def members(self):
'''collect object members from incoming things'''
with self._context():
mfilter, call = self._mfilter, self._call
return self._xtend(ichain(imap(
lambda x: mfilter(call, x), self._iterable,
)))
def extract(self):
'''extract object members from incoming things'''
with self._context():
walk_ = self._extract
call_, alt_, wrap_ = self._call, self._alt, self._wrapper
return self._xtend(ichain(imap(
lambda x: walk_(call_, alt_, wrap_, x), self._iterable,
)))
def delay_map(self, wait):
"""
invoke call on each incoming thing after delay `wait`
@param wait: time in seconds
"""
with self._context():
dm, call = self._delay_map, self._call
return self._xtend(imap(lambda x: dm(x, wait, call), self._iterable))
def group(self):
'''
group incoming things, optionally using current call for key function
'''
call_, list_ = self._call, list
with self._context():
return self._xtend(imap(
lambda x: [x[0], list_(x[1])], groupby(self._iterable, call_)
))
def deepmembers(self):
'''collect object members from incoming things and their bases'''
_mf = self._mfilter
_mz = lambda x: _mf(self._call, x)
def _memfilters(thing, mz=_mz, gc=getcls, ci=ichain):
return ci(imap(mz, ci([getmro((gc(thing))), [thing]])))
with self._context():
return self._xtend(
ichain(imap(_memfilters, self._iterable))
)
def invoke(self, name):
"""
invoke method `name` on each incoming thing with passed arguments,
keywords but return incoming thing instead if method returns `None`
@param name: name of method
"""
with self._context():
invoke = self._invoke
return self._xtend(
imap(lambda x: invoke(x, caller=methodcaller(name, *self._args, **self._kw)), self._iterable)
)
def delay_invoke(self, name, wait):
"""
invoke method `name` on each incoming thing with passed arguments,
keywords after delay `wait` but return incoming thing instead if method
returns `None`
@param name: name of method
@param wait: time in seconds
"""
with self._context():
di, mc = self._delay_invoke, methodcaller
args, kw = self._args, self._kw
return self._xtend(imap(lambda x: di(x, wait, mc(name, *args, **kw)), self._iterable))
def any(self):
'''if `any` incoming things are `True`'''
with self._context():
return self._append(any(imap(self._call, self._iterable)))
def quantify(self):
'''how many times call is `True` for incoming things'''
with self._context():
return self._append(sum(imap(self._call, self._iterable)))
def copy(self):
"""copy each incoming thing"""
with self._context():
return self._xtend(imap(deepcopy, self._iterable))
def items(self):
"""invoke call on each mapping to get key, value pairs"""
with self._context():
return self._xtend(starmap(self._call, ichain(imap(items, self._iterable))))
def map(self):
"""invoke call on each incoming thing"""
with self._context():
return self._xtend(imap(self._call, self._iterable))
def _memfilters(thing, mz=_mz, gc=getcls, ci=ichain):
return ci(imap(mz, ci([getmro((gc(thing))), [thing]])))
