add count to L

Author: radekosmulski

fastcore/foundation.py

@@ -189,6 +189,7 @@ def reduce(self, f, initial=None): return reduce(f, self) if initial is None els
     def sum(self): return self.reduce(operator.add, 0)
     def product(self): return self.reduce(operator.mul, 1)
     def setattrs(self, attr, val): [setattr(o,attr,val) for o in self]
+    def count(self): return len(self)
 
 # Cell
 add_docs(L,
@@ -220,7 +221,8 @@ def setattrs(self, attr, val): [setattr(o,attr,val) for o in self]
          reduce="Wrapper for `functools.reduce`",
          sum="Sum of the items",
          product="Product of the items",
-         setattrs="Call `setattr` on all items"
+         setattrs="Call `setattr` on all items",
+         count="Count of the items"
         )
 
 # Cell

nbs/02_foundation.ipynb

@@ -636,7 +636,8 @@
     "    def reduce(self, f, initial=None): return reduce(f, self) if initial is None else reduce(f, self, initial)\n",
     "    def sum(self): return self.reduce(operator.add, 0)\n",
     "    def product(self): return self.reduce(operator.mul, 1)\n",
-    "    def setattrs(self, attr, val): [setattr(o,attr,val) for o in self]"
+    "    def setattrs(self, attr, val): [setattr(o,attr,val) for o in self]\n",
+    "    def count(self): return len(self)"
    ]
   },
   {
@@ -675,7 +676,8 @@
     "         reduce=\"Wrapper for `functools.reduce`\",\n",
     "         sum=\"Sum of the items\",\n",
     "         product=\"Product of the items\",\n",
-    "         setattrs=\"Call `setattr` on all items\"\n",
+    "         setattrs=\"Call `setattr` on all items\",\n",
+    "         count=\"Count of the items\"\n",
     "        )"
    ]
   },