Data commit

Task/Currying/Python/currying-1.py

@@ -0,0 +1,4 @@
+ def addN(n):
+     def adder(x):
+         return x + n
+     return adder

Task/Currying/Python/currying-2.py

@@ -0,0 +1,5 @@
+ >>> add2 = addN(2)
+ >>> add2
+ <function adder at 0x009F1E30>
+ >>> add2(7)
+ 9

Task/Currying/Python/currying-3.py

@@ -0,0 +1,10 @@
+>>> from functools import partial
+>>> from operator import add
+>>> add2 = partial(add, 2)
+>>> add2
+functools.partial(<built-in function add>, 2)
+>>> add2(7)
+9
+>>> double = partial(map, lambda x: x*2)
+>>> print(*double(range(5)))
+0 2 4 6 8

Task/Currying/Python/currying-4.py

@@ -0,0 +1,13 @@
+>>> from toolz import curry
+>>> import operator
+>>> add = curry(operator.add)
+>>> add2 = add(2)
+>>> add2
+<built-in function add>
+>>> add2(7)
+9
+>>> # Toolz also has pre-curried versions of most HOFs from builtins, stdlib, and toolz
+>>>from toolz.curried import map
+>>> double = map(lambda x: x*2)
+>>> print(*double(range(5)))
+0 2 4 6 8

Task/Currying/Python/currying-5.py

@@ -0,0 +1,54 @@
+# AUTOMATIC CURRYING AND UNCURRYING OF EXISTING FUNCTIONS
+
+
+# curry :: ((a, b) -> c) -> a -> b -> c
+def curry(f):
+    return lambda a: lambda b: f(a, b)
+
+
+# uncurry :: (a -> b -> c) -> ((a, b) -> c)
+def uncurry(f):
+    return lambda x, y: f(x)(y)
+
+
+# EXAMPLES --------------------------------------
+
+# A plain uncurried function with 2 arguments,
+
+# justifyLeft :: Int -> String -> String
+def justifyLeft(n, s):
+    return (s + (n * ' '))[:n]
+
+
+# and a similar, but manually curried, function.
+
+# justifyRight :: Int -> String -> String
+def justifyRight(n):
+    return lambda s: (
+        ((n * ' ') + s)[-n:]
+    )
+
+
+# CURRYING and UNCURRYING at run-time:
+
+def main():
+    for s in [
+        'Manually curried using a lambda:',
+        '\n'.join(map(
+            justifyRight(5),
+            ['1', '9', '10', '99', '100', '1000']
+        )),
+
+        '\nAutomatically uncurried:',
+        uncurry(justifyRight)(5, '10000'),
+
+        '\nAutomatically curried',
+        '\n'.join(map(
+            curry(justifyLeft)(10),
+            ['1', '9', '10', '99', '100', '1000']
+        ))
+    ]:
+        print (s)
+
+
+main()