This short post will kick off a series covering some of the new features in C#.
One small but much requested feature is the ability to use any kind of collection for params. Previously you had to pass in an array:
public void MyMethod(int firstParam, params string[] otherParams)
{
foreach (var param in otherParams)
{
Console.WriteLine(param);
}
}
But now you can pass in any kind of collection,
public void MyMethod(int firstParam, params List<string> otherParams)
{
foreach (var param in otherParams)
{
Console.WriteLine(param);
}
}
This can save a great deal of fussing, converting your collection to an array and back.
Please note that this is a preview feature. Fortunately, Intellisense will convert your project for you. When you put this in you’ll get the dreaded red squiggly. Click on the light bulb and let it convert your project. Hey! Presto! it works.
We’ll look at a few bigger features in coming blog posts.
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It’s great to see C# finally embracing the flexibility to use any collection with params, which should save developers significant boilerplate when handling variable argument lists. I appreciate the tip about the preview feature and Intellisense auto-conversion—those red squiggles can be intimidating, but it sounds like the workflow is much smoother than expected. Looking forward to the next part to see what other modern features are coming next!
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The ability to use any collection type directly in the `params` keyword is a huge time-saver that eliminates so much unnecessary boilerplate code for array conversions. Kudos to you for breaking down this preview feature so clearly, especially with those helpful Intelliense tips for handling the red squiggly lines.
Refreshing to see how the new ‘params for any collection’ feature is finally streamlining what used to be such a tedious conversion process. I particularly appreciate the note about the preview nature of this feature; the auto-conversion via IntelliSense will definitely speed up adoption without forcing immediate manual refactors. Looking forward to seeing the other major updates in the next part of the series.
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