Functional style dictionary and list classes + decorators for pattern matching function dispatch
Project description
Overview
========
Functional style 'list' and 'dict' classes & decorators for pattern matching function dispatch.
For more information, visit http://www.systemical.com/doc/opensource/pyfnc
Examples
========
Dictionary class 'dic' with 'return self' functionality:
>>> d=dic({"k2":"v2"})
>>> dr=d.update({"k1":"v1"})
>>> self.assertEqual(d, dr)
List class 'liste' with 'return self' functionality and integrated 'map', 'reduce' and 'filter' functions:
>>> l=liste()
>>> lr=l.extend([1,2,3])
>>> self.assertEqual(len(l), 3)
>>> self.assertEqual(l, lr)
>>> f=lambda x:x+10
>>> lm=l.map(f)
>>> self.assertEqual(lm, [11, 12, 13])
>>> self.assertEqual(l, [11, 12, 13])
Erlang style function dispatch:
>>> @pattern('male', str)
... def greet_male(p1, p2):
... return "Hello M. %s!" % p2
>>> @pattern('female', str)
... def greet_female(p1, p2):
... return "Hello Mrs. %s!" % p2
>>> @patterned
... def greet(p1, p2):
... pass
>>> print greet("male", "Dupont")
"Hello M. Dupont!"
>>> print greet("female", "Corriveau")
"Hello Mrs. Corriveau!"
Clean looking reducers:
@pattern(False, any)
def comp_reducer_FA(p1, p2):
return False
@pattern(str, str)
def comp_reducer_SS(p1, p2):
if p1==p2:
return p1
return False
@patterned
def comp_reducer(p1, p2):
'''
Reducer
Check if all strings are equal
'''
def strings_comparator(l):
'''
Returns the common string if all elements of 'l' are equal
else returns False
'''
if len(l)<2:
return False
return reduce(comp_reducer, l)
Tests
=====
Tests can be performed using `nosetests` in the root directory.
========
Functional style 'list' and 'dict' classes & decorators for pattern matching function dispatch.
For more information, visit http://www.systemical.com/doc/opensource/pyfnc
Examples
========
Dictionary class 'dic' with 'return self' functionality:
>>> d=dic({"k2":"v2"})
>>> dr=d.update({"k1":"v1"})
>>> self.assertEqual(d, dr)
List class 'liste' with 'return self' functionality and integrated 'map', 'reduce' and 'filter' functions:
>>> l=liste()
>>> lr=l.extend([1,2,3])
>>> self.assertEqual(len(l), 3)
>>> self.assertEqual(l, lr)
>>> f=lambda x:x+10
>>> lm=l.map(f)
>>> self.assertEqual(lm, [11, 12, 13])
>>> self.assertEqual(l, [11, 12, 13])
Erlang style function dispatch:
>>> @pattern('male', str)
... def greet_male(p1, p2):
... return "Hello M. %s!" % p2
>>> @pattern('female', str)
... def greet_female(p1, p2):
... return "Hello Mrs. %s!" % p2
>>> @patterned
... def greet(p1, p2):
... pass
>>> print greet("male", "Dupont")
"Hello M. Dupont!"
>>> print greet("female", "Corriveau")
"Hello Mrs. Corriveau!"
Clean looking reducers:
@pattern(False, any)
def comp_reducer_FA(p1, p2):
return False
@pattern(str, str)
def comp_reducer_SS(p1, p2):
if p1==p2:
return p1
return False
@patterned
def comp_reducer(p1, p2):
'''
Reducer
Check if all strings are equal
'''
def strings_comparator(l):
'''
Returns the common string if all elements of 'l' are equal
else returns False
'''
if len(l)<2:
return False
return reduce(comp_reducer, l)
Tests
=====
Tests can be performed using `nosetests` in the root directory.
Project details
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