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Mr. Roa

The name is Roa. Mr. Roa

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Mr. Roa turns 2 today!

I don’t tend to do this kind of short announcement posts but I thought this was worth sharing. I've been trying to blog seriously for »

Raúl Roa Raúl Roa on Mr. Roa, Birthday 18 July 2013

TIP/Trick: How to retrieve a sub-string between two delimiters using C++

The std::string structure exists as an alternative tothe NULL terminated char array commonly used in C. Such structure provides methods to do simple string management »

Raúl Roa Raúl Roa on TIPS, C++, string, sub-string 06 June 2013

TIP/Trick: How to count words in a text file using C++

Sometimes we may find ourselves handling data files that contain information whose data integrity needs to be checked or compared against rules related to byte size, »

Raúl Roa Raúl Roa on TIPS, C++, Text 30 May 2013

Highly divisible triangular number using primes

I found myself browsing through Project Euler Today during my free time. After reading a couple of problems I payed special attention to Problem #12. The »

Raúl Roa Raúl Roa on Triangular Numbers, Algorithm, Project Euler, Primes 21 May 2013

TIP/Trick: How to use the Paint.NET PSD Plugin to manipulate PSD files from your C# application

Last week I found myself needing to retrieve some information from a Photoshop Document (PSD) file. Since this goes beyond the standard support of the IO »

Raúl Roa Raúl Roa on TIPS, Paint.NET, PSD, C# 13 May 2013

ASP.NET: Custom LinkedIn OAuth Provider

The release of Visual Studio 2012 brought us a very nice feature. They added OAuth/OpenID support to the default Web Application templates. Now by just »

Raúl Roa Raúl Roa on ASP.NET, OAuth, LinkedIn 28 September 2012

TIP/Trick: How to split a string using C++

Say you are like me, you have a strong background as a high level language programmer. You enjoy the amenities provided by the strong and mature »

Raúl Roa Raúl Roa on TIPS, C++, string 06 July 2012

ASP.NET MVC & Charting

At some point in our career as Web developers we’ve been asked to add a visual representation of data, commonly known as charts. Charting is »

Raúl Roa Raúl Roa on ASP.NET, MVC, Charts 20 August 2010

TIP/Trick: Use DataPager control with ListView and Custom Data Source

Paging tabular data retrieved through a database query has been a long time need in transactional line of business applications. With time the ways of achieving »

Raúl Roa Raúl Roa on TIPS, ListView, DataPager 20 July 2010

How to use Membership/Role Provider and when to use custom implementations

Authentication is a must have feature for every system. Every system administrator needs to give an identity to the ones using their system. Which leads us, »

Raúl Roa Raúl Roa on ASP.NET, Provider Model, Membership 28 February 2010
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