Tryify.md

Tryify

Tyrify is a callback based utility class intended to reduce the required code to write TryXxx functions.

In the given use example Tyrify reduces the required lines of code from 13 lines to 5 lines. So, with Tryify you write approx. 61.5 % less code.

The only (and in 99% of all cases unimportant) disadvantage is that two additional function calls are required which could slightly reduce the performance.

Calling Interface of Tyrify

public bool TryInvoke(Func<T> callback, out T result, T fallback = default)

Example

Image you want allow the developer to work around the error handling and provide a TryXxxx function that returns true if everything is fine and false in all other cases.

Method to wrap

// this is the method you want to wrap in a try catch block
public string Download(string url)
{
   // here is the code to download the content of the url
}

Classic Approach

public bool TryDownload(string url, out string result)
{
    Try
    {
        result = Download(url);
        return true;
    }
    catch (Exception)
    {
       result = default;
       return false;
    }
}

Tryify Approach

public bool TryDownload(string url, out string result)
{
    return new Tryify<string>()
        .TryInvoke(() => Download(url), out result);
}