mirror of
https://github.com/SpaceVim/SpaceVim.git
synced 2025-02-03 20:40:04 +08:00
114 lines
1.8 KiB
Python
Vendored
114 lines
1.8 KiB
Python
Vendored
# -----------------
|
|
# lambdas
|
|
# -----------------
|
|
a = lambda: 3
|
|
#? int()
|
|
a()
|
|
|
|
x = []
|
|
a = lambda x: x
|
|
#? int()
|
|
a(0)
|
|
|
|
#? float()
|
|
(lambda x: x)(3.0)
|
|
|
|
arg_l = lambda x, y: y, x
|
|
#? float()
|
|
arg_l[0]('', 1.0)
|
|
#? list()
|
|
arg_l[1]
|
|
|
|
arg_l = lambda x, y: (y, x)
|
|
args = 1,""
|
|
result = arg_l(*args)
|
|
#? tuple()
|
|
result
|
|
#? str()
|
|
result[0]
|
|
#? int()
|
|
result[1]
|
|
|
|
def with_lambda(callable_lambda, *args, **kwargs):
|
|
return callable_lambda(1, *args, **kwargs)
|
|
|
|
#? int()
|
|
with_lambda(arg_l, 1.0)[1]
|
|
#? float()
|
|
with_lambda(arg_l, 1.0)[0]
|
|
#? float()
|
|
with_lambda(arg_l, y=1.0)[0]
|
|
#? int()
|
|
with_lambda(lambda x: x)
|
|
#? float()
|
|
with_lambda(lambda x, y: y, y=1.0)
|
|
|
|
arg_func = lambda *args, **kwargs: (args[0], kwargs['a'])
|
|
#? int()
|
|
arg_func(1, 2, a='', b=10)[0]
|
|
#? list()
|
|
arg_func(1, 2, a=[], b=10)[1]
|
|
|
|
# magic method
|
|
a = lambda: 3
|
|
#? ['__closure__']
|
|
a.__closure__
|
|
|
|
class C():
|
|
def __init__(self, foo=1.0):
|
|
self.a = lambda: 1
|
|
self.foo = foo
|
|
|
|
def ret(self):
|
|
return lambda: self.foo
|
|
|
|
def with_param(self):
|
|
return lambda x: x + self.a()
|
|
|
|
lambd = lambda self: self.foo
|
|
|
|
#? int()
|
|
C().a()
|
|
|
|
#? str()
|
|
C('foo').ret()()
|
|
|
|
index = C().with_param()(1)
|
|
#? float()
|
|
['', 1, 1.0][index]
|
|
|
|
#? float()
|
|
C().lambd()
|
|
#? int()
|
|
C(1).lambd()
|
|
|
|
|
|
def xy(param):
|
|
def ret(a, b):
|
|
return a + b
|
|
|
|
return lambda b: ret(param, b)
|
|
|
|
#? int()
|
|
xy(1)(2)
|
|
|
|
# -----------------
|
|
# lambda param (#379)
|
|
# -----------------
|
|
class Test(object):
|
|
def __init__(self, pred=lambda a, b: a):
|
|
self.a = 1
|
|
#? int()
|
|
self.a
|
|
#? float()
|
|
pred(1.0, 2)
|
|
|
|
# -----------------
|
|
# test_nocond in grammar (happens in list comprehensions with `if`)
|
|
# -----------------
|
|
# Doesn't need to do anything yet. It should just not raise an error. These
|
|
# nocond lambdas make no sense at all.
|
|
|
|
#? int()
|
|
[a for a in [1,2] if lambda: 3][0]
|