cells.cell.ListCell

Package cells :: Module cell :: Class ListCell

Class ListCell
source code

object --+        
         |        
      Cell --+    
             |    
     InputCell --+
                 |
                ListCell

A input cell whose value is initialized to []. An ordinary InputCell doesn't act like we'd like it to in this case:

>>> import cells
>>> class A(cells.Model):
...     x = cells.makecell(value=[])
...     @cells.fun2cell()
...     def xlen(self, prev):
...         return len(self.x)
... 
>>> a = A()
>>> a.x
[]

>>> a.xlen
0

>>> a.x.append("foo")
>>> a.x
['foo']

>>> a.xlen
0

But if we specify a ListCell, it should work as we expect it:

>>> import cells
>>> class A(cells.Model):
...     x = cells.makecell(value=[])
...     @cells.fun2cell()
...     def xlen(self, prev):
...         return len(self.x)
... 
>>> a = A()
>>> a.x
[]

>>> a.xlen
0

>>> a.x.append("foo")
>>> a.x
['foo']

>>> a.xlen
1

Note that unchanged_if acts on list elements rather than the entire value.

Instance Methods	[hide private]

__init__(self, owner, name=None, rule=None, value=None, unchanged_if=None)
Initializes an DictCell object.

_onchanges(self)

_pregets(self)

_should_defer(self, name, argtuple)

count(self, v)

index(self, v, start=None, stop=None)

__getitem__(self, k)

__iter__(self)

__len__(self)

pop(self, index=None)
Warning: ListCell.pop() does not act quite like you may expect it in certain circumstances.

_make_listfun(name)

append(self, *args, **kwargs)

extend(self, *args, **kwargs)

insert(self, *args, **kwargs)

remove(self, *args, **kwargs)

reverse(self, *args, **kwargs)

sort(self, *args, **kwargs)

__add__(self, *args, **kwargs)

__iadd__(self, *args, **kwargs)

__mul__(self, *args, **kwargs)

__rmul__(self, *args, **kwargs)

__imul__(self, *args, **kwargs)

__setitem__(self, *args, **kwargs)

__delitem__(self, *args, **kwargs)

Inherited from InputCell: run

Inherited from Cell: add_called_by, add_calls, called_by_list, calls_list, changed, getvalue, propogate, propogation_list, remove_called_bys, remove_cb, reset_calls, set, updatecell

Inherited from object: __delattr__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __str__

Class Variables	[hide private]

Inherited from object: __class__

Instance Variables	[hide private]

Inherited from Cell: called_by, calls, synapse_space

Method Details	[hide private]

Class ListCell source code

__init__(self, owner, name=None, rule=None, value=None, unchanged_if=None) (Constructor)

_onchanges(self)

_pregets(self)

_should_defer(self, name, argtuple)

count(self, v)

index(self, v, start=None, stop=None)

__getitem__(self, k) (Indexing operator)

__iter__(self)

__len__(self) (Length operator)

pop(self, index=None)

_make_listfun(name)

append(self, *args, **kwargs)

extend(self, *args, **kwargs)

insert(self, *args, **kwargs)

remove(self, *args, **kwargs)

reverse(self, *args, **kwargs)

sort(self, *args, **kwargs)

__add__(self, *args, **kwargs) (Addition operator)

__iadd__(self, *args, **kwargs)

__mul__(self, *args, **kwargs)

__rmul__(self, *args, **kwargs)

__imul__(self, *args, **kwargs)

__setitem__(self, *args, **kwargs) (Index assignment operator)

__delitem__(self, *args, **kwargs) (Index deletion operator)

Class ListCell
source code

init(self, owner, name=None, rule=None, value=None, unchanged_if=None)
(Constructor)

getitem(self, k)
(Indexing operator)

iter(self)

len(self)
(Length operator)

add(self, *args, **kwargs)
(Addition operator)

iadd(self, *args, **kwargs)

mul(self, *args, **kwargs)

rmul(self, *args, **kwargs)

imul(self, *args, **kwargs)

setitem(self, *args, **kwargs)
(Index assignment operator)

delitem(self, *args, **kwargs)
(Index deletion operator)