a binary called python3, and it sounds like launchd is running as a user or in a session that does not have /usr/local/bin in the PATH environment variable. The former doesn’t consult PATH at all so it works fine. And in your terminal session you have a different PATH with /usr/local/bin listed, so it works ok for you. If you really want to consult PATH in your shebang, you’ll have to find a way to add /usr/local/bin to PATH in your launchd plist (or find some way to add it before it runs your python file).
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Dec 23, 2018 17:03
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Thanks, that makes sense. I thought that plists in my home library would be run as me, but there wasn't much behind that assumption. As a somewhat related question, I made a very simple script to open a text file every fifteen minutes as a reminder: code:e: maybe this isn't the problem, I used os.geteuid() and os.getuid() and it is actually running as me. e2: figured this out in the end, AbandonProcessGroup needed to be set to True. Crack fucked around with this message at 01:14 on Dec 24, 2018 |
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Dec 23, 2018 17:22
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Somaen posted:Hello, I have a basic idea of programming and only vague ideas of libraries, depositories, github, etc. I want to create a project in Python where a program would would track some simple camera input, like a tree rustling in the wind, and draw a sinusoidal function based on how far some specific pixels move from equilibrium. Just to add on to what's been said, you might be interested in optical flow : https://en.wikipedia.org/wiki/Optical_flow
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Dec 23, 2018 19:23
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Ok, I’m not much of an algorithms guy, and I’m wondering if there’s a good way to handle this problem. I am working on a tool which will read the spreadsheets that users submit to my team when requesting new firewall rules and produce a script that can be fed into a firewall to create the rules. The spreadsheets are in a standard format, and basically list the source address, destination address, protocol and port(s). Oh and any of those can be an object group, which I haven’t even started thinking about yet. My program reads the saved firewall configurations from a TFTP server and models each firewall, so I know their connected interfaces, routing tables (thankfully, it’s all static routes), defined objects and object groups, and existing rules (which will be used for duplicate rule detection). My tool produces an object for each line in the spreadsheet which contains the source and destination firewalls, the ingress and egress interface for each, and some other info. It then collapses any rules for the same source/dest/protocol tuple into a single source object with all the ports concatenated. Here is my problem (sorry for all the  ). I want to check if the list of ports can be completely or partially replaced by an existing object group. I have the exact match working fine, so now I want to tackle partial matches. So, given a set of ports P, I want to produce a collection of zero or more candidates C1..n with the following criteria:
If it matters, the code is in C#. I do have Sedgewick’s Algorithms (Fourth Edition). Anyone have any likely starting points? TIA
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Dec 24, 2018 02:13
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dirby posted:Similarly, the Halting Problem is very significant in compsci but isn't going to affect programming in a direct way, etc. Every now and then, I have to explain it to a PM who wants to add resiliency to the product. rarbatrol fucked around with this message at 05:19 on Dec 24, 2018 |
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Dec 24, 2018 02:18
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AgentCow007 posted:What is the point of the compsci course "automata"? I just finished the class with a B and I don't have the faintest idea what it was or how it would be applied to anything. I got that regex was briefly covered, and some other things that were like regex, but that's about it. At what point in one's programming career might one be like "it's time to bust out some automatas"? Based on other posts, this sounds like a class I took, but it wasn't called "automata". That said I also did not have the faintest idea wth was going on, and also passed with a B. I find it important when debugging. It allows me to compartmentalize various sections of a program and treat them as abstract parts. That type of thing really helps me find where the failure is happening or even find where something should "split up" so that it will be easier to identify failures. It's an incredibly abstract consideration of what programmers do every day, and I couldn't say anything more without sounding like an idiot. But I've often found developers that have not been formally trained to be completely poo poo in regards to concepts that class made me appreciate. I still don't understand them, but I bet if I went on for my PHD it would probably be a very big "oh now I get it" moment for me. Maybe.
