C# Language Specification

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The C# Language Specification is the Standard ECMA-334 C# Language Specification. This International Standard specifies the form and establishes the interpretation of programs written in the C# programming language. This is the hyperlinked version.

C# Language Specification:
Standard ECMA-334
C# Language Specification

1. Scope
2. Conformance
3. Normative references
4. Definitions
5. Notational conventions
6. Acronyms and abbreviations
7. General description
8. Language overview
9. Lexical structure
10. Basic concepts
11. Types
12. Variables
13. Conversions
14. Expressions
15. Statements
16. Classes
17. Classes
18. Structs



19. Arrays
20. Interfaces
21. Enums
22. Delegates
23. Exceptions
24. Generics
25. Iterators
26. Unsafe code
Annexes (Appendices)

The C# Language Specification specifies:

  • The representation of C# programs;
  • The syntax and constraints of the C# language;
  • The semantic rules for interpreting C# programs;
  • The restrictions and limits imposed by a conforming implementation of C#.

This International Standard does not specify:

  • The mechanism by which C# programs are transformed for use by a data-processing system;
  • The mechanism by which C# applications are invoked for use by a data-processing system;
  • The mechanism by which input data are transformed for use by a C# application;
  • The mechanism by which output data are transformed after being produced by a C# application;
  • The size or complexity of a program and its data that will exceed the capacity of any specific data-processing system or the capacity of a particular processor;
  • All minimal requirements of a data-processing system that is capable of supporting a conforming implementation.
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