finally finished slice...

notes

@@ -214,4 +214,20 @@ slices
 
 reference to a contiguous sequence of elements
 
+enumerate returns a tuple with counter and reference to thing (counter, &thing)
 
+slice is a pointer to a string, with a length
+
+let s = String::from("a a a a");
+slice = &s[0..2];
+
+you can drop the first number if it's zero: let slice = &s[..2];
+or the last number if it's the end of the string: let slice = &s[4..];
+or both numbers to slice the whole thing: let slice = &s[..];
+
+you can not create a slice that starts or ends within multibyte unicode parts
+
+String: a heap allocated vector of bytes that is stored on the heap. It is potentially mutable.
+&str: an immutable borrowed string slice.
+
+let s = "string"; // string literal (it's a slice)