Ticket #221: rowgetter.2.patch

doc/rst/MochiKit/Base.rst

@@ -1277 +1277 @@
-        Available in MochiKit 1.3.1+
-
-
+:mochidef:`rowgetter(names)`:
+
+    Returns a ``function(obj)`` that returns ``[obj[name1], obj[name2], ..., obj[nameN]]``
+    where ``names`` is the array ``[name1, name2, ..., nameN]``
+
+    *Availability*:
+        Available in MochiKit 1.4+
+
+
-:mochidef:`serializeJSON(anObject)`:
-
-    Serialize ``anObject`` in the JSON [1]_ format, see `JSON

MochiKit/Base.js

@@ -323 +323 @@
-        };
-    },
-
+    /** @id MochiKit.Base.rowgetter */
+    rowgetter: function (funcs) {
+        return function(arg) {
+            return map(function (f) { return arg[f]; }, funcs);
+        };
+    },
+
-    /** @id MochiKit.Base.typeMatcher */
-    typeMatcher: function (/* typ */) {
-        var types = {};
@@ -1226 +1233 @@
-    "operator",
-    "forwardCall",
-    "itemgetter",
+    "rowgetter",
-    "typeMatcher",
-    "isCallable",
-    "isUndefined",

tests/test_Base.js

@@ -499 +499 @@
-
-    t.is( queryString([["foo", "bar"], ["baz", "wibble"]]), "foo=baz&bar=wibble" );
-
+    /* test itemgetter */
+    var o = {a: 1, b: 2, c: 4, d: -1};
+    t.is( itemgetter('c')(o), 4, "itemgetter, item exists" );
+    t.is( itemgetter('x')(o), undefined, "itemgetter, item doesn't exist" );
+
+    /* test rowgetter */
+    var o = {a: 1, b: 2, c: 4, d: -1};
+    t.is( repr(rowgetter(['a', 'c', 'd'])(o)), repr([1, 4, -1]), "rowgetter" );
+    t.is( repr(rowgetter(['a', 'x', 'd'])(o)), repr([1, undefined, -1]), "rowgetter, nonexistent item" );
+
-};