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CSharp · Console

/Program.cs

using System;
using ErrorOr;
					
ErrorOr<float> Divide(int a, int b)
{
    if (b == 0)
    {
        return Error.Unexpected(description: "Cannot divide by zero");
    }

    return a / b;
}

var result = Divide(4, 2);

if (result.IsError)
{
    Console.WriteLine(result.FirstError.Description);
    return;
}

Console.WriteLine(result.Value * 2); // 4

result = Divide(4, 0);

if (result.IsError)
{
    Console.WriteLine(result.FirstError.Description);
    return;
}

Console.WriteLine(result.Value * 2); // error