Is this bool expression simplification true? Ask Programming |
- Is this bool expression simplification true?
- WHERE clause go through three columns in order
- Biggest noob here, I want to make a mailto and add an img to it on a website.
- File issues when trying to run in ROS
- How do i know if I'm programming the right way?
- Most comfortable chair for long coding sessions?
- Is doing a project the key to improving programming?
- Programmers, what you suggest for productivity via tools
- Algorithm Project
- I want to be able to play mp4 videos without a library
| Is this bool expression simplification true? Posted: 07 Dec 2021 01:48 AM PST |
| WHERE clause go through three columns in order Posted: 07 Dec 2021 04:00 AM PST Hello, currently I have this sql that returns the first match for name variable: SELECT * from Tablename WHERE name = :name LIMIT 1 But now I need to make it go through 3 columns. if its not found in the "name" column, then search in "fullname" column. If its not found even there then search in "id" column. First thing I can think of is using the "OR" operator, but that would probably not work because: I want only the first result. And if the match is in row 100 for "name" but row 1 for "fullname", i still want the 100th row one. Does anyone know how to do this? [link] [comments] |
| Biggest noob here, I want to make a mailto and add an img to it on a website. Posted: 07 Dec 2021 06:13 AM PST
this is what I have, but when I click it nothing happens [link] [comments] |
| File issues when trying to run in ROS Posted: 07 Dec 2021 05:33 AM PST Hello, I am trying to run a program in ROS that uses an intel real sense camera, but let me go back first. I initially tried running my script for the camera from the home directory on my raspberry pi 4. I got the issue "AttributeError: module 'pyrealsense2' has no attribute 'pipeline'. I then solved this by copying the three pyrealsense ".so" files to the home directory (The same as the python file I am trying to run. Once I got it working by itself, I then tried moving everything into my larger ROS python script. I then moved everything (including the .so files) into my source folder (/catkin_workspace/src/ros_kortex/kortex_examples/src/full_arm). This directory is where my ROS python file is located, so I assumed it would have the same positive affect by moving everything here, but when I run my script I get the original error of ""AttributeError: module 'pyrealsense2' has no attribute 'pipeline'". In the header of my ROS file I have, sys.path.append('/home/pi/catkin_workspace/src/ros_kortex/kortex_examples/src/full_arm') and this helps when importing external python scripts to my main file. I then have import realsense_depth #Class with camera functions If adding the .so files helped when the files were in the home directory, then why is it not working when I move everything into this new directory? any ideas? [link] [comments] |
| How do i know if I'm programming the right way? Posted: 07 Dec 2021 05:19 AM PST I'm a mostly self taught programmer , and I'm programming in C# using .net The thing is I make apps and they work. But IDK. If the way I make them is.... "Practical" For example till 2 month ago i didn't even know what a "Linked list" is and I used regular arrays for everything Since then I always wondered how to make sure I'm writing code "The right way" I don't know if i delivered the message but i hope you get it. Any advice would be appreciated. [link] [comments] |
| Most comfortable chair for long coding sessions? Posted: 07 Dec 2021 04:13 AM PST Something that gets me in the zone? Something that supports good posture for improved patience Preferably something that looks decent. Peace / E [link] [comments] |
| Is doing a project the key to improving programming? Posted: 07 Dec 2021 01:17 AM PST Is doing a project the key to improving programming? -> Is doing a project the key to improving programming skill? Right now, I'm making projects into curiosities and things that I don't know about but I don't feel like I've grown much. and I feel I am poop 1 . should i keep that I am doing? 2 . If question of title is true, What specific projects will help you grow? [link] [comments] |
| Programmers, what you suggest for productivity via tools Posted: 06 Dec 2021 10:54 PM PST I personally enjoy learning tools that are productivity related. And i learn those when i can't focus in programming. I am learning vim today. What other tools you suggest? [link] [comments] |
| Posted: 06 Dec 2021 10:40 PM PST Hi! Thank you in advance for reading my description. I would like to make a project that involves visualizing some basic sorting algos. I plan to begin with the heap sort and work my way up from there. I am no problem with the mechanics of the heap sort and implementing that, but I don't have much experience with UI and bringing projects to 'life'. I want it to be interactive while it is sorting, so people can see the actual steps involved. I know that will depend on the input too. Does anyone have any recommendations for how I can implement this. Ideally in java, but open to python or C++ too. I am thinking it would be a java UI library and work my way from there? Let me know! [link] [comments] |
| I want to be able to play mp4 videos without a library Posted: 06 Dec 2021 10:07 PM PST if u want to say "u should not do it because its reinventing the wheel",pls ignore this post Now I could extract each container, but I don't know how to make a video from these containers Question1 . How can I play mp4 with these info? (I am welcome even answer is blog link) (because I could not find blog that explain about this details) [link] [comments] |
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