[Code] Validation for Credit Card Numbers

I’m so excited.I’m starting a new series of post with this post.In titled as “Enterprise Code” posts commonly consist of code snippets. You can find detail for Luhn Algoritm.This Algorithm use validation of credit card number.I know that created by IBM.Link from paypal to test account numbers.In below you can see extention method for this validation. …

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Understanding identity map pattern

Hi everyone, In this post,i will try to explain identity map pattern. The most basic definition of identity map pattern is “Ensures that each object gets loaded only once by keeping every loaded object in a map. Looks up objects using the map when referring to them.” via Martin Fowler . This pattern is Data access …

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