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C++ Interview Questions and Answers – Part 3

In the previous part, C++ Interview Questions and Answers Part 1 and Part 2, we have explained some basic questions of C++. This part is in continuation with the previous C++ Interview Questions and Answers tutorial. In this part of the tutorial we w

Char array is better than String for password prevention

Why Char array is better than String for storing secure data like Password in Java? As we know that String is immutable in Java if we store password as String, it will be available in memory (Heap) until Garbage collector clears it and since String

Create your own Ruby Gem

Hi friends, The popularity of Ruby on Rails now a days is so much because of its rapid development, which is possible because of its gems. For every generic functionality there is a gem available, so why not create our own gem. Today I am going to te

How to use Core Data in iOS Part 1?

Core Data framework is used to store data in the form of entities and maintained by Apple in a very well defined manner. Here is an example usage of Core Data to insert,delete,update and fetch data from entities with in the same. To use Core Data wit

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Difference between variable declaration globally and locally

During my project work I was working on a code in which I was getting segmentation fault on initialization of two variables of float data type whose dimensions where 1000 cross 1800 for both of them, but when I declared the variables globally program

How to Insert an Excel Table into Oracle Database

        Am trying to insert am excel table into oracle database and when i try i get issuesmy table to the database doesnt get formatted correct                      public

How to Create a Robots.txt File for Your Website

Definition of ROBOTS.TXT:   A Robots.txt file stops Search Engine crawlers from indexing those web pages which do not add any business value to your website. In other words, it instructs Search Engines bots how to exactly crawl and index your

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How to import/export data using CSV in PostgreSQL

To export a table data from Postgres database to a CSV file, use the "COPY to" command. You can create a CSV file using MS-Excel or directly create a file from the command. Syntax: COPY (SELECT * FROM table_name) to E'C:\Users\main\Documents\file.c

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