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Here we will see the effect of nextafter() and nextforward() functions in C or C++. These functions are present in the math.h or cmath library.if the functions are like nextafter(a, b) and nextforward(a, b). These functions are used to find the next representable value after a in the direction of b. The nextforward() has more precise second parameter b.Example#include #include main () { //The nextafter function() printf ("Smallest representable number after 0 towards 1 : %e", nextafter(0.0, 1.0)); printf ("Largest representable number before -1 towards 0 :%e", nextafter(0.0, -1.0)); printf ("Largest +ve representable number ... Read More
When we execute certain SQL queries (SELECT query in general) they return tabular data.The java.sql.ResultSet interface represents such tabular data returned by the SQL statements.i.e. the ResultSet object holds the tabular data returned by the methods that execute the statements which quires the database (executeQuery() method of the Statement interface in general).The ResultSet object has a cursor/pointer which points to the current row. Initially this cursor is positioned before first row.The isClosed() method of the ResultSet interface is used to determine whether the current ResultSet object is closed.rs.isclosed()CLOSE_CURSORS_AT_COMMITIf the holdability of the ResultSet object is set to this value. Whenever you commit/save ... Read More
Use $in operator to get at least one match. Let us first create a collection with documents −> db.atleastOneMatchDemo.insertOne({"StudentFavouriteSubject":["MySQL", "MongoDB"]}); { "acknowledged" : true, "insertedId" : ObjectId("5cd2db5db64f4b851c3a13ce") } > db.atleastOneMatchDemo.insertOne({"StudentFavouriteSubject":["Java", "C", "MongoDB"]}); { "acknowledged" : true, "insertedId" : ObjectId("5cd2db71b64f4b851c3a13cf") } > db.atleastOneMatchDemo.insertOne({"StudentFavouriteSubject":["Python", "C++", "SQL Server"]}); { "acknowledged" : true, "insertedId" : ObjectId("5cd2db87b64f4b851c3a13d0") } >db.atleastOneMatchDemo.insertOne({"StudentFavouriteSubject":["Ruby", "Javascript", "C#", "MySQL"]}); { "acknowledged" : true, "insertedId" : ObjectId("5cd2dba9b64f4b851c3a13d1") }Following is the query to display all documents from a collection with the help of find() method −> db.atleastOneMatchDemo.find().pretty();This will produce the following output −{ "_id" : ... Read More
Yes, we can save the content to a file with FileWriter class. Set a JTextFile component as shown below −JTextField emailId = new JTextField(20); emailId.setText("abc@example.com");Set the file location from to where you want to save the content from the JTextField −String file = "E:ew.txt";Now, with FileWriter, save the content −FileWriter fileWriter = new FileWriter(file); emailId.write(fileWriter); fileWriter.close();The following is an example to save content from JTextFile to a file. Here, we are saving the text from JTextField to a file at location: “E:ew.txt” −Examplepackage my; import java.awt.FlowLayout; import java.io.FileWriter; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JTextField; import javax.swing.SwingConstants; public class SwingDemo { ... Read More
To update all elements in an array with a prefix string, use forEach(). Let us first create a collection with documents −> db.replaceAllElementsWithPrefixDemo.insertOne( { "StudentNames" : [ "John", "Carol" ] } ); { "acknowledged" : true, "insertedId" : ObjectId("5cd91908b50a6c6dd317ad8e") } > > > db.replaceAllElementsWithPrefixDemo.insertOne( { "StudentNames" : [ "Sam" ] } ); { "acknowledged" : true, "insertedId" : ObjectId("5cd9191cb50a6c6dd317ad8f") }Following is the query to display all documents from ... Read More
The HTML DOM Input Time max property returns/sets max attribute of Input Time.SyntaxFollowing is the syntax −Returning string valueinputTimeObject.maxSetting max to string valueinputTimeObject.max = hh:mm:ss.msString ValuesHere, “hh:mm:ss.ms” can be the following −stringValueDetailshhIt defines hour (eg:18)mmIt defines minutes (eg:59)ssIt defines seconds (eg:00)msIt defines milli-seconds (eg:700)ExampleLet us see an example of Input Time max property − Live Demo Input Time max form { width:70%; margin: 0 auto; text-align: center; } * { padding: 2px; margin:5px; } input[type="button"] { border-radius: ... Read More
The threa_cancel() is used to cancel one particular thread by the thread id. This function sends one cancellation request to the thread for termination. The syntax of the pthread_cancel() is like below −int pthread_cancel(pthread_t th);Now, let us see how to cancel threads using this function.Example#include #include #include #include int count = 0; pthread_t sample_thread; void* thread_one_func(void* p) { while (1) { printf("This is thread 1"); sleep(1); // wait for 1 seconds count++; if (count == 5) { //if the ... Read More
This example demonstrate about How to use Notification Inbox style in AndroidStep 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
Use dot notation(.) to search in inner classes using MongoDB. Let us first create a collection with documents −> db.searchInInnerDemo.insertOne( ... { ... "StudentFirstName" : "Robert", ... "StudentTechnicalDetails": ... { ... "StudentBackEndTechnology" : "MongoDB", ... "StudentLanguage" : "Java" ... } ... } ... ); { "acknowledged" : true, "insertedId" : ObjectId("5cd2dd89b64f4b851c3a13d2") } > > db.searchInInnerDemo.insertOne( ... { ... "StudentFirstName" : "David", ... "StudentTechnicalDetails": ... { ... ... Read More
You can use the concept of Map Reduce. Let us first create a collection with documents −> db.getAllFieldNamesDemo.insertOne({"StudentFirstName":"David", "StudentAge":23}); { "acknowledged" : true, "insertedId" : ObjectId("5cd998e9b50a6c6dd317ad90") }Following is the query to display all documents from a collection with the help of find() method −> db.getAllFieldNamesDemo.find();This will produce the following output −{ "_id" : ObjectId("5cd998e9b50a6c6dd317ad90"), "StudentFirstName" : "David", "StudentAge" : 23 }Following is the query to get all fields names in a MongoDB collection −> myMapReduce = db.runCommand({ "mapreduce" : "getAllFieldNamesDemo", "map" : function() { for (var myKey in this) { emit(myKey, null); } ... Read More