def test_replace_true():
new_val_fn = lambda n: n**2
cmp = lambda n: n % 2 == 0
seq = (1, 2, 3, 4)
new_seq = utils.replace_true(new_val_fn, cmp, seq)
assert new_seq == (1, 4, 3, 16)
def move_dot(old_world, new_world, dot_id, path, speed): # TODO: Set travel speed while moving. Or something. Have to handle it, since we pass it to the browser, too.
assert isinstance(path, collections.Iterable)
assert len(path[0]) == 2
#import pdb; pdb.set_trace()
return attr_update(
new_world,
entities = lambda entities: utils.replace_true(
new_val_fn = lambda dot: attr_update(dot, path=path),
cmp = lambda dot: dot.id == dot_id,
seq = entities
)
)
