Add tasks for all the new languages

Task/First-class-environments/Sidef/first-class-environments.sidef

@@ -0,0 +1,25 @@
+func calculator({.is_one}   ) { 1 }
+func calculator(n {.is_even}) { n / 2 }
+func calculator(n           ) { 3*n + 1 }
+
+func succ(this {_{:value}.is_one}, _) {
+    return this
+}
+
+func succ(this, get_next) {
+    this{:value} = get_next(this{:value})
+    this{:count}++
+    return this
+}
+
+var enviornments = (1..12 -> map {|i| Hash(value => i, count => 0) });
+
+while (!enviornments.map{ _{:value} }.all { .is_one }) {
+    say enviornments.map {|h| "%4s" % h{:value} }.join;
+    enviornments.range.each { |i|
+        enviornments[i] = succ(enviornments[i], calculator);
+    }
+}
+
+say 'Counts';
+say enviornments.map{ |h| "%4s" % h{:count} }.join;