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What's the difference between lists enclosed by square brackets and parentheses in Python?
...t;
TypeError: unhashable type: 'list'
Note that, as many people have pointed out, you can add tuples together. For example:
>>> x = (1,2)
>>> x += (3,)
>>> x
(1, 2, 3)
However, this does not mean tuples are mutable. In the example above, a new tuple is constructed b...
Find nearest value in numpy array
...y - value)).argmin()
return array[idx]
array = np.random.random(10)
print(array)
# [ 0.21069679 0.61290182 0.63425412 0.84635244 0.91599191 0.00213826
# 0.17104965 0.56874386 0.57319379 0.28719469]
value = 0.5
print(find_nearest(array, value))
# 0.568743859261
...
How to avoid having class data shared among instances?
... But why does this happens only for list? When i declared an integer or string outside the init, it was not shared among the objects? Can anyone share any doc link to this concept?
– Amal Ts
May 20 '15 at 6:03
...
Red black tree over avl tree
...ion and look-up in guaranteed O(logN) time. However, there are following points of comparison between the two:
AVL trees are more rigidly balanced and hence provide faster look-ups. Thus for a look-up intensive task use an AVL tree.
For an insert intensive tasks, use a Red-Black tree.
AVL trees st...
Likelihood of collision using most significant bits of a UUID in Java
...uts off the least significant bits, so there is a possibility that you run into a collision, right?
5 Answers
...
URL Encoding using C#
...tring columnHeader in mappings.Keys)
{
int columnWidth = columnHeader.Length + 1;
Func<TUnencoded, string> encoder = mappings[columnHeader];
string encodedString = encoder(unencodedObject);
// ASSU...
Difference between wait() and sleep()
...ot:
Object mon = ...;
synchronized (mon) {
mon.wait();
}
At this point the currently executing thread waits and releases the monitor. Another thread may do
synchronized (mon) { mon.notify(); }
(on the same mon object) and the first thread (assuming it is the only thread waiting on the mon...
Package objects
...it should be a part of - would have been slightly more proper language api interface.
– matanster
Oct 2 '15 at 16:22
...
How do I detect when someone shakes an iPhone?
...
In 3.0, there's now an easier way - hook into the new motion events.
The main trick is that you need to have some UIView (not UIViewController) that you want as firstResponder to receive the shake event messages. Here's the code that you can use in any UIView to g...
UIButton: how to center an image and a text using imageEdgeInsets and titleEdgeInsets?
...sistent stream of upvotes and the equally hackish answers below (no insult intended).
– Jesse Crossen
Oct 7 '14 at 18:36
5
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