投稿時間:2023-04-10 22:11:53 RSSフィード2023-04-10 22:00 分まとめ(13件)

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js	JavaScriptタグが付けられた新着投稿 - Qiita	初めてのSvelte開発！AIイラスト補助アプリを作ってみた感想	https://qiita.com/toromo/items/90a11f6a7d70989d1b5c	cyberprompter	2023-04-10 21:58:50
js	JavaScriptタグが付けられた新着投稿 - Qiita	2つの地点間の標高の求め方と地形の断面図	https://qiita.com/murasuke/items/03d7c4bf9e816a34b7f1	国土地理院	2023-04-10 21:50:29
AWS	AWSタグが付けられた新着投稿 - Qiita	AWS IoT Greengrass ハンズオン	https://qiita.com/kennyQiita/items/abfe1a020bcc3ed9d597	awsiotgreengr	2023-04-10 21:41:37
技術ブログ	Mercari Engineering Blog	社内ハッカソン”Mercari Hack Fest”の作り方 ~ 2023年春ver. ~	https://engineering.mercari.com/blog/entry/20230410-b286fe9577/	hahellip	2023-04-10 13:17:44
海外TECH	DEV Community	Introduction to Object-Oriented Programming (OOP)	https://dev.to/igmrrf/introduction-to-object-oriented-programming-oop-357o	Introduction to Object Oriented Programming OOP Object oriented programming OOP is a popular programming paradigm that has gained widespread adoption in software development due to its ability to efficiently represent and manipulate complex data structures In this article we will provide a comprehensive introduction to OOP including its basic principles concepts and benefits with a focus on how it can be used in modern software engineering projects What is Object Oriented Programming OOP At its core OOP is a programming paradigm that organizes code into objects which are instances of classes A class is a blueprint or template that defines the structure and behavior of objects while objects are actual instances of those classes that represent real world entities or concepts OOP allows developers to model complex systems with classes and objects providing a way to organize and encapsulate data and behavior into self contained units Basic Principles of OOPOOP is based on four fundamental principles known as the Four Pillars of OOP These principles are Encapsulation Encapsulation is the process of hiding the internal details of an object and exposing only what is necessary It allows for data and behavior to be bundled together in a class which can then be accessed and modified only through defined interfaces This helps in achieving data security maintainability and reusability Inheritance Inheritance allows classes to inherit properties and methods from other classes creating a hierarchical relationship between classes It promotes code reuse and enables the creation of specialized classes that inherit common behavior from a more general class Polymorphism Polymorphism allows objects of different classes to be treated as objects of a common interface or superclass It provides flexibility and extensibility in code allowing for interchangeable use of objects with different implementations Abstraction Abstraction is the process of simplifying complex systems by representing them with abstract classes or interfaces that define common behavior It allows for the creation of high level abstractions that hide the implementation details making the code more maintainable and adaptable to changes Benefits of OOPOOP offers several benefits that make it a popular choice in software engineering projects Modularity OOP promotes modularity by encapsulating data and behavior into classes and objects This makes it easier to understand modify and maintain code as changes in one part of the system do not necessarily impact the entire codebase Reusability OOP allows for the creation of reusable classes and objects which can be used across different projects This reduces duplication of code improves development efficiency and promotes a consistent coding style Flexibility OOP provides flexibility in code design and implementation allowing for changes to be made more easily without affecting the entire system This makes it easier to adapt to changing requirements and improve the overall quality of the software Code Organization OOP provides a clear structure and organization to code making it easier to understand and maintain Classes and objects help in categorizing and grouping related data and behavior making it more intuitive to navigate and debug code ConclusionObject oriented programming OOP is a powerful paradigm that has revolutionized the way software is developed Its principles of encapsulation inheritance polymorphism and abstraction provide a solid foundation for building complex and scalable software systems With its benefits of modularity reusability flexibility and code organization OOP has become a widely adopted approach in modern software engineering By understanding the basic concepts and principles of OOP software developers can leverage its advantages to create robust and maintainable code for a wide range of applications	2023-04-10 12:21:17
