Updated docs with blockless & anonymous functions, added variable mutation disclaimer, updated landing page pascaligo example.

gitlab-pages/docs/language-basics/functions.md

@@ -36,7 +36,9 @@ Here's how you define a basic function that accepts two `ints` and returns a sin
 
 ```pascaligo
 function add(const a: int; const b: int): int is 
-    block { skip } with a + b
+    begin
+        const result: int = a + b;
+    end with result;
 ```
 
 The function body consists of two parts:
@@ -44,9 +46,14 @@ The function body consists of two parts:
 - `block {<code>}` - logic of the function
 - `with <value>` - the return value of the function
 
-> 💡 `skip` can be used as a placeholder for empty function blocks, when all the neccessary logic fits into `with` at the end. It is also possible to omit `block { skip } with`
-in the above example, leaving only `a + b`.
+#### Blockless functions
 
+Functions that can contain all of their logic into a single instruction/expression, can be defined without the surrounding `block`.
+Instead, you can inline the necessary logic directly, like this:
+
+```pascaligo
+function add(const a: int; const b: int): int is a + b
+```
 
 <!--Cameligo-->
 
@@ -65,3 +72,25 @@ value.
 
 <!--END_DOCUSAURUS_CODE_TABS-->
 
+<!--DOCUSAURUS_CODE_TABS-->
+<!--Pascaligo-->
+```pascaligo
+const increment : (int -> int) = (function (const i : int) : int is i + 1);
+// a = 2
+const a: int = increment(1);
+```
+<!--END_DOCUSAURUS_CODE_TABS-->
+
+## Anonymous functions
+
+Functions without a name, also known as anonymous functions are useful in cases when you want to pass the function as an argument or assign it to a key in a record/map.
+
+Here's how to define an anonymous function assigned to a variable `increment`, with it's appropriate function type signature.
+<!--DOCUSAURUS_CODE_TABS-->
+<!--Pascaligo-->
+```pascaligo
+const increment : (int -> int) = (function (const i : int) : int is i + 1);
+// a = 2
+const a: int = increment(1);
+```
+<!--END_DOCUSAURUS_CODE_TABS-->

gitlab-pages/docs/language-basics/src/functions/add.ligo

@@ -0,0 +1,4 @@
+function add(const a: int; const b: int): int is 
+    begin
+        const result: int = a + b;
+    end with result;

gitlab-pages/docs/language-basics/src/functions/anon.ligo

@@ -0,0 +1,3 @@
+const increment : (int -> int) = (function (const i : int) : int is i + 1);
+// a = 2
+const a: int = increment(1);

gitlab-pages/docs/language-basics/src/functions/blockless.ligo

@@ -0,0 +1 @@
+function add(const a: int; const b: int): int is a + b

gitlab-pages/docs/language-basics/variables-and-constants.md

@@ -43,6 +43,9 @@ Variables, unlike constants, are mutable. They can't be used in a *global scope*
 
 > 💡 Don't worry if you don't understand the function syntax yet. We'll get to it in upcoming sections of the docs.
 
+> ⚠️ Please be wary that mutation only works within the function scope itself, values outside of the function scope will not be affected.
+
+
 
 ```pascaligo
 // won't work, use const for global values instead

gitlab-pages/website/pages/en/index.js

@@ -18,55 +18,25 @@ const GridBlock = CompLibrary.GridBlock;
 const pre = "```";
 
 const pascaligoExampleSmall = `${pre}pascaligo
-// variant defining pseudo multi-entrypoint 
-// actions
-type action is
-| Increment of int
-| Decrement of int
-
-function add 
-  (const a: int; const b: int): int is 
-  block { skip } with a + b
-
-function subtract 
-  (const a: int; const b: int): int 
-  is block { skip } with a - b
-
-// real entrypoint that re-routes the flow 
-// based on the action provided
-function main 
-  (const p: action; const s: int): 
-  (list(operation) * int) is
- block { skip } 
-  with ((nil : list(operation)),
-    case p of
-    | Increment(n) -> add(s, n)
-    | Decrement(n) -> subtract(s, n)
-  end)
-${pre}`;
-
-const pascaligoExample = `${pre}pascaligo
 // variant defining pseudo multi-entrypoint actions
 type action is
 | Increment of int
 | Decrement of int
 
-function add (const a : int ; const b : int) : int is
- block { skip } with a + b
+function add (const a : int ; const b : int) : int is a + b
 
-function subtract (const a : int ; const b : int) : int is
- block { skip } with a - b
+function subtract (const a : int ; const b : int) : int is a - b
 
-// real entrypoint that re-routes the flow based 
-// on the action provided
-function main (const p : action ; const s : int) : 
-  (list(operation) * int) is
- block { skip } with ((nil : list(operation)),
+// real entrypoint that re-routes the flow based on the action provided
+function main (const p : action ; const s : int) : (list(operation) * int) is 
+  ((nil : list(operation)),
     case p of
-  | Increment(n) -> add(s, n)
-  | Decrement(n) -> subtract(s, n)
+    | Increment (n) -> add (s, n)
+    | Decrement (n) -> subtract (s, n)
     end)
 ${pre}`;
+
+const pascaligoExample = pascaligoExampleSmall;
 const cameligoExampleSmall = `${pre}ocaml
 type storage = int
 

src/test/contracts/website2.ligo

@@ -3,15 +3,13 @@ type action is
 | Increment of int
 | Decrement of int
 
-function add (const a : int ; const b : int) : int is
-    block { skip } with a + b
+function add (const a : int ; const b : int) : int is a + b
 
-function subtract (const a : int ; const b : int) : int is
-    block { skip } with a - b
+function subtract (const a : int ; const b : int) : int is a - b
 
 // real entrypoint that re-routes the flow based on the action provided
 function main (const p : action ; const s : int) : (list(operation) * int) is 
-  block {skip} with ((nil : list(operation)),
+  ((nil : list(operation)),
     case p of
     | Increment (n) -> add (s, n)
     | Decrement (n) -> subtract (s, n)