June 2018 Update

Task/Menu/00DESCRIPTION

@@ -16,4 +16,3 @@ For test purposes use the following four phrases in a list:
 
 ;Note:
 This task is fashioned after the action of the [http://www.softpanorama.org/Scripting/Shellorama/Control_structures/select_statements.shtml Bash select statement].
-<br><br>

Task/Menu/Julia/menu.julia

@@ -0,0 +1,28 @@
+function _menu(items)
+    for (ind, item) in enumerate(items)
+        @printf "  %2i) %s\n" ind item
+    end
+end
+
+_ok(::Any,::Any) = false
+function _ok(reply::AbstractString, itemcount)
+    n = tryparse(Int, reply)
+    return isnull(n) || 0 ≤ get(n) ≤ itemcount
+end
+
+"Prompt to select an item from the items"
+function _selector(items, prompt::AbstractString)
+    isempty(items) && return ""
+    reply = -1
+    itemcount = length(items)
+    while !_ok(reply, itemcount)
+        _menu(items)
+        print(prompt)
+        reply = strip(readline(STDIN))
+    end
+    return items[parse(Int, reply)]
+end
+
+items = ["fee fie", "huff and puff", "mirror mirror", "tick tock"]
+item = _selector(items, "Which is from the three pigs: ")
+println("You chose: ", item)

Task/Menu/Rust/menu.rust

@@ -0,0 +1,47 @@
+fn menu_select<'a>(items: &'a [&'a str]) -> &'a str {
+    if items.len() == 0 {
+        return "";
+    }
+
+    let stdin = std::io::stdin();
+    let mut buffer = String::new();
+
+    loop {
+        for (i, item) in items.iter().enumerate() {
+            println!("{}) {}", i + 1, item);
+        }
+        print!("Pick a number from 1 to {}: ", items.len());
+
+        // Read the user input:
+        stdin.read_line(&mut buffer).unwrap();
+        println!();
+
+        if let Ok(selected_index) = buffer.trim().parse::<usize>() {
+            if 0 < selected_index {
+                if let Some(selected_item) = items.get(selected_index - 1) {
+                    return selected_item;
+                }
+            }
+        }
+
+        // The buffer will contain the old input, so we need to clear it before we can reuse it.
+        buffer.clear();
+    }
+}
+
+fn main() {
+    // Empty list:
+    let selection = menu_select(&[]);
+    println!("No choice: {:?}", selection);
+
+    // List with items:
+    let items = [
+        "fee fie",
+        "huff and puff",
+        "mirror mirror",
+        "tick tock",
+    ];
+
+    let selection = menu_select(&items);
+    println!("You chose: {}", selection);
+}

Task/Menu/Scala/menu.scala

@@ -0,0 +1,28 @@
+import scala.util.Try
+
+object Menu extends App {
+  val choice = menu(list)
+
+  def menu(menuList: Seq[String]): String = {
+    if (menuList.isEmpty) "" else {
+      val n = menuList.size
+
+      def getChoice: Try[Int] = {
+        println("\n   M E N U\n")
+        menuList.zipWithIndex.map { case (text, index) => s"${index + 1}: $text" }.foreach(println(_))
+        print(s"\nEnter your choice 1 - $n : ")
+        Try {
+          io.StdIn.readInt()
+        }
+      }
+
+      menuList(Iterator.continually(getChoice)
+        .dropWhile(p => p.isFailure || !(1 to n).contains(p.get))
+        .next.get - 1)
+    }
+  }
+
+  def list = Seq("fee fie", "huff and puff", "mirror mirror", "tick tock")
+
+  println(s"\nYou chose : $choice")
+}