c# – irhadbabic.com

Web API global exception logger/handler (with Loggly)

July 7, 2017January 21, 2021 Irhad Babic 9 Comments

My last two posts (How to intercept all incoming requests with WebAPI, and How to store data per request with WebAPI) were actually components of this, a bit bigger, solution I was working on two days ago. Basically I had a need for intercepting and logging all of the unhandled exceptions. This is what I’ve […]

How to store data per request with WebAPI

July 5, 2017January 9, 2021 Irhad Babic Leave a comment

This is going to be a short one. If you need to store some data and make it available to methods the most logical place to me is HttpContext. More precisely HttpContext.Current.Items collection which should always be available during a request processing. If you are suffering from a sport lesion you may a need a […]

How to intercept all incoming requests with WebAPI

July 5, 2017August 3, 2017 Irhad Babic 2 Comments

As a part of a bigger task, I had to intercept all of the incoming client requests to our WebAPI controllers. I considered several options, like fiddling with HttpModule, or using the Application_BeginRequest method in Global.asax.cs, but settled for whole another one. Basically what I suggest you do is create a public class which inherits […]

Solution to the gcc error: undefined reference to `ilogb’ (C/C++)

March 17, 2016November 2, 2019 Irhad Babic 6 Comments

The ilogb( ) functions return the exponent of their floating-point argument as a signed integer. If the argument is not normalized, ilogb( ) returns the exponent of its normalized value. Here’s simple program that uses ilogb()

#include <math.h>

int main(int argc, char*argv[]){
    double x = 1234.5678;

   int retval = ilogb(x);
    return 0;
}

#include <math.h>

int main(int argc, char*argv[]){

double x = 1234.5678;

int retval = ilogb(x);

return 0;

}

Now, if You use this function and get the following gcc linker error: undefined reference to `ilogb’ […]

Random DateTime in the range (C#)

March 17, 2016March 17, 2016 Irhad Babic Leave a comment

So You need a random DateTime value in some range, and C# Random class does not provide Random.NextDateTime(from, to). Here’s a simple solution for this problem…

public static DateTime NextDateTime(this Random rnd, DateTime dateTimeFrom, DateTime dateTimeTo)
{
  //Calculate cumulative number of seconds between two DateTimes
  Int32 Days = (dateTimeTo – dateTimeFrom).Days * 60 * 60 *24;
  Int32 Hours = (dateTimeTo – dateTimeFrom).Hours * 60 * 60;
  Int32 Minutes = (dateTimeTo – dateTimeFrom).Minutes * 60;
  Int32 Seconds = (dateTimeTo – dateTimeFrom).Seconds;

  Int32 range = Days + Hours + Minutes + Seconds;

  //Add random number of seconds to dateTimeFrom
  Int32 NumberOfSecondsToAdd = rnd.Next(range);
  DateTime result = dateTimeFrom.AddSeconds(NumberOfSecondsToAdd);

  //Return the value
  return result;
}

public static DateTime NextDateTime(this Random rnd, DateTime dateTimeFrom, DateTime dateTimeTo)

{

//Calculate cumulative number of seconds between two DateTimes

Int32 Days = (dateTimeTo – dateTimeFrom).Days * 60 * 60 *24;

Int32 Hours = (dateTimeTo – dateTimeFrom).Hours * 60 * 60;

Int32 Minutes = (dateTimeTo – dateTimeFrom).Minutes * 60;

Int32 Seconds = (dateTimeTo – dateTimeFrom).Seconds;

Int32 range = Days + Hours + Minutes + Seconds;

//Add random number of seconds to dateTimeFrom

Int32 NumberOfSecondsToAdd = rnd.Next(range);

DateTime result = dateTimeFrom.AddSeconds(NumberOfSecondsToAdd);

//Return the value

return result;

}

As this method is written as an extension method to Random class, you’ll be able to use it just as a static Random class method (Random.NextDateTime(startDateTime, endDateTime). […]