There's an application A, which accepts an userid and password to login. This validation is processed by System1. Now after password validation, the application generates an One Time Passcode(OTP) and sends it as a SMS/E-Mail to the user. And this has a 15-30 minutes of expiry. Only when the OT...

There's an application A, which accepts an userid and password to login. This validation is processed by System1. Now after password validation, the application generates an One Time Passcode(OTP) and sends it as a SMS/E-Mail to the user. OTP is validates by System2. And this has a 15-30 minutes...

I wrote this function to convert an array of bytes to a C/C++ string representation using hexadecimal escape codes (\xhh). Any suggestions are welcome: std::string toEscapedHexaString(const std::uint8_t * data, const int dataSizeBytes, const int maxCols = 80, con...

I want to see if I used the Observer pattern correctly. Right now I'm using a VolumeManager.cs that implements ISubject and a MusicVolume.cs that implements IObserver. I'm doing this to make it easy for me to change volume along a lot of different sounds and musics. My VolumeManager.cs is se...

So I have used phpmailer to send email to users upon registering to the site. Now, everything works as should, however, I find myself doing painstaking work adding the HTML elements in. Here's an example, I'll have a piece of HTML code; <p>This is a paragraph</p> <span>Now this is important!</span

The requirements for validating a national provider identifier can be found here. Here's my attempt at a T-SQL implementation: declare @npi nvarchar(max) = N'808401234567893'; -- NPI value is a 9 digit number followed by a single check digit that CAN have a prefix of 80840 when used as a card is...