vault backup: 2023-09-05 15:36:43

Algo/Séminaire/Chapter 2 - Functions.md

@@ -81,7 +81,7 @@ _: int = 4 (*same things but with another method*)
 # let average(a,b) = (a+b)/2 ;;
 val average: int*int -> int = <fun>
 
-(*This method is not for several parameter, is just a one parameter wich is a couple*)
+(*This method is not for several parameter, is just a one parameter wich is a couple*) (*f(x,y) ≠ f x y*)
 
 (*The OCaml way (the way that it work) *)
 # let average a b = (a+b)/2;;
@@ -89,3 +89,4 @@ val average: int -> int -> int = <fun>
 # average (-2) (2);;
 -: int = 0
 ```
+

Algo/Séminaire/Chapter 3 - Case analysis.md

@@ -0,0 +1,18 @@
+## 3.1. The alternative 
+
+### The if structure
+```Ocaml
+if cond then expr1 else expr2
+```
+> ⚠️ `expr1` and `expr2` have to be the same type. `cond` is a `bool`
+
+**For exemple**
+```Ocaml
+# if 1<2 then "higher" else "lower" ;;
+-: string = "higher"
+
+# let abs(x) = 
+	if x>0 then x
+	else then x=x+(-x)+(-x) ;;;
+
+```