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Ethereum Mining GuideEthereum Blockchain BasicsAs we all know, cryptocurrency mining is a process of solving complicated mathematical puzzles and miners play a crucial role in any cryptocurrency network as they spend their time and computing power to puzzle out those math problems, giving a ‘proof of work’ for the network, which verifies Ether transactions. Other than this, miners are responsible for making new Ether tokens through this process. This way, they get rewards in Ether for successfully completing a proof of work task.The more miners join the group, the puzzles automatically turn out more difficult to solve. This leads to ... Read More
To set limit to $inc, use the below syntax −db.yourCollectionName.update({yourFieldName : {$lt : yourValue}}, {$inc : {yourFieldName : yourIncrementValue}}, false, true);Let us first create a collection with documents −> db.limitIncrementDemo.insertOne({"StudentId":101, "StudentScore":95}); { "acknowledged" : true, "insertedId" : ObjectId("5cd2ce9eb64f4b851c3a13c3") } > db.limitIncrementDemo.insertOne({"StudentId":102, "StudentScore":55}); { "acknowledged" : true, "insertedId" : ObjectId("5cd2cea0b64f4b851c3a13c4") } > db.limitIncrementDemo.insertOne({"StudentId":103, "StudentScore":67}); { "acknowledged" : true, "insertedId" : ObjectId("5cd2cea1b64f4b851c3a13c5") } > db.limitIncrementDemo.insertOne({"StudentId":104, "StudentScore":56}); { "acknowledged" : true, "insertedId" : ObjectId("5cd2cea3b64f4b851c3a13c6") } > db.limitIncrementDemo.insertOne({"StudentId":105, "StudentScore":79}); { "acknowledged" : true, "insertedId" : ObjectId("5cd2cea4b64f4b851c3a13c7") }Following is the query to display all documents ... Read More
Use FlowLayout.RIGHT to arrange components in a FlowLayout to be right-justified. −JFrame frame = new JFrame("Language"); frame.setLayout(new FlowLayout(FlowLayout.RIGHT));The following is an example to arrange components in a flow to be right-justified −Examplepackage my; import java.awt.Color; import java.awt.Dimension; import java.awt.FlowLayout; import java.awt.Font; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JTextArea; import javax.swing.WindowConstants; public class SwingDemo { public static void main(String[] args) { JFrame frame = new JFrame("Language"); frame.setLayout(new FlowLayout(FlowLayout.RIGHT)); JLabel label = new JLabel("Most Spoken Language "); label.setPreferredSize(new Dimension(220, 70)); label.setOpaque(true); label.setBackground(Color.RED); ... Read More
To display tick marks in a JSlider, you need to use the setPaintTicks() method and set it to TRUE −JSlider slider = new JSlider(JSlider.HORIZONTAL, 0, 100, 75); slider.setPaintTicks(true);The following is an example to display tick marks in a slider in Java −Examplepackage my; import java.awt.Color; import java.awt.Font; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JSlider; import javax.swing.WindowConstants; public class SwingDemo { public static void main(String[] args) { JFrame frame = new JFrame("Frame with Slider"); JSlider slider = new JSlider(JSlider.HORIZONTAL, 0, 100, 75); slider.setMinorTickSpacing(5); slider.setMajorTickSpacing(20); slider.setPaintTicks(true); ... Read More
ECMAScript 5 has introduced several methods to prevent modification of object. Those preventive measures ensures that no one, accidentally or otherwise change functionality of object.There are 3 levels of preventive methods1) Prevent ExtensionsIn this level, one cannot add any new properties or methods but can access existing properties or methods. Here there is an ability to delete the respective object. Object.preventExtensions() is the method used to accomplish this task. It prevents any new properties from ever being added to the object.ExampleLive Demo var object1 = { prop1: 1 ... Read More
The HTML DOM Input Color disabled property sets/returns whether Input Color is enabled or disabled.SyntaxFollowing is the syntax −Returning boolean value - true/falseinputColorObject.disabledSetting disabled to booleanValueinputColorObject.disabled = booleanValueBoolean ValuesHere, “booleanValue” can be the following −booleanValueDetailstrueIt defines that the input color is disabled.falseIt defines that the input color is not disabled and it is also the default value.ExampleLet us see an example of Input Color disabled property − Live Demo Input Color Disabled Color Picker: Enable Color Input var divDisplay = document.getElementById("divDisplay"); var inputColor = document.getElementById("Color"); divDisplay.textContent = 'Color Input disabled: ... Read More
The HTML DOM Input Time defaultValue property sets/returns the default value corresponding to Time Input. The value attribute changes as the user changes the time but default value does not change.SyntaxFollowing is the syntax −Returning string valueinputTimeObject.defaultValueSetting defaultValue to stringinputTimeObject.defaultValue = ‘string’ExampleLet us see an example of Input Time defaultValue property − Live Demo Input Time defaultValue form { width:70%; margin: 0 auto; text-align: center; } * { padding: 2px; margin:5px; } input[type="button"] { border-radius: ... Read More
This might fall upon like a shock on those who think that only cash can be transact from an ATM. In this era of crypto and digital currency, things have taken a leap now. Thanks to technology! As of April 2019, there are more than 4, 518 bitcoin ATMs across the globe, the number is constantly on the surge, and so is the miners considering the fascination for this currency.However, the thought of getting them cash out leave many miners baffled; however, this read has been created to clear the air about all the doubts you have.The Functionality of Bitcoin ... Read More
This example demonstrate about How to style an Android notification using InboxStyleStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. Step 3 − Add the following code to src/MainActivity.package app.tutorialspoint.com.notifyme ; import android.app.NotificationChannel ; import android.app.NotificationManager ; import android.os.Bundle ; import android.support.v4.app.NotificationCompat ; import android.support.v7.app.AppCompatActivity ; import android.view.View ; public class MainActivity extends AppCompatActivity { public static final String NOTIFICATION_CHANNEL_ID = "10001" ; private final static String default_notification_channel_id = "default" ... Read More
It is up to you how much space you want. You need to use the parameter size to set. Use below syntax −db.createCollection(‘yourCollectionName’, capped=true, size=yourValue);Let us implement the above syntax in order to allow size for a capped collection −> db.createCollection('cappedCollectionMaximumSize', capped=true, size=1948475757574646); { "ok" : 1 }Let us check the description of the above collection −> db.cappedCollectionMaximumSize.find().explain();This will produce the following output −{ "queryPlanner" : { "plannerVersion" : 1, "namespace" : "test.cappedCollectionMaximumSize", "indexFilterSet" : false, "parsedQuery" : { }, "winningPlan" ... Read More