DEV Community

loading...
Cover image for PipeExtensions 1.3.0 Update

PipeExtensions 1.3.0 Update

Winston Puckett
Better code is more better.
Updated on ・2 min read

4 weeks ago to the day, I announced version 1.0.0 of PipeExtensions. If you want to learn more about what or why it is, here is the original announcement.

The original version lacked a few features which are now available. Here's what you can expect.

Dyadic and triadic function support

F# allows a user to pass a tuple of 2 or 3 arguments for those rare cases when a monadic function is not the best way to describe what's going on. PipeExtensions now has that functionality.

Here's a contrived sample:

// Function with 2 parameters:
bool Validate(int id, string name)
  => id > 0 && name != "invalid";

var isValid = (1, "Charlie").Pipe(Validate);

// Function with 3 parameters:
bool Validate(int id, string name, short age)
  => id > 0 && name != "invalid" && age < 175;

var isValid = (1, "Charlie", 57).Pipe(Validate);
Enter fullscreen mode Exit fullscreen mode

Pass CancellationTokens regardless of parameter number.

Whether you're using a function with one, two, or three parameters, you can always add the CancellationToken to the right of the function.

// Function with 2 parameters and a CancellationToken:
async Task<bool> Validate(int id, string name, CancellationToken cancellationToken)
  => await Task.Run(() => id > 0 && name != "invalid", cancellationToken);

var isValid = await (1, "Charlie").PipeAsync(Validate, cancellationToken);

// Function with 3 parameters:
async Task<bool> Validate(int id, string name, short age, CancellationToken cancellationToken)
  => await Task.Run(() => id > 0 && name != "invalid" && age < 175, cancellationToken);

var isValid = await (1, "Charlie", 57).PipeAsync(Validate, cancellationToken);
Enter fullscreen mode Exit fullscreen mode

Why pass it on the right hand side? Because this is how Linq chooses to do things:

var example = await myList.FirstAsync(item => item.Id == 0, cancellationToken);
Enter fullscreen mode Exit fullscreen mode

Install PipeExtensions for yourself. Find the package on Nuget

Discussion (0)