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Files with '.plist' the extension is used by Mac OS X applications to store application properties. The plislib module provides an interface to read/write operations of these property list files.The plist file format serializes basic object types, like dictionaries, lists, numbers, and strings. Usually, the top level object is a dictionary. To write out and to parse a plist file, use the dump() and load() functions. Serialized byte strings are handled by use dumps() and loads() functions. Values can be strings, integers, floats, booleans, tuples, lists, dictionaries (but only with string keys).This module defines the following functions −load()Read a plist ... Read More
The buffer attribute specifies the buffering characteristics for the server output response object.You may code a value of "none" to specify no buffering so that the servlet output is immediately directed to the response object or you may code a maximum buffer size in kilobytes, which directs the servlet to write to the buffer before writing to the response object.To direct the servlet to write the output directly to the response output object, use the following −Use the following to direct the servlet to write the output to a buffer of size not less than 8 kilobytes −
The drainTo() method of the ArrayBlockingQueue class removes all available elements from this queue and adds them to the given collection. It returns the number of elements transferred.The syntax is as followsint drainTo(Collection
You can use GROUP_CONCAT() for this. To understand the above concept, let us create a table.The query to create a table is as followsmysql> create table groupByDemo -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> Name varchar(100) -> ); Query OK, 0 rows affected (1.31 sec)Insert some records in the table using insert command.The query is as followsmysql> insert into groupByDemo(Name) values('John'); Query OK, 1 row affected (0.19 sec) mysql> insert into groupByDemo(Name) values('Carol'); Query OK, 1 row affected (0.14 sec) mysql> insert into groupByDemo(Name) values('Carol'); Query OK, 1 row affected (0.10 sec) ... Read More
Yes, to query for a field in an object in the array with MongoDB, use the following syntax −db.yourCollectionName.find({"yourOuterFieldName": { $elemMatch: { "yourInnerFieldName": "yourValue" } } } ).pretty();To understand the above concept, let us create a collection with the document. The query to create a collection with a document is as follows −> db.objectInAnArrayDemo.insertOne({ "StudentDetails": [{ "StudentName": "John", "StudentMessage": "Hi"}, {"StudentName": "Larry", "StudentMessage": "Hello"}]}) { "acknowledged" : true, "insertedId" : ObjectId("5c92635d36de59bd9de06381") } > db.objectInAnArrayDemo.insertOne({ "StudentDetails": [{ "StudentName": "Carol", "StudentMessage": "Hello"}, {"StudentName": "David", "StudentMessage": "Good Morning"}]}) { "acknowledged" : true, "insertedId" : ObjectId("5c92637936de59bd9de06382") }Display all documents ... Read More
To query an array string for a regexp match, use the following syntaxdb.yourCollectionName.find( { yourFieldName: /yourStartingValue./ } ).pretty();Let us first create a collection with documents> db.queryArrayDemo.insertOne({"StudentFullName":["Carol Taylor", "Caroline Williams", "Claire Brown"]}); { "acknowledged" : true, "insertedId" : ObjectId("5ca2774c6304881c5ce84ba0") } > db.queryArrayDemo.insertOne({"StudentFullName":["John Smith", "Jace Doe", "Jabin Brown"]}); { "acknowledged" : true, "insertedId" : ObjectId("5ca277b36304881c5ce84ba1") }Following is the query to display all documents from a collection with the help of find() method> db.queryArrayDemo.find().pretty();This will produce the following output{ "_id" : ObjectId("5ca2774c6304881c5ce84ba0"), "StudentFullName" : [ "Carol Taylor", "Caroline Williams", ... Read More
A thread safe version of the set is the CopyOnWriteArraySet in Java. This set uses an CopyOnWriteArrayList internally for the set operations. The CopyOnWriteArraySet was introduced by the JDK 1.5.A program that demonstrates this is given as follows −Example Live Demoimport java.util.concurrent.*; public class Demo extends Thread { public static void main(String[] args) { CopyOnWriteArraySet cowArraySet = new CopyOnWriteArraySet(); cowArraySet.add("Amy"); cowArraySet.add("John"); cowArraySet.add("Bob"); cowArraySet.add("Clara"); cowArraySet.add("Peter"); System.out.println(cowArraySet); } }The output of the above program is as follows −Output[Amy, John, Bob, ... Read More
In this program we will see how to find the average of n numbers in a given series.Problem StatementWrite 8086 Assembly language program to find the average of n numbers stored in a given series starts from memory offset 501. The size of the series is stored at memory offset 500.DiscussionTo do this task we are initializing the Source Index (SI) register to the starting address of the series. We are also taking the series size into CL. The CL will be used as counter. To store add we are using AL register. Initially set AL to 0. In each ... Read More
Before getting into example, we should know what sqlite data base in android is. SQLite is an open source SQL database that stores data to a text file on a device. Android comes in with built in SQLite database implementation. SQLite supports all the relational database features. In order to access this database, you don't need to establish any kind of connections for it like JDBC, ODBC etc.This example demonstrate about How to use DISTINCT to remove duplication in Android sqlite.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required ... Read More
The dbm package in Python's built-in library provides a dictionary like an interface DBM style databases. The dbm library is a simple database engine, written by Ken Thompson. DBM stands for DataBase Manager, used by UNIX operating system, the library stores arbitrary data by use of a single key (a primary key) in fixed-size buckets and uses hashing techniques to enable fast retrieval of the data by key.There are following modules in dbm package −The dbm.ndbm module provides an interface to the Unix “(n)dbm” library. Dbm objects behave like dictionaries, with keys and values should be stored as bytes. The ... Read More