Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Articles on Trending Technologies
Technical articles with clear explanations and examples
Ways to use Where-Object in PowerShell
Where−Object or (alias: Where) in PowerShell is used to filter the data output provided through the Pipeline.There are two methods we can use the Where−Object for the pipeline inputs.a. ScriptMethod −In this method, we use ScriptBlock to filter the output with the Property name, value, and the comparison operator.Get−Service | Where−Object{($_.StartType −eq 'Automatic') −and ($_.Status −eq 'Stopped')}You can also use Alias: Where instead of Where−Object.Get−Service | Where{($_.StartType −eq 'Automatic') −and ($_.Status −eq 'Stopped')} Other Syntax ‘?’ (Question Mark) can also be used Instead of the Where−Object command.Get−Service | ?{($_.StartType −eq 'Automatic') −and ($_.Status −eq 'Stopped')}The above commands will get the ...
Read MoreSorting only columns of a 2-D array in JavaScript
We are required to write a JavaScript function that takes in a two-dimensional array of integers as the only argument.The function should sort the elements present at the column of the array in increasing or decreasing order.For example −If the input array is −const arr = [ [6, 2, 9], [8, 1, 4], [5, 3, 7] ];Then the array should be sorted like this −const output = [ [8, 3, 9], [6, 2, 7], [5, 1, 4] ];ExampleFollowing is the code −const arr = [ [6, 2, 9], [8, 1, 4], ...
Read MoreFile opening modes(r versus r+) in C++
File handling in programming languages is very important for the interaction of programming with the memory for accessing files and fetching data in it.Using a program, you can read data from a file as well as write data to the file and do a lot more functions.Here, we will see reading of data from a file.In programming, before performing any operation you need to open the file. And there are multiple modes to open a file in the programming language. The access to the file is based on the mode it is opened with.Here we will learn about the difference between ...
Read MoreFile globbing in Linux in C++
p>File globbing also known as Path Name Expansion. It is the method of recognizing wildcard patterns in linux and then finding the file path expansion based on these patterns.Wildcard Patterns are strings that are used for selection of multiple files based on patterns.The character patterns like “?” , “[ ]” , “*” are used for pattern matching and multiselection of the files.Example of wildcard characters using in file globbing:Asterisk (*) : the * pattern is used when we need to match 0 or more character after the string in the filename.For example: file* will match all files with name file, files, file2, or with anything ...
Read MoreFederated database management system issues in C++
Database Management System or DBMS in short refers to the technology of storing and retrieving usersí data with utmost efficiency along with appropriate security measures.Federated Database management system is a special type of DBMS in which transparently maps more that one autonomous database into one database which is federated database.The federated database management system is useful while working with multiple applications that uses federation of databases.There are some issues with the federated database management system. They are −Managing the difference in data models, while working with federated databases multiple applications can have different type of data models and dealing with these ...
Read MoreExtended Operators in Relational Algebra in C++
Relational data model is the primary data model, which is used widely around the world for data storage and processing. This model is simple and it has all the properties and capabilities required to process data with storage efficiency.They are basic operators on Relation Algebra, here we will learn about some extended operators. They are mainly of three types:Intersection Join Divide Intersection Operation i s a special type of operation in for relations R1 and R2 where the relation in which the tuples with elements present in both relations i.e. in relation R1 and R2. JOIN Conditional Join is a special type of join in which we ...
Read MoreExternal Sorting with Example in C++
External Sorting is a category of sorting algorithm that is able to sort huge amounts of data. This type of sorting is applied on data set which acquire large memory which cannot be holded in main memory (RAM) and is stored in secondary memory ( hard disk).The idea of sorting used in external sort is quite similar to merge sort. In also possess two phases like in merge sort, In the sort phase, small memory size data sets are sorted and then in merge phase, these are combined to a single dataset.External Sorting For a huge data set which cannot be processed in ...
Read MoreEndian order and binary files in C++
In the binary file and data management, endianness is the sequence of bytes of a digital data inside the computer memory.In computer memory there are two type of endian order,Big-endian system stores the most significant byte of the data.Small-endian systems store the least significant byte of the data.
Read MoreEditors and Its types in System Programming in C++
Editors are basically computer programs that are utilised to edit files on a computer. The provide environment to a programmer to create, edit, update, format a document in any order he/she wants to.In system programming or programming, editors are software or tools that are used to edit the program. These are basically text editors of special type that have integrated functionality to edit code.Some common program editors are notepad++, visual code, sublime. Also there are some edits that provide things used to do more than just editing the code. They are the integrated development environment (IDE) which can help you edit, debug and run ...
Read MoreDumpster Diving/Trashing in C++
Dumpster diving or trashing is a technique used in cyber security and information technology which is commonly used by hackers to extract data. It is based on the fact that “something which is worthless for someone can be of great usage for someone else”. It works based on the idiom, “One man’s trash is another man’s treasure”. Trashing refers to searching online trash (unused information) and finding out fruitful information about a business or person to use it to perform hacking related activities.This dumpster diving is used to gather information to try to hack or extract information of business using a phishing technique by pretending to be ...
Read More