大约有 7,000 项符合查询结果（耗时：0.0286秒） [XML]
What is the purpose and use of **kwargs?
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You can use **kwargs to let your functions take an arbitrary number of keyword arguments ("kwargs" means "keyword arguments"):
>>> def print_keyword_args(**kwargs):
... # kwargs is a dict of the keyword args passed to the function
... for key, value in kwargs.iteritems():
... ...
Why does NULL = NULL evaluate to false in SQL server
... caused me many errors. I do understand the IS NULL and IS NOT NULL keywords are the correct way to do it. But why does SQL server behave this way?
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A variable modified inside a while loop is not remembered
...s for your comment! This solution would result 6 lines containing a single word. OP's request was different...
– TrueY
Jan 20 '16 at 8:59
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What's is the difference between train, validation and test set, in neural networks?
...dict new data (which is not in the training set) with good error. In other words the network should be able to generalize the examples so that it learns the data and does not simply remembers or loads the training set by overfitting the training data.
The validation data set is a set of data for the...
Case-INsensitive Dictionary with string key-type in C#
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This works great. A word of caution though, if you change Any to SingleOrDefault you will not get null back if it doesn't exist, instead you will get a keyvaluepair with both key and value set to null!
– NibblyPig
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How many parameters are too many? [closed]
...er of parameters. Take this often used function:
HWND CreateWindowEx
(
DWORD dwExStyