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How do I make a textbox that only accepts numbers?
...the specification. I've looked at the MaskedTextBox control but I'd like a more general solution that could work with perhaps a regular expression, or depend on the values of other controls.
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Why do x86-64 systems have only a 48 bit virtual address space?
...f 256 terabyte. That's a lot. You're not going to see a system which needs more than that any time soon.
So CPU manufacturers took a shortcut. They use an instruction set which allows a full 64-bit address space, but current CPUs just only use the lower 48 bits. The alternative was wasting transist...
What character to use to put an item at the end of an alphabetic list?
...04 - Nautilus
The hashtag # is the last character. But if you want some more compatibility with other file managers I would use ZZ.
Something more elegant than "z_item"?
I guess this depends on your own concept of elegance and I think StackOverflow should diffuse best and safest practices, not ...
How to run function in AngularJS controller on document ready?
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What are dictionary view objects?
...ct changes
>>> del dishes['eggs']
>>> keys # No eggs anymore!
dict_keys(['sausage', 'bacon', 'spam'])
>>> values # No eggs value (2) anymore!
dict_values([1, 1, 500])
(The Python 2 equivalent uses dishes.viewkeys() and dishes.viewvalues().)
This example shows the dy...
Casting vs using the 'as' keyword in the CLR
... right solution. That throws an exception immediately, which means that no more work is done under incorrect assumptions, and the exception correctly shows the type of bug.
// This will throw an exception if randomObject is non-null and
// refers to an object of an incompatible type. The cast is
//...
Multiprocessing: How to use Pool.map on a function defined in a class?
...n spawns a process for each work item. The solution of "klaus se" below is more efficient.
– ypnos
Jul 12 '13 at 14:38
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Save classifier to disk in scikit-learn
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You can also use joblib.dump and joblib.load which is much more efficient at handling numerical arrays than the default python pickler.
Joblib is included in scikit-learn:
>>> import joblib
>>> from sklearn.datasets import load_digits
>>> from sklearn.lin...
How to explain Katana and OWIN in simple words and uses?
...h intends to remove System.Web out of the way, and allow you to use IIS on more "cleaner" way, without any unnecessary libraries or modules. Helios is now in pre-release version, and is waiting for more community feedback in order to make it fully supported Microsoft product.
Hope this explanation ...
Unique BooleanField value in Django?
... I tried editing to remove the need for try/except and to make the process more efficient but it was rejected.. Instead of get()ing the Character object and then save()ing it again, you just need to filter and update, which produces just one SQL query and helps keep the DB consistent: if self.is_the...