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Mastering Development

How to set an attirbutes list when creating new object

Hope the title was not too confusing. I’ve been working on program and I have created so attribut with a default list in it. The thing is I don’t know how to do modification to that list when I create this object. Thank you def __init__(self,nm,pm,adss): self._nom = nm self._prenom = pm self._adresse = adss […]

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Game Creation Mastering Development

Class Not Found Exception on Class.forName()

I am having this exception on title. I have been following a LibGDX programming PDF, everything was working perfectly and then this code have been implemented, and it isnt working anymore. I should add that Rock and Starfish are classes on my project, and there is no typo on class names Caught message: java.lang.ClassNotFoundException: Rock […]

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Mastering Development

How can I convert a const char* to a string in CLR/C++ with FLTK to obtain the value of an FL_Input or other widget?

I have been recently constructing a program. The end goal is to get what the user has written in the Fl_Input box and write it into my database. To do this I am going to need a callback on a button that allows me to at least get the string value of an Fl_Input->value() The […]

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Mastering Development

Access position values from loaded CZML data using Cesiumjs

I load in a CZML file into my app.js file [both files are provided below]. I’m able to access the name and id fields but not the position field. The position field contains cartographic values as ‘time, longitude, latitude, altitude’. I’d like to access sets of these cartographic values so I can display them. For […]

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CMS Mastering Development Wordpress

Extract width and height values from add_image_size in Timber

I have set the following custom image size in my functions.php file: add_image_size( ‘search-image’, 320, 250, true );. In my search.twig file, I am using <img src=”” alt=”” /> to render the images. I would like to extract the dimension values from the custom image size and have them displayed in the width and height […]

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Mastering Development

how can i fix the java.lang.NullPointerException ? (java Eclipse)

i’m a beginner in programmaing field i’m working on project swing but i keep getting errors of exception can someone help me to resolve it i tried the try catch but it didn’t help i’m still a beginner i’m not that good here’s what it says when i run it: java.lang.NullPointerException at Home.Home(Home.java:316) at Home.<init>(Home.java:307) […]

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Mastering Development

Get a slow animations on using css when mouse out from de tag

When I put the mouse on my h1 element it scales by 2, so I want when the mouse gets out the h1 take his normal size but in the same way…slowly! .navBar h1:hover { color: rgb(248, 250, 144); transform: scale(1.7); transition: linear 1s; z-index: 10; text-shadow: 2px 8px 5px 1px rgba(224, 224, 117, 0.952); […]

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Mastering Development

Q: How Do I make A Coin System? In Pygame

I have made a simple game but I want to learn how to make a coin system for example This is my code right any help I would appreciate Thanks! my game so fare I want to learn how to make a simple coin system where coins spawn on my platforms and if I touch […]

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Mastering Development

How to get (correct) area using cv2?

I have an image containing a circle with r=100. The area of the circle should be pi*r^2 = pi*100^2 = 31415.9265359. import numpy as np import cv2 image = np.zeros((500, 500), dtype=np.uint8) image = cv2.circle(image, (250, 250) , 100, 1, -1) Using cv2 I want to get the area of the circle: contours, _ = […]