C# Version 7.2

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C# Version 7.2





Released November, 2017

C# 7.2 added several small language features:

⮚Initializers on stackalloc arrays.
⮚Use fixed statements with any type that supports a pattern.
⮚Access fixed fields without pinning.
⮚Reassign ref local variables.
⮚Declare readonly struct types, to indicate that a struct is immutable and should be passed as an in parameter to its member methods.
⮚Add the in modifier on parameters, to specify that an argument is passed by reference but not modified by the called method.
⮚Use the ref readonly modifier on method returns, to indicate that a method returns its value by reference but doesn't allow writes to that object.
⮚Declare ref struct types, to indicate that a struct type accesses managed memory directly and must always be stack allocated.
⮚Use additional generic constraints.
⮚Non-trailing named arguments
⮚Named arguments can be followed by positional arguments.

⮚Leading underscores in numeric literals
⮚Numeric literals can now have leading underscores before any printed digits.

⮚private protected access modifier
⮚The private protected access modifier enables access for derived classes in the same assembly.

⮚Conditional ref expressions
⮚The result of a conditional expression (?:) can now be a reference.

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