Steven Giesel • 6/17/2023

C# 12: Collection literals

This article details the new 'collection literals' feature in C# 12, which introduces a terse syntax like [e1, e2, e3] for creating common collection values. It covers the spread operator (..) for inlining collections, planned support for dictionaries, and how custom collections can implement the feature via CollectionBuilder.

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#syntax #c #Dotnet