Are User-Defined Literals Necessary in C#?

A Step Toward Meaningful Values Conclusion Giving meaning directly to values is a natural evolution of C#. C# has been moving in this direction for years. This article proposes User-Defined Literals (UDL) as a natural continuation of that evolution. The Current Limitation var duration = 123; We don't know: seconds?\ milliseconds? No meaning. Current Solution 123.Milliseconds() Meaning depends on API. The Core Problem Values themselves have no meaning. Proposal var duration = 123_ms; Now: Type is known\ Meaning is known Meaning is embedded in the value. Why This Is Natural C# has already evolved: foreach (pattern-based)\ await (pattern-based)\ using (pattern-based) Language privileges have been opened. See also:\ 👉 (https://dev.to/shimodateakira/why-c-keeps-opening-its-syntax-and-why-it-matters-3l7f) Common Misconception Literal = compile-time constant Not true. var s = quot;{DateTime.Now}"; Literal is syntax, not evaluation timing. Summary APIs attach meaning later\ Literals carry meanin