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plurals

PO
primarykey
Id
16322815
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
1
CommunityOwnedDate
CreationDate
2013-05-01T17:04:40.267
FavoriteCount
0
LastActivityDate
2013-05-01T18:27:45.673
LastEditDate
2013-05-01T18:27:45.673
LastEditorUserId
497208
OwnerUserId
497208
ParentId
16320990
PostTypeId
2
Score
1
ViewCount
0
LastEditorDisplayName
text
Body
The code: <pre><code>class Curried(object): def __init__(self, func, args=None, kwargs=None): self._func = func self._args = () if args is None else args[:] self._kwargs = {} if kwargs is None else dict(kwargs) self._name = None def __call__(self, *args, **kwargs): if args or kwargs: return Curried(self._func, self._args + args, dict(self._kwargs.items() + kwargs.items())) else: return self._func(*self._args, **self._kwargs) def __str__(self): if self._name is None: self._name = self._get_curried_name() return self._name def _get_curried_name(self): _args = ([str(a) for a in self._args] + ['{}={}'.format(k, v) for k, v in self._kwargs.iteritems()]) all_args = ", ".join(_args) return '<curried {}({}) at 0x{:x}>'.format( self._func.func_name, all_args, id(self)) def curry(func): _curried = Curried(func) return _curried </code></pre> Test: <pre><code>@curry def f(a, b, c, flag_foo=True, flag_bar=False): return 'horray!' print f print f(1, 2, flag_bar=True) print f(1, 2, flag_bar=True)(3, flag_foo=False) print f(1, 2, flag_bar=True)(3, flag_foo=False)() </code></pre> And the result: <pre><code><curried f() at 0x100484210> <curried f(1, 2, flag_bar=True) at 0x100484250> <curried f(1, 2, 3, flag_bar=True, flag_foo=False) at 0x100484310> horray! </code></pre> Instead of a "pure" function, here you get a callable class that acts as a function. You evaluate the name only once. Of course, if you want <code>func_name</code> you can add such variable as <a href="http://docs.python.org/2/library/functions.html#property" rel="nofollow"><code>property</code></a> and return <code>str(self)</code> which is evaluated once
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Title
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POIs there any way to lazy evaluate function.func_name?
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PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USJakub M.
UserOwnerUserId
1. USJakub M.
plurals
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1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
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1. POIs there any way to lazy evaluate function.func_name?
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1. This table or related slice is empty.
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1. VO
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2. VO
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CommentsPostId
1. COYup, `__call__` is the only way to perform this. `_kwags` looks like a typo. Thanks!
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 USzhangyoufu

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