海外TECH	DEV Community	How to Make a Simple Compass App for Android OS? Easy Step by Step Guide with Sample Code	https://dev.to/dhruvjoshi9/how-to-make-a-simple-compass-app-for-android-os-easy-step-by-step-guide-with-sample-code-13h4	How to Make a Simple Compass App for Android OS Easy Step by Step Guide with Sample CodeHave you ever been lost in a new city and wished you had a compass to help you find your way With the power of technology in our hands we can now create our compass app In this blog post we ll show you how to create a simple compass app for Android OS using just a few easy steps First let s dive into how a compass app actually works The app uses the phone s built in magnetometer and accelerometer sensors to detect the magnetic field and orientation of the phone By combining these two readings the app can determine the direction the phone is facing and display it on the screen It s like having a digital compass right in your pocket Now let s get started with the tutorial I ll guide you through the steps to create your own compass app with a sample code you can follow Don t worry if you re not a programming expert we ll explain everything in simple terms so anyone can understand By the end of this tutorial you ll have your very own compass app to use whenever you need to find your way Plus if you re a developer you can use this as a starting point to create even more advanced apps that utilize the phone s sensors Wait Wait wait If you are a startup entrepreneur or enterprise interested in similar app development don t wait and reach out to the best Android app development services for sleek apps with unique features So let s get started on this exciting journey to create your compass app Let s move onto the steps to create a simple compass app for Android OS Step Create a New ProjectTo create a new project open Android Studio and click on Start a new Android Studio project or go to File gt New gt New Project Enter the name of the project and choose the minimum SDK level Then click on Next Step Add Permissions to the Manifest FileTo access the phone s sensors we need to add permissions to the manifest file Open the manifest file located in app gt manifests gt AndroidManifest xml and add the following code snippet inside the tag lt uses permission android name android permission ACCESS FINE LOCATION gt lt uses feature android name android hardware sensor accelerometer gt lt uses feature android name android hardware sensor compass gt Step Design the User InterfaceNow it s time to design the user interface of our compass app Open the activity main xml file located in app gt res gt layout and add the following code snippet lt xml version encoding utf gt lt RelativeLayout xmlns android xmlns tools android layout width match parent android layout height match parent tools context MainActivity gt lt ImageView android id id compass android layout width wrap content android layout height wrap content android layout centerInParent true android src drawable compass gt lt RelativeLayout gt In this code snippet we have added an ImageView to display the compass image The image is centered in the parent RelativeLayout Step Add Code to MainActivity java FileNow let s add the code to MainActivity java file Open the MainActivity java file located in app gt java gt com example yourappname and add the following code snippet package com example yourappname import androidx appcompat app AppCompatActivity import android content Context import android graphics Bitmap import android graphics BitmapFactory import android graphics Canvas import android graphics Matrix import android hardware Sensor import android hardware SensorEvent import android hardware SensorEventListener import android hardware SensorManager import android os Bundle import android widget ImageView public class MainActivity extends AppCompatActivity implements SensorEventListener private ImageView compassImage private SensorManager sensorManager private Sensor magnetometer private Sensor accelerometer private float lastAccelerometer new float private float lastMagnetometer new float private boolean lastAccelerometerSet false private boolean lastMagnetometerSet false private float rotationMatrix new float private float orientation new float Override protected void onCreate Bundleprotected void onCreate Bundle savedInstanceState super onCreate savedInstanceState setContentView R layout activity main compassImage findViewById R id compass sensorManager SensorManager getSystemService Context SENSOR SERVICE magnetometer sensorManager getDefaultSensor Sensor TYPE MAGNETIC FIELD accelerometer sensorManager getDefaultSensor Sensor TYPE ACCELEROMETER Overrideprotected void onResume super onResume sensorManager registerListener this magnetometer SensorManager SENSOR DELAY GAME sensorManager registerListener this accelerometer SensorManager SENSOR DELAY GAME Overrideprotected void onPause super onPause sensorManager unregisterListener this magnetometer sensorManager unregisterListener this accelerometer Overridepublic void onSensorChanged SensorEvent event if event sensor magnetometer System arraycopy event values lastMagnetometer event values length lastMagnetometerSet true else if event sensor accelerometer System arraycopy event values lastAccelerometer event values length lastAccelerometerSet true if lastAccelerometerSet amp amp lastMagnetometerSet SensorManager getRotationMatrix rotationMatrix null lastAccelerometer lastMagnetometer SensorManager getOrientation rotationMatrix orientation float azimuthInRadians