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How can I add items to an empty set in python
...', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f17511270%2fhow-can-i-add-items-to-an-empty-set-in-python%23new-answer', 'question_page');
}
);
Post as a guest
...
How to center text vertically with a large font-awesome icon?
...display: inline-flex; /* make element size relative to content */
align-items: center; /* vertical alignment of items */
line-height: 40px; /* vertically size by height, line-height or padding */
padding: 0px 10px; /* horizontal with padding-l/r */
border: 1px solid #ccc;
}
/* unnece...
Compare object instances for equality by their attributes
...able)):
return obj
if isinstance(obj, Iterable):
base_items = [base_typed(item) for item in obj]
return base_items if from_numpy else T(base_items)
d = obj if T is dict else obj.__dict__
return {k: base_typed(v) for k, v in d.items()}
def deep_equals(*args):
...
How can I list all collections in the MongoDB shell?
...
@Dan: I haven't used MongoDB in a while, but my best guess is that it's the size of the data stored in the collection vs. the total amount allocated to that collection (to handle minor updates and growth without having to constantly reallocate new space for the entire coll...
What's the best way to communicate between view controllers?
...ook at this tutorial.
Third, and perhaps most importantly, note that the "best practices" mentioned in the Stanford presentation are much easier to understand if you think about them in the context of the "dependency injection" design pattern. In a nutshell, this means that your controller shouldn'...
Slide right to left?
...
This is the best way if you have jQueryUI installed.
– steampowered
Nov 14 '12 at 15:39
5
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Is there any performance gain in indexing a boolean field?
... be negligible only makes sense if you are about 50% likely to come across items matching your search. Then, to find 100 matches, the DB needs to iterate 200 items. But if the items only match 1% of the time, it would need to iterate 10,000 items.
– mahemoff
Se...
How does a Breadth-First Search work when looking for Shortest Path?
...lus the length of the edge that you are exploring is less than the current best distance for the node in question. If you can improve the distance, set the new shortest path, and remember the predecessor through which that path has been acquired. When the BFS queue is empty, pick a node (in your exa...
Is there an IDictionary implementation that, on missing key, returns the default value instead of th
...d(key, value);
}
public void Add(KeyValuePair<TKey, TValue> item)
{
_dict.Add(item);
}
public void Clear()
{
_dict.Clear();
}
public bool Contains(KeyValuePair<TKey, TValue> item)
{
return _dict.Contains(item);
}
pub...
Why use ICollection and not IEnumerable or List on many-many/one-many relationships?
... used because the IEnumerable<T> interface provides no way of adding items, removing items, or otherwise modifying the collection.
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