Dates in month, return a list of the dates

Author: linkel

Week-2-Intro-to-SML/NestedFunctions-notes.md

@@ -0,0 +1,14 @@
+## Making functions private
+
+You do it by declaring the function in the let part of the function that will use it! 
+
+Where can you use a local function f1 defined inside another function?
+
+In later bindings of the let expression or the body of the let expression. 
+
+In the countup_from function he showed, he stuck the count function inside of it and then removed the redundant variable for "to", since the "x" in the outer function would be the same as it. 
+
+## When to use nested functions?
+
+Use 'em when you want them to be private! If they're likely to be misused or changed. 
+

Week-2-Intro-to-SML/assignment1KL.sml

@@ -24,3 +24,12 @@ fun number_in_months (dates: (int*int*int) list, months: int list) =
     then 0
     else number_in_month(dates, hd months) + number_in_months(dates, tl months)
 
+fun dates_in_month (dates: (int*int*int) list, month: int) =
+    if null dates
+    then []
+    else if (#2(hd(dates))) = month
+    then hd(dates) :: dates_in_month(tl dates, month)
+    else dates_in_month(tl dates, month)
+		       
+	     
+