mars-rover | Mars Rover in Javascript | Robotics library
kandi X-RAY | mars-rover Summary
kandi X-RAY | mars-rover Summary
A squad of robotic rovers are to be landed by NASA on a plateau on Mars. This plateau, which is curiously rectangular, must be navigated by the rovers so that their on-board cameras can get a complete view of the surrounding terrain to send back to Earth. A rover's position and location is represented by a combination of x and y co-ordinates and a letter representing one of the four cardinal compass points. The plateau is divided up into a grid to simplify navigation. An example position might be 0, 0, N, which means the rover is in the bottom left corner and facing North. In order to control a rover, NASA sends a simple string of letters. The possible letters are 'L', 'R' and 'M'. 'L' and 'R' makes the rover spin 90 degrees left or right respectively, without moving from its current spot. 'M' means move forward one grid point, and maintain the same heading. Assume that the square directly North from (x, y) is (x, y+1).
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QUESTION
My app uses a NASA API to get images from the mars rover. The file where I keep the api key is called Constrant.swift. I tried to hide this file by creating a .gitingore file. I typed Constrant.swift into the .gitignore file and then pressed save and pushed all of the files to GitHub. The problem that I am having is that when I pushed all of the files the Constrant.swift was all pushed and was not ignored. The api key is not that important, but I would still like to know what I did wrong and how to fix it.
The link to the repository is here. As you can see the .gitignore file is still there and has Constrant.swift. However, when you press nasaAPI, the Constrant.swift file is still there. Also I created the .gitignore file before I added the Constrant.swift file. How would I remove this file from GitHub and hide it in the .gitignore file?
...ANSWER
Answered 2021-Jul-20 at 22:08First of all, you must also add the folder in where the * Constrant.swift* is located to .gitignore
, and not only the file name:
QUESTION
I am attempting to create simple text over image, but I can't work it out.
I have created a
...ANSWER
Answered 2021-Feb-25 at 05:58Try This, hope this work for you.
//CSS
QUESTION
Here is the JSON:
...ANSWER
Answered 2021-Feb-21 at 07:31You can see the description for JSON function here:
- JSON.parse() takes a JSON string and transforms it into a JavaScript object.
- JSON.stringify() takes a JavaScript object and transforms it into a JSON string.
In this case the fetch api always return Response Object. This is just an HTTP response, not the actual JSON. To extract the JSON body content from the response, we use the json() method. And after that you can use newsId.articles to get articles list
QUESTION
I'm using the latest version of Angular and in my researches I understand that every new release causes obvious changes in the imports of libraries. This is the way I was used to code in previous releases of Angular but now, as I build the app I get this error: this.currentUserSubject.asObservable is not a function
. I looked for similar issues but as I said, the new releases make things work differently and at this point, I'm completely lost...Can someone give me a help? The relevant code
Auth Service TS
...ANSWER
Answered 2020-Jul-19 at 20:10You need to initialize currentUserSubject as a subject instead of a string.
QUESTION
I have been creating a webpage teaching about Mars, and I wanted to see if I could make the background of an HTML5 page an image instead of a boring white colour. I do want this with a link, so teaching with a .jpg will not be useful. Here is some code I have tried:
...ANSWER
Answered 2020-Jun-01 at 20:37use the link to the jpg file in the src attribute instead of the html link, for this case,
QUESTION
In my React app, I added useHistory
to be able from my page Rovers to be redirect onClick
of a button to one specific page. That button is contained inside 3 divs where onClick takes the name of the Rover and open the right page related to that Rover selected.
On that page, I would like to add 2 links which will redirect to the other 2 Rovers so the user no need to back to the Rovers page all the time.
My issue I'm getting this error:
...ANSWER
Answered 2020-May-28 at 11:54The problem is that in your Card component, you navigate using history api and you specifically set state in the push
.
QUESTION
When working on the Mars Rover kata in java 8, we set out to try and go for max immutability and we ended up in this corner :
...ANSWER
Answered 2020-Apr-10 at 09:40for those interested: our current best effort resulted in the following:
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