Transition to using UnitJS's fun module

www/fun.js

@@ -1,64 +0,0 @@
-function Fun() {
-  return {
-    defaultCompare: defaultCompare,
-    insert: insert,
-    map: map,
-    mapFilter: mapFilter,
-    isSet: isSet,
-    of: of,
-    proj: proj
-  };
-
-  function insert(obj, t, compare, min, max) {
-    min = min == undefined ? 0 : min;
-    max = max == undefined ? t.length : max;
-    compare = compare == undefined ? defaultCompare : compare;
-    if(max - min < 1) {
-      return min;
-    }
-    var avg = Math.floor((max + min) / 2);
-    if (compare(obj, t[avg]) < 0) {
-      return insert(obj, t, compare, min, avg);
-    } else {
-      return insert(obj, t, compare, avg+1, max);
-    }
-  }
-
-  function defaultCompare(a, b) {
-    if(a < b) {
-      return -1;
-    } else if(a > b) {
-      return 1;
-    } else {
-      return 0;
-    }
-  }
-
-  function map(mapper, f) {
-    return function() {
-      var args = Array.prototype.map.call(arguments, mapper);
-      return f.apply(null, args);
-    }
-  }
-
-  function of(o) {
-    return function(key) {return o[key];};
-  }
-
-  function proj(key) {
-    return function(o) {return o[key];};
-  }
-
-  function mapFilter(mapper, predicate) {
-    return function(array) {
-      return array.reduce(function(accumulator, elem) {
-        var v = mapper(elem);
-        return predicate(v) ? accumulator.concat(v) : accumulator;
-      }, []);
-    };
-  }
-
-  function isSet(x) {
-    return x != undefined;
-  }
-}

www/index.html

@@ -6,7 +6,6 @@
     <script src="lib/unit.js"></script>
     <script src="translations.js"></script>
     <script src="i18n.js"></script>
-    <script src="fun.js"></script>
     <script src="screen.js"></script>
     <script src="save.js"></script>
     <script src="messaging.js"></script>

www/main.js

@@ -1,9 +1,9 @@
 window.addEventListener('load', function() {
   var dom = unitJS.Dom();
   var async = unitJS.Async();
+  var fun = unitJS.Fun();
   var translations = Translations();
   var i18n = I18n({translations: translations});
-  var fun = Fun();
   var save = Save();
   var screen = Screen({dom: dom, i18n: i18n});
   var messaging = Messaging({screen: screen});

www/screen/game.js

@@ -242,7 +242,7 @@ Screen.Game = function(modules) {
   function matchingInRiver(card) {
     return modules.fun.mapFilter(
       modules.fun.of(sets.river.card),
-      modules.fun.isSet
+      modules.fun.defined
     )(modules.hanafuda.sameMonth(card).map(modules.fun.proj('name')));
   }