update tuples example

Author: HajagosNorbert

examples/Tuples/README.md

@@ -5,8 +5,8 @@ For example, instead of having `foo.name` to access the `name` field of a record
 you might write `foo.0` to access the first field in a tuple (or `foo.1` for the second
 field, etc.)
 
-
 ## Code
+
 ```roc
 file:main.roc
 ```
@@ -17,8 +17,9 @@ Run this from the directory that has `main.roc` in it:
 
 ```
 $ roc main.roc
-First is: A String,
+First is: Just a String,
 Second is: true,
-Third is: 15000000.
+Third is: 15000000.0.
+
 You also have some pears.
 ```

examples/Tuples/main.roc

@@ -1,37 +1,38 @@
-app [main!] { pf: platform "https://github.com/roc-lang/basic-cli/releases/download/0.20.0/X73hGh05nNTkDHU06FHC0YfFaQB1pimX7gncRcao5mU.tar.br" }
-
-import pf.Stdout
-import pf.Arg exposing [Arg]
-
-main! : List Arg => Result {} _
-main! = |_args|
-
-    # a tuple that contains three different types
-    simple_tuple : (Str, Bool, I64)
-    simple_tuple = ("A String", Bool.true, 15_000_000)
-
-    # access the items in a tuple by index (starts at 0)
-    first_item = simple_tuple.0
-    second_item = if simple_tuple.1 then "true" else "false"
-    third_item = Num.to_str(simple_tuple.2)
-
-    Stdout.line!(
-        """
-        First is: ${first_item},
-        Second is: ${second_item},
-        Third is: ${third_item}.
-        """,
-    )?
-
-    # You can also use tuples with `when`:
-    fruit_selection : [Apple, Pear, Banana]
-    fruit_selection = Pear
-
-    quantity = 12
-
-    when (fruit_selection, quantity) is
-        # TODO re-enable when github.com/roc-lang/roc/issues/5530 is fixed.
-        # (_, qty) if qty == 0 -> Stdout.line! "You have no fruit."
-        (Apple, _) -> Stdout.line!("You also have some apples.")
-        (Pear, _) -> Stdout.line!("You also have some pears.")
-        (Banana, _) -> Stdout.line!("You also have some bananas.")
+main! : List(Str) => Try({}, _)
+main! = |_args| {
+
+  # A tuple that contains three different types
+  simple_tuple : (Str, Bool, Dec)
+  simple_tuple = ("Just a String", True, 15_000_000)
+
+
+  # Access the items in a tuple by index (starts at 0)
+  first_item = simple_tuple.0
+  second_item = if simple_tuple.1 "true" else "false"
+  third_item = simple_tuple.2.to_str()
+
+  echo!(
+      \\First is: ${first_item},
+      \\Second is: ${second_item},
+      \\Third is: ${third_item}.
+      \\
+  )
+
+  # You can also use tuples with `match`:
+  fruit_selection : [Apple, Pear, Banana]
+  fruit_selection = Pear
+
+  quantity = 12
+
+  # Create a tuple of fruites and quantities,
+  # So you can match on both of them
+  match (fruit_selection, quantity) {
+      (_, 0) => echo!("You have no fruit.")
+      (Apple, 1) => echo!("You have an apple.")
+      (Apple, _) => echo!("You also have some apples.")
+      (Pear, _) => echo!("You also have some pears.")
+      (Banana, _) => echo!("You also have some bananas.")
+  }
+
+  Ok({})
+}