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Update SYNTAX.md

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Nicolas Abril 2022-09-23 13:04:34 +00:00 committed by GitHub
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@ -55,11 +55,11 @@ MyName = "Victor"
Creates a top-level definition called `MyName`, of type `String` and value `"Victor"`. And:
```
get_first (fst: String) (snd: String): String
get_first fst snd = fst
GetFirst (fst: String) (snd: String): String
GetFirst fst snd = fst
```
Creates a top-level function called `get_first`, which receives two arguments, `fst` and `snd` of type `String`, and returns a `String`, which is the first argument.
Creates a top-level function called `GetFirst`, which receives two arguments, `fst` and `snd` of type `String`, and returns a `String`, which is the first argument.
Every rule must pattern match on each argument and they may match on a specific type constructor or match everything on a variable. For example, given the type:
@ -624,7 +624,7 @@ In the same way that forall (aka Pi, aka the dependent function type) can be rea
```
ThereIsEvenNat : [x: Nat] (Equal (Nat.mod x Nat.two) Nat.zero)
0 ~ refl
$Nat.zero Equal.refl
```
Can be read as `there exists an (x: Nat) such that x mod 2 is equal to zero`. Sigmas can also be used to create subset types: