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A different way to do calculations, helpful when dealing with Dyscalculia.
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Typed Math

Sometimes when working with calculations I tend to get a touch of Dyscalculia. That is why I loved Visual Basic in the 90s. It had descriptive code, and does still have it. But I prefer to work with C#. Though I do miss some functions from time to time. To avoid visits from the ghost of Dyscalculia I created this project. At first it seemed like a pretty meaningless project, but soon I realised this could be useful. So, I made it a NuGet. It's all extensions to number types.

LinQ is great and it does offer a lot of ways to make the code more readable, if you use LinQ I see no reason why you should need this package.

Instead of writing

var x = 10 * 32 + y;

you can write

var x = 10.MultipliedWith(32).Add(y);

The package contains namespaces for the most common data types in Visual Studio.

To use the extensions, use any of the namespaces

using MarcusMedinaPro.TypedMath.ByteExtension; // Bytes
using MarcusMedinaPro.TypedMath.CharExtension; // Char
using MarcusMedinaPro.TypedMath.DecimalExtension; // Decimal
using MarcusMedinaPro.TypedMath.DoubleExtension; // Double
using MarcusMedinaPro.TypedMath.IntExtension; // Int
using MarcusMedinaPro.TypedMath.LongExtension; // Long
using MarcusMedinaPro.TypedMath.SByteExtension; // SByte
using MarcusMedinaPro.TypedMath.ShortExtension; // Short
using MarcusMedinaPro.TypedMath.UintExtension; // Uint
using MarcusMedinaPro.TypedMath.UlongExtension; //Ulong
using MarcusMedinaPro.TypedMath.UshorttExtension; //Ushort

Most of the functions have automatic casting from one to another, so you can work with mixed doubles and floats and ints if you want.


This project is nothing magical most of the functions are one-liners. The idea is not to create special functions, but to make the code easier to read. If you're a hardcore coder that love to minimize your code, this is not for you. But if you feel like you want code that will be easy to read, this might help.


  • 10190603 - Added array handlers
  • 20190524 - Added Percent, Highest, Lowest, Swap
  • 20190526 - Renamed ChoseHighestValue/ChoseLowestValue to ChoseHighestValueOf/ChoseLowestValueOf. Added SetHighestValueOf/SetLowestValueOf. Swap uses reference now
  • 20190529 - Corrected misspelling in Subtract and added Obsolete tag to the misspelled method. Renamed ChoseHighest/Lowest to ChooseIfHigher/ChooseIfLower


Here is the list of functions available for most of the types. In this example I'm using double

using MarcusMedinaPro.TypedMath.DoubleExtension; // Double

Compares the current double to a value of almost any type. Greater than and Less than works fine, but I don't recommend using IsEqual between different types of numbers like ints and doubles. That is just silly.

    // bool GreaterThan(...);
    int x = 10;
    double y = 15.2;
    if (y.GreaterThan(x))
        // Do something

    // bool LessThan(...);
    if (y.LessThan(x))
        // Do something

Compare if the numbers are equal or not (this can be tricky when using decimals though)

    // bool IsEqual(...);
    int x = 10;
    double y = 15.2;
    if (x.IsEqualTo(y))
        // Do something

    // bool IsNotEqual(...);
    if (x.IsNotEqualTo(y))
        // Do something

You could go wild and crazy and write

    if (!x.IsNotEqualTo(y))
        // Do something if x is not not equal to y
        // or rather Do something if x is equal to y

But that would make the code look weird.

Check if the value is positive or negative

    // bool IsNegative();

    double y=-2;
    if (y.IsNegative())
        // Do something

    // bool IsPositive();
    if (y.IsPositive())
        // Do something

Add and Subtract can also be done in typed form.

    // double Add(...);
    double y = 12;
    int x=14;
    var res = y.Add(x);

    // double Subtract(...);
    res = y.Subtract(x);

Divide, Multiply and Modulus are also available

    // double DividedBy(...);
    int x = 10;
    double y = 12;
    var res = y.DividedBy(x);

    // double MultipliedWith(...);
    res = y.MultipliedWith(x);

    // double Modulus(...);
    res = y.Modulus(x);

Cast to another type if you don't like using var x=(int)myDouble;

    double y = 13.37;
// byte CastDoubleToByte();
    var b = y.CastDoubleToByte();

// char CastDoubleToChar();
    var c = y.CastDoubleToChar();