orientation float azimuthInDegrees float Math toDegrees azimuthInRadians Bitmap originalBitmap BitmapFactory decodeResource getResources R drawable compass Matrix matrix new Matrix matrix postRotate azimuthInDegrees Bitmap rotatedBitmap Bitmap createBitmap originalBitmap originalBitmap getWidth originalBitmap getHeight matrix true compassImage setImageBitmap rotatedBitmap Overridepublic void onAccuracyChanged Sensor sensor int accuracy In this code snippet we have defined the variables we will use to access the sensors and we have also defined the methods that will be called when the sensor values change In the onCreate method i have initialized the compassImage ImageView and the sensorManager and sensor objects In the onResume and onPause methods i have registered and unregistered the sensor listeners In the onSensorChanged method i have retrieved the magnetometer and accelerometer readings and calculated the rotation matrix and orientation I have then calculated the azimuth angle and rotated the compass image using a matrix Finally i have set the rotated bitmap to the compassImage ImageView In the onAccuracyChanged method i have not added any code as we don t need to handle any changes in sensor accuracy Step Run the AppNow it s time to run the app Connect your Android device to your computer select your device from the dropdown list in Android Studio and click on the Run button The app will be installed on your device and you can use it to find the direction you are facing ConclusionIn this blog post we have learned how to make a simple compass app for Android OS using easy step by step guide with sample code We have covered the basic steps of creating a new project adding permissions to the manifest file designing the user interface and adding the code to MainActivity java file By following these steps you can create your own compass app and customize it according to your needs Well this is just a compass app There are unlimited possibilities for Android app development If you are a startup or enterprise or company or an entrepreneur who wants to develop similar apps or wants any help reach a good mobile app development company Happy Coding	2023-04-10 12:16:11
海外TECH	Engadget	'Star Wars: The Bad Batch' is getting a third, and final, season	https://www.engadget.com/star-wars-the-bad-batch-is-getting-a-third-and-final-season-121235666.html?src=rss	x Star Wars The Bad Batch x is getting a third and final seasonDisney s Star Wars The Bad Batch is coming back for one last ride with a third and final season with Lucasfilm announcing the news on the fourth day of the Star Wars Celebration event The show follows the Clone Wars depicting a group of experimental clone troopers each with their own skill who break away from their army units to form a mercenary groupExecutive producers Athena Portillo Jennifer Corbett and Brad Rau shared the news during a panel at the celebration available to watch through a recorded stream of the Star Wars Celebration The teaser trailer debuted during the panel but it hasn t been independently released yet nbsp nbsp Just announced at StarWarsCelebration StarWars TheBadBatch will return for a third and final season on DisneyPlus in pic twitter com RzSeMrKaーStar Wars starwars April The annual Star Wars celebration serves as a platform to announce big releases as well as cultivate the franchise s vast fanbase such as connecting cast and crew with fans This year s announcements include Return of the Jedi s th anniversary return to theaters cast members for upcoming releases Acolyte and Ahsoka and over new figurines from Hasboro Star Wars Star Wars The Bad Batch season three is already in production but it isn t slated to debut until sometime in In the meantime seasons one and two are available to stream on Disney nbsp This article originally appeared on Engadget at	2023-04-10 12:12:35
ニュース	BBC News - Home	Junior doctors' strike: NHS chief calls for Acas help with talks	https://www.bbc.co.uk/news/uk-65230594?at_medium=RSS&at_campaign=KARANGA	confederation	2023-04-10 12:29:44
ニュース	BBC News - Home	Teaching union NASUWT calls for Ofsted to be abolished	https://www.bbc.co.uk/news/uk-65232137?at_medium=RSS&at_campaign=KARANGA	perry	2023-04-10 12:51:08
ニュース	BBC News - Home	Sir Keir Starmer: 'I stand by every word' says Labour leader on Rishi Sunak attack ad	https://www.bbc.co.uk/news/uk-65228859?at_medium=RSS&at_campaign=KARANGA	Sir Keir Starmer x I stand by every word x says Labour leader on Rishi Sunak attack adThe Labour leader is accusing Rishi Sunak and the government of failing on a number of law and order issues	2023-04-10 12:15:29
ニュース	BBC News - Home	Lasse Wellander: Abba pay tribute to guitarist's 'musical brilliance'	https://www.bbc.co.uk/news/entertainment-arts-65232127?at_medium=RSS&at_campaign=KARANGA	swedish	2023-04-10 12:37:56
ニュース	BBC News - Home	Lithium: A white gold rush excites Cornwall - but who gains?	https://www.bbc.co.uk/news/uk-politics-65184600?at_medium=RSS&at_campaign=KARANGA	battery	2023-04-10 12:44:38
仮想通貨	BITPRESS（ビットプレス）	ガイア、2023/4/6より暗号資産自動両替機「BTM」の販売を開始	https://bitpress.jp/count2/3_11_13594	資産	2023-04-10 21:21:52