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The HTML DOM Anchor port property is used to set or return the port of the href attribute.Following is the syntax to set the port property−anchorObj.port = numAbove, num is the port number of the url.Following is the syntax to return the port property−anchorObj.portLet us now see an example to implement the DOM Anchor port property−Example Live Demo Demo heading Services Display pathname Display hreflang Display port function display1() { var a = document.getElementById("mylink").pathname; document.getElementById("myid").innerHTML = a; } function display2() { ... Read More
Unlike C/C++ Long in Python 3 have unlimited precision and there is no explicitly defined limit. The amount of available address space considered to be the practical limit.In python 2, integers will automatically switch to longs when they grown beyond their limit −Python 2>>> import sys >>> type(sys.maxint) >>> type(sys.maxint + 1) Python 3Maxint was removed in python 3, but sys.maxsize can often be used instead.>>> import sys >>> type (sys.maxsize) >>> type (sys.maxsize + 1) From above output we can see, in python 3 int and long are actually merged and the value has no such importance.#Python ... Read More
ResultSet holdability determines whether the ResultSet objects (cursors) should be closed or held open when a transaction (that contains the said cursor/ ResultSet object) is committed using the commit() method of the Connection interface.ResultSet interface provides two values to specify the holdability namely CLOSE_CURSORS_AT_COMMIT and HOLD_CURSORS_OVER_COMMITIf the holdability of the ResultSet object is set to this value. Whenever you commit/save a transaction using the commit() method of the Connection interface, the ResultSet objects created in the current transaction (that are already opened) will be closed.Therefore, if you need to close the ResultSet cursor after the commit automatically, set the ResultSet ... Read More
To create a collection correctly you need to use a MongoDB object in call i.e.db.createCollection("yourCollectionName");Let us implement the above syntax in order to create a collection and call it using a MongoDB object −> use sample; switched to db sample > db.createCollection("employeeInformation"); { "ok" : 1 }Display all the collections from the above ‘sample’ database −> db.getCollectionNames();This will produce the following output −[ "arraySizeErrorDemo", "atleastOneMatchDemo", "basicInformationDemo", "combinedAndOrDemo", "convertSQLQueryDemo", "copyThisCollectionToSampleDatabaseDemo", "countOrSizeDemo", "distinctOnMultipleFieldsDemo", "documentWithAParticularFieldValueDemo", "employee", "employeeInformation", "findListOfIdsDemo", "findMimimumElementInArrayDemo", "findSubstring", "getAllRecordsFromSourceCollectionDemo", "getElementWithMaxIdDemo", "insertDocumentWithDateDemo", "internalArraySizeDemo", ... Read More
To highlight a row in a table, you can use the addRowSelectionInterval() method. At first create a table −DefaultTableModel tableModel = new DefaultTableModel(); JTable table = new JTable(tableModel);Add some columns −tableModel.addColumn("Language/ Technology"); tableModel.addColumn("Text Tutorial"); tableModel.addColumn("Video Tutorial"); tableModel.addColumn("Views");Now, add rows to the table −tableModel.addRow(new Object[] { "NodeJS", "No", "Yes", "2350"}); tableModel.addRow(new Object[] { "MVC", "Yes", "No", "1500"}); tableModel.addRow(new Object[] { "ASP.NET", "Yes", "Yes", "3400"}); tableModel.addRow(new Object[] { "F#", "Yes", "No", "7890"}); tableModel.addRow(new Object[] { "Blockchain", "Yes", "No", "10600"}); tableModel.addRow(new Object[] { "SharePoint", "Yes", "Yes", "4900"});Highlight a single row by adding interval of rows. Set the same index for both the parameters ... Read More
Digital Signature is a mathematical technique which is used to authenticate a digital document. This is equivalent to handwritten signature or a stamped seal and offers far more security and integrity to the message or digital document. It solves the problem of impersonation in digital communications by providing evidence of origin, identity and status of the digital transactions. Many countries like the United States of America consider digital signatures as legal. They even publish public laws, private laws and the Budget with digital signatures.How does a Digital Signature Work?Digital signatures are based on asymmetric cryptography, which means that the information ... Read More
If you will try to use the method drop(), then it will delete all information about the collection. Indexing is fast. However, if you will use the method remove(), then it removes all records but keeps the collection and indexes.Let us check with the help of example.Using drop()Let us first create a collection with documents −> db.dropWorkingDemo.createIndex({"FirstName":1}); { "createdCollectionAutomatically" : true, "numIndexesBefore" : 1, "numIndexesAfter" : 2, "ok" : 1 } > db.dropWorkingDemo.insertOne({"FirstName":"John"}); { "acknowledged" : true, "insertedId" : ObjectId("5cdd8742bf3115999ed511e9") }Following is the query to display all documents from a collection with the ... Read More
C++ has a standard library that contains common functionality you use in building your applications like containers, algorithms, etc. If names used by these were out in the open, for example, if they defined a queue class globally, you'd never be able to use the same name again without conflicts. So they created a namespace, std to contain this change.The using namespace statement just means that in the scope it is present, make all the things under the std namespace available without having to prefix std:: before each of them.While this practice is okay for example code, pulling in the ... Read More
We use gcc and g++ compilers in different times. Here we will see what are the differences between gcc and g++.The gcc is GNU C compiler, and g++ is GNU C++ compiler. The main differences are like below −gcc can compile *.c or *.cpp files as C and C++ respectivelyg++ can also compile *.c and *.cpp files, but take both as C++ fileIf we want to use g++ to link the object files, it automatically links in the STD C++ libraries. The gcc does not do thatgcc compiles C files which has fewer predefined macrosgcc compiles C++ files with more ... Read More
ResultSet holdability determines whether the ResultSet objects (cursors) should be closed or held open when a transaction (that contains the said cursor/ ResultSet object) is committed using the commit() method of the Connection interface.ResultSet interface provides two values to specify the holdability namely CLOSE_CURSORS_AT_COMMIT and HOLD_CURSORS_OVER_COMMITIf the holdability of the ResultSet object is set to this value. Whenever you commit/save a transaction using the commit() method of the Connection interface, the ResultSet objects created in the current transaction (that are already opened) will be held open.Therefore, if you need to hold the ResultSet cursor open after the commit automatically, set ... Read More