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Apollo GraphQL – Private (Authentication)/Public API using Schema Directives/Annotation

This is one of the most common use case where we need to disable authentication for APIs such as Login API (Generate Access Token). Basically we will have all our APIs hosted in single instance of Apollo GraphQL server (We did not use any of the middleware such as Express). There are number of ways to solve this problem.… Read More »

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3D Printers – ALL YOU NEED TO KNOW

          Electronic products are all around us. Printers are one such product that is used frequently in home, company, industry, etc. They are commercial product to make hard copies of documents, images and many more. A printer usually prints the content (2D content) on a paper. With the technological development we… Read More »

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Pointers in C Programming – Basics

DATA STRUCTURES IN C – LINKED LIST (20 PROGRAMS) Try DATA STRUCTURES IN C – LINKED LIST (20 PROGRAMS) Pointers in C Programming – Basics : Source Code : #include<stdio.h> int main() { int a=5; int *ptr; //Declaring a integer pointer variable which can point to a address of integer ptr=&a; //Pointer variable ptr will now… Read More »

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“Error Establishing a Database Connection” in WordPress After Changing WordPress Address and Site Address

            I installed WordPress in a VPS. In the General settings of the Dashboard, the WordPress Address and Site Address text box had the IP address of the server instead of the domain name. So I manually changed the IP address to the domain name after which I got an… Read More »

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Samsung Galaxy Grand – A Powerful Beast at Better Price

            Everyone wants to own a high end smartphones like Samsung Galaxy S3, iPhone, Xperia Ion which costs more than Rs 30,000($600). Is it really worth having such costly mobile for normal use? Instead you can go for Samsung Galaxy Grand,a dual sim phone which is priced Rs 21,500 in… Read More »

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