juvix/tests/negative/DuplicateInductiveParameterName.juvix

module DuplicateInductiveParameterName;

type T (A : Type) (B : Type) (A : Type) := c : T A B A;

end;
Check all the type parameter names are different when declaring an inductive type (#1377) * Fix #1334 * Rename error type 2022-07-15 11:58:49 +03:00			`module DuplicateInductiveParameterName;`

Change syntax for ind. data types and forbid the empty data type (#1684) Closes #1644 #1635 2023-01-03 15:49:04 +03:00			`type T (A : Type) (B : Type) (A : Type) := c : T A B A;`
Check all the type parameter names are different when declaring an inductive type (#1377) * Fix #1334 * Rename error type 2022-07-15 11:58:49 +03:00
Named arguments (#2250) - closes #1991 This pr implements named arguments as described in #1991. It does not yet implement optional arguments, which should be added in a later pr as they are not required for record syntax. # Syntax Overview Named arguments are a convenient mehcanism to provide arguments, where we give the arguments by name instead of by position. Anything with a type signature can have named arguments, i.e. functions, types, constructors and axioms. For instance, if we have (note that named arguments can also appear on the rhs of the `:`): ``` fun : {A B : Type} (f : A -> B) : (x : A) -> B := ... ; ``` With the traditional positional application, we would write ``` fun suc zero ``` With named arguments we can write the following: 1. `fun (f := suc) (x := zero)`. 2. We can change the order: `fun (x := zero) (f := suc)`. 3. We can group the arguments: `fun (x := zero; f := suc)`. 4. We can partially apply functions with named arguments: `fun (f := suc) zero`. 5. We can provide implicit arguments analogously (with braces): `fun {A := Nat; B := Nat} (f := suc; x := zero)`. 6. We can skip implicit arguments: `fun {B := Nat} (f := suc; x := zero)`. What we cannot do: 1. Skip explicit arguments. E.g. `fun (x := zero)`. 2. Mix explicit and implicit arguments in the same group. E.g. `fun (A := Nat; f := suc)` 3. Provide explicit and implicit arguments in different order. E.g. `fun (f := suc; x := zero) {A := Nat}`. 2023-07-18 12:32:34 +03:00			`end;`