What operations are atomic in C#?

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For something more complete/detailed:

Reads and writes to 32-bit value types are atomic: This includes the following intrinsic value (struct) types: bool, char, byte, sbyte, short, ushort, int, uint, float. The following types (amongst others) are not guaranteed to be atomic: decimal, double, long, ulong.

e.g.

int x;
x = 10; // atomic
decimal d;

d = 10m; // not atomic

Reference assignment is also an atomic operation:

private String _text;
public void Method(String text)
{
  _text = text; // atomic
}

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