def do_while(self, condition):
"""Repeats source as long as condition holds emulating a do while loop.
Keyword arguments:
condition -- {Function} The condition which determines if the source
will be repeated.
Returns an observable {Observable} sequence which is repeated as long
as the condition holds.
"""
return Observable.concat([self, Observable.while_do(condition, self)])
def for_in(values, result_mapper) -> ObservableBase:
"""Concatenates the observable sequences obtained by running the
specified result mapper for each element in source.
Keyword arguments:
values -- A list of values to turn into an observable
sequence.
result_mapper -- A function to apply to each item in the
values list to turn it into an observable sequence.
Returns an observable sequence from the concatenated
observable sequences.
"""
return Observable.concat(Iterable.for_each(values, result_mapper))
def repeat(self, repeat_count=None):
"""Repeats the observable sequence a specified number of times. If the
repeat count is not specified, the sequence repeats indefinitely.
1 - repeated = source.repeat()
2 - repeated = source.repeat(42)
Keyword arguments:
repeat_count -- Number of times to repeat the sequence. If not
provided, repeats the sequence indefinitely.
Returns the observable sequence producing the elements of the given
sequence repeatedly."""
return Observable.concat(Enumerable.repeat(self, repeat_count))
def repeat(self, repeat_count=None):
"""Repeats the observable sequence a specified number of times. If the
repeat count is not specified, the sequence repeats indefinitely.
1 - repeated = source.repeat()
2 - repeated = source.repeat(42)
Keyword arguments:
repeat_count -- Number of times to repeat the sequence. If not
provided, repeats the sequence indefinitely.
Returns the observable sequence producing the elements of the given
sequence repeatedly."""
return Observable.concat(Enumerable.repeat(self, repeat_count))
def while_do(cls, condition, source):
"""Repeats source as long as condition holds emulating a while loop.
Keyword arguments:
:param types.FunctionType condition: The condition which determines if the
source will be repeated.
:param Observable source: The observable sequence that will be run if the
condition function returns true.
:returns: An observable sequence which is repeated as long as the condition
holds.
:rtype: Observable
"""
source = Observable.from_future(source)
return Observable.concat(Enumerable.while_do(condition, source))
def concat(self, *args):
"""Concatenates all the observable sequences. This takes in either an
array or variable arguments to concatenate.
1 - concatenated = xs.concat(ys, zs)
2 - concatenated = xs.concat([ys, zs])
Returns an observable sequence that contains the elements of each given
sequence, in sequential order.
"""
if isinstance(args[0], list):
items = args[0]
else:
items = list(args)
items.insert(0, self)
return Observable.concat(items)
def concat(self, *args):
"""Concatenates all the observable sequences. This takes in either an
array or variable arguments to concatenate.
1 - concatenated = xs.concat(ys, zs)
2 - concatenated = xs.concat([ys, zs])
Returns an observable sequence that contains the elements of each given
sequence, in sequential order.
"""
if isinstance(args[0], list):
items = args[0]
else:
items = list(args)
items.insert(0, self)
return Observable.concat(items)
def while_do(cls, condition, source):
"""Repeats source as long as condition holds emulating a while loop.
Arguments:
condition (types.FunctionType): The condition which determines if the
source will be repeated.
source (Observable): The observable sequence that will be run if the
condition function returns True.
Returns:
(Observable): An observable sequence which is repeated as long as the
condition holds.
"""
source = Observable.from_future(source)
return Observable.concat(Enumerable.while_do(condition, source))
def start_with(self, *args, **kw):
"""Prepends a sequence of values to an observable sequence with an
optional scheduler and an argument list of values to prepend.
1 - source.start_with(1, 2, 3)
2 - source.start_with(Scheduler.timeout, 1, 2, 3)
Returns the source sequence prepended with the specified values.
"""
if isinstance(args[0], Scheduler):
scheduler = args[0]
args = args[1:]
else:
scheduler = kw.get("scheduler", immediate_scheduler)
sequence = [Observable.from_(args, scheduler), self]
return Observable.concat(sequence)