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Ganaraj Tejasvi
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Ganaraj's posts

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React-Native DrawerLayoutAndroid - How to Open the Menu on Click of an Menu Icon
Recently had a chance to develop an app using the react native. On of my requirement for the app was a hamburgur menu. While the  DrawerLayoutAndroid available does the job, to a great extend, had a requirement to open the menu on click of the Home Menu/Ham...

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Google API Getting OAUTH2 Access Token (Part 1 Create Project and Get Access Token)
This post is aimed at exploring the Google API access through an access token. In order to do so one needs to get the access token and the steps to do so is detailed below. Step 1: Register An App in Google developer Console Reference :  https://developers....

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Angular Tab Slider Directive
This is continuation to the Slider Directive (Angularjs Directive for an Animated Highlight Slider) . Refer this git for full source code. Usage :  Directive : animated-tabs Directive attributes : duration : duration for sliding (should match with the trans...

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Angularjs Directive for an Animated Highlight Slider
Recently I had to work on angularjs and one of the component that had to be reproduced was a slider to slide across to the selected element. This is an attempt to write out the same. Any suggestion for improvements is welcome. The objective is to transition...

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Partial Form Validation With Spring/Hibernate Validator (Using the Validated Annotation)
Use Case: The default behavior of the @Valid annotation in a spring controller is to validate all the annotation. This works well when we need to validate all the input received from the form. This is true for most of the cases. But there can arise a scenar...

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3DES Encryption of a Credit Card Pin Using ASNI 9.8 Format 01 Pin Block Using Java
The first step in encrypting the card pin is to generate the Pin block using the card Number and and pin. This method of encryption is also referred by the following names: ECI 4 ISO 9564-1 - Format 0 The format combines the the Customer PIN and account num...

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File Copy over SSL
This is a continuation of my blog on  Transfer Files Between two Systems Over User Defined Ports . Felt the need to use SSL for the transfer. This is the first step in securing the transfer. As long as we ensure that the certificate on the server is not ava...

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ISO8583 BitMap Explained To be Used with JPOS
The Bitmap in the message provides information on the presence of other fields in the message. While using jpos, one does not have to populate it, as this gets populated based on the fields added automatically. Refer this wiki for more details. The BitMap i...

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Transfer Files Between two Systems Over User Defined Ports
This is a continuation of my post for sending multiple files over a socket connection . Spent some time over the same to explore the possibility of connecting two systems over a port of the users choice. The output code is a command line code, involving a S...
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