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Dec 24, 2018 06:02
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rarbatrol posted:Every now and then, I have to explain it to a PM who wants to add resiliency to the product. “Why can’t the compiler verify that this function won’t throw any exceptions that aren’t declared as being thrown? It should do that!”
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Dec 24, 2018 07:53
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dirby posted:Similarly, the Halting Problem is very significant in compsci but isn't going to affect programming in a direct way, etc. Until someone tries to get you to write a tool that, given an arbitrary PostScript file, does mail merge on it while preserving formatting including centering and justification.
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Dec 24, 2018 22:35
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Crack posted:On macos using launchd when launching a python file why does "#! /usr/local/bin/python3" work but "#! /usr/bin/env python3" not? I get "env: python3: No such file or directory" when using the latter but they both work fine from the command line. You need to pass the full path to python3, when launchd tries to run the executable you specify it does so with a very limited PATH.
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Dec 24, 2018 22:37
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LongSack posted:I’m thinking something with set theory but am clueless as to how to do it (short of brute force). You could always start with the brute force approach and go from there if you need it to be faster. For N candidates, you have 2N combinations to check, which shouldn't take too long.
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Dec 24, 2018 23:12
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I'm reviewing Arrays and got a confusion concept, 4+ dimensional arrays. Is there anyway to visualize these and what is an example of an array that would need to be 4+ dimensions?
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Dec 24, 2018 23:27
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It's like a 3d array but with one more dimension. In the same way that a 2d array is just a bunch of 1d arrays sitting next to each other in a row, a 4d array is just a bunch of 3d arrays next to each other. Same for 5d etc. In the end a 200-dimensional array is not really any more complex to work with than a 2-dimensional array.
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Dec 24, 2018 23:59
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I just think of like one element as a box, and a simple 1D array is a line of boxes. A 2D array is a square of boxes, where you've extruded each box in your original line into its own line - each element contains its own array of elements If you want another dimension - stretch each of those boxes out so you get a cube, now it's 3D. Need another? Have a line of those cubes, now it's 4D. Add another dimension and you have a grid of cubes, etc etc If you visualise this you kinda end up with structures inside structures, so it might end up being easier to think of array elements containing references to another array that's somewhere else, which might itself contain references... depends how deep you're nesting this stuff. And I've talked about squares and cubes, but they could be arbitrary lengths, so that was more for a simple visual picture But another way to think of it, is you have a drawer with a few folders in it. That's sort of an array! Maybe the drawer is divided into a few sections, each with their own set of folders. Now it's a 2D array. There's multiple drawers in a cabinet, now it's 3D - folders inside sections inside drawers. And you can keep going with this - a line of cabinets, several lines of cabinets in a room, a corridor of rooms, multiple corridors, floors of corridors, buildings... It's not that complicated, just there's a lot of stuff - but you could easily and specifically reference any element of this because of how it's organised You could arrange any data that way, although it's often more convenient to use a more readable structure instead of stringing indices together and expecting the reader to know what each layer means. But sometimes that's easier too, and arrays tend to be more performant (not sure about Python specifically)
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Dec 25, 2018 00:21
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goodness posted:I'm reviewing Arrays and got a confusion concept, 4+ dimensional arrays. Is there anyway to visualize these and what is an example of an array that would need to be 4+ dimensions? Any 3d array and the addition of time is a common example of a 4d array.
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Dec 25, 2018 01:40
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Yeah, like temperature over time in a 3D space: x, y, z, t. A common data structure in meteorology (I imagine). I use high dimensional arrays for 2D trajectories with dimensions >2 as categorical variables identifying the entity.
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Dec 25, 2018 02:07
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All of those are great examples that helped me visualize it. Thank you. The temperature over time in a 3d space was especially helpful as a real world example.
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Dec 26, 2018 08:42
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Is it possible to use programmatic means (I'm a Python person) to block Facebook pages? I decided to go through my FB ad prefs today and it's almost exclusively car dealerships and realtors. I'm not looking for a house or a new car, so I don't know why they're there. I also don't want these chuckleheads ending up back in my ads, so I'd like to block them all, but there are hundreds of them in my list. (That screenshot isn't even all of them!) Is there a way to mass-block them?
