Support list 'count' function #43

src/main/resources/META-INF/resources/grooscript.js

@@ -1342,6 +1342,24 @@
         this.splice(0, this.length)
     };
 
+    Array.prototype.count = function(value) {
+        var i, result = 0;
+        if (typeof value === "function") {
+            for (i = 0; i < this.length; i++) {
+                if (gs.bool(value(this[i]))) {
+                    result++;
+                }
+            }
+        } else {
+            for (i = 0; i < this.length; i++) {
+                if (gs.equals(value, this[i])) {
+                    result++;
+                }
+            }
+        }
+        return result;
+    };
+
     /////////////////////////////////////////////////////////////////
     //list - [] from groovy
     /////////////////////////////////////////////////////////////////

src/test/groovy/org/grooscript/convert/TestContributors.groovy

@@ -34,6 +34,7 @@ class TestContributors extends Specification {
         'contribution/MrHakiCategories'         | _
         'contribution/MrHakiTraits1'            | _
         'contribution/MrHakiTraits2'            | _
+        'contribution/MrHakiCountList'          | _
     }
 
     def 'test alex anderson' () {

src/test/resources/contribution/MrHakiCountList.groovy

@@ -0,0 +1,15 @@
+package contribution
+
+def list = [0, 1, 2, 1, 1, 3, 2, 0, 1]
+
+assert 9 == list.size()
+assert 2 == list.count(0)
+assert 4 == list.count(1)
+assert 2 == list.count(2)
+assert 1 == list.count(3)
+
+def listItems = ['Groovy', 'Grails', 'Java']
+assert listItems.count { it.startsWith('G') } == 2
+
+def numbers = [1, 2, 3, 4]
+assert numbers.count { it > 2 } == 2