// decimal CastDoubleToDecimal();
    var d = y.CastDoubleToDecimal();

// int CastDoubleToInt();
    var i = y.CastDoubleToInt();

// long CastDoubleToLong(...);
    var l = y.CastDoubleToLong();

// sbyte CastDoubleToSbyte(...);
    var sb = y.CastDoubleToSbyte();

// short CastDoubleToShort(...);
    var sh = y.CastDoubleToShort();

// uint CastDoubleToUint(...);
    var ui = y.CastDoubleToUint();

// ulong CastDoubleToUlong(...);
    var ul = y.CastDoubleToLong();

// ushort CastDoubleToUshort(...);
    var usr = y.CastDoubleToUshort();

You can also do bitwise operations And, Or, Xor, Not, Shift left and Shift right on the types that works with those operations (Int, short, sbyte etc)

    var test1 = 10.And(2);
    var test2 = 12.Or(2);
    var test3 = 14.Xor(2);
    var test4 = 16.Not();
    var test5 = 42.ShiftLeft(1);
    var test6 = 24.ShiftRight(1);

You can get the percent, add and Subtract percent from a value.

    var money = 1500.5;
    var x = 15.2.PercentOf(money);

    money = money.AddPercent(20); // same as money += 20.PercentOf(money);
    money = money.SubtractPercent(20); // same as money -= 20.PercentOf(money);

Choose highest or lowest number. It's a as simple as it sounds.

    var value1 = 50;
    var value2 = 32;

    var x = value1.ChooseIfHigher(value2);
    var y = value2.ChooseIfLower(value1);

Swap values if you'd ever need it.

    var x = 10;
    var y = 20;
    y.SwapWith(ref x); 
	// x == 20, Y == 10;

Choose highest or lowest number and set the variable. It's a as simple as it sounds.

    var x = 0;
    var y = 0;
    var value1 = 50;
    var value2 = 32;

    x.SetHighestValueOf(value1, value2);
    y.SetLowestValueOf(value1, value2);

Another nifty function is to be able to check if the current number is a prime number.

    var x = 5.IsPrime();

New features added

This time I decided to simplify common array functions. Some of them are directly links to LinQ methods, but with a hopefully more descriptive name :)

      All you need is an array with numbers
      var arr = new double[] { 10,42,20.13,91.4,30,1,3,11,29,46};

If you don't want to use LinQ you can use this alternative

      var average = arr.GetAverage();

If you don't like using [0] or array[array.Length - 1] to get the first value and last value, or use array [(array.Length - 1) / 2] to get the value int the middle, you can use this alternatives. Though, in LinQ you can just use arr.Last() and with C#8 you can use arr[^1]

        var first = arr.GetFirstValue();
        var last = arr.GetLastValue(); 
        var middle = arr.GetMiddleValue();

Once again, if you don't want to use LinQ to get highest and lowest value, you can use this more readable alternative

        var highest = arr.GetHighestValue();
        var lowest = arr.GetLowestValue();

To filter out values higher/lower of given number without LinQ, use

        var higherThan = arr.GetValuesHigherThan(10);
        var lowerThan = arr.GetValuesLowerThan(10);

Sometimes you need to resize an array, this might help

        var newArrSize = arr.SetNewArraySize(150);

If you need to sort your array and don't want to use LinQ, use this

        var sortAscending = arr.SortArrayAsc();
        var sortDescending= arr.SortArrayDesc();

If you need to sum the array and don't want to use LinQ, use this

        var sum = arr.SumAllValues();

OK I admit it, I wrote this code for fun. It moves all values in the array from left to right and vice versa.

        var left = arr.RotateLeft();
        var right = arr.RotateRight();

If you by any reason need to convert the array from whatever numbers to int, and don't want Linq, use this.

        var ints = arr.ConvertArrayToInt();

If you need to increase all values in the array with a specific value, this is the one for you

        var plusVal = arr.IncreaseAllValuesWith(10);
        var minusVal = arr.DecreaseAllValuesWith(12);

And finally some quirky code to get the first or last half of the array, or if you need all the numbers in the middle.

        var firsthalf = arr.GetFirstHalf();
        var MiddleValues = arr.GetMiddle();
        var lastHalf = arr.GetLastHalf();

Source code

You can find the code at


The NuGet is available at


Feel free to add, suggest or request a feature. If you want to help develop this NuGet, feel free to send a Pull Request.

Borrowed code

Borrowed Icons

Cheers. Marcus

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