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Jan 1, 2019 19:17
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stray posted:Is it possible to use programmatic means (I'm a Python person) to block Facebook pages? I decided to go through my FB ad prefs today and it's almost exclusively car dealerships and realtors. I'm not looking for a house or a new car, so I don't know why they're there. I also don't want these chuckleheads ending up back in my ads, so I'd like to block them all, but there are hundreds of them in my list. (That screenshot isn't even all of them!) Is there a way to mass-block them? Adblock? Or https://www.raspberrypi.org/blog/pi-hole-raspberry-pi/
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Jan 1, 2019 22:00
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stray posted:Is it possible to use programmatic means (I'm a Python person) to block Facebook pages? I decided to go through my FB ad prefs today and it's almost exclusively car dealerships and realtors. I'm not looking for a house or a new car, so I don't know why they're there. I also don't want these chuckleheads ending up back in my ads, so I'd like to block them all, but there are hundreds of them in my list. (That screenshot isn't even all of them!) Is there a way to mass-block them? Ublock origin. Blocks all the ads on Facebook, YouTube, etc. I havent seen an ad on a browser in 5+ years
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Jan 1, 2019 23:05
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I just started working in a newly created data engineering team, we're (helping with) implementing data science models. I.e. converting jupyter notebooks made by a data scientist into a daily script on a server. We're looking for documentation on best practices about this. I.e. design guidelines. We work with python, hadoop, pyspark, jenkins, pybuild. Practical questions we have: - how should we organise logging? How do we make it manageable? - how should we work with configuration and parameters. I.e. should the location of input parquet files be hardcoded in the script, put in a config.ini or read via the command line arguments? - how should we build/ install python code? Topics we want to learn about include source distribution, binary distribution, wheel, egg,... - other guidelines and best practices... Anyone can recommend some good resources for these questions?
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Jan 2, 2019 12:22
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stray posted:Is it possible to use programmatic means (I'm a Python person) to block Facebook pages? I decided to go through my FB ad prefs today and it's almost exclusively car dealerships and realtors. I'm not looking for a house or a new car, so I don't know why they're there. I also don't want these chuckleheads ending up back in my ads, so I'd like to block them all, but there are hundreds of them in my list. (That screenshot isn't even all of them!) Is there a way to mass-block them? Open up whichever tab of the Ad Preferences page has stuff listed, click "See More" a few times to get a good number showing, and run this statement in your browser's developer console: JavaScript code:
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Jan 2, 2019 16:28
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What are some terms I should google to learn about coding a program to Take a video file of a tv show, connect its unformatted title like (Battlestar.Galactica.(2003).S01.E01.1080p.Bluray.AAC.5.1.x265-LION[UTR] to its series using an API call, and then change the title to a new format like <Show - Title - Year>? I'm decent at C++ now and starting python.
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Jan 6, 2019 04:45
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goodness posted:What are some terms I should google to learn about coding a program to Take a video file of a tv show, connect its unformatted title like (Battlestar.Galactica.(2003).S01.E01.1080p.Bluray.AAC.5.1.x265-LION[UTR] to its series using an API call, and then change the title to a new format like <Show - Title - Year>? HTTP requests, HTTP request parsing, OS file operations, string formatting and depending on the API maybe some JSON parsing.
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Jan 6, 2019 05:54
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Regular expressions seem like a good match for that? I'm guessing you have a bunch of inconsistent filenames, so you want a general rule for pulling out the bits of info you want, which are probably something like
You could write a regex that pulls those out, and do any processing you need on those bits (like fixing title spaces). You could use normal searching logic in your language, but regex can express a lot fairly simply. Depends how much variation you expect to see in your title formatting, and how much you want to handle instead of saying "can't do anything with this one" regex101 is good to play around and test things
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Jan 6, 2019 17:19
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