5 ms·

These all look great, especially tuple literals. I wonder why they chose to make tuples mutable though. Can anyone answer that question?

• louthy 10y ago
  They're not. The type ValueTuple is a value-type.
  • Pxtl 10y ago
    While value-types are recommended to be immutable, it is not mandatory.
  • jsmeaton 10y ago
    You're right, I missed that bit. How does that gel with the comment that they contain mutable fields? > Tuples are value types, and their elements are simply public, mutable fields
• zastrowm 10y ago
  From https://github.com/dotnet/roslyn/issues/347 https://github.com/dotnet/roslyn/issues/347 (Details > Mutability): > Should tuples be mutable or immutable? The nice thing about them being > structs is that the user can choose. If a reference to the tuple is > readonly then the tuple is readonly. > Now a local variable cannot be readonly, unless we adopt #115 (which is > likely), but that isn't too big of a deal, because locals are only used > locally, and so it is easier to stick to an immutable discipline if you > so choose. > If tuples are used as fields, then those fields can be readonly if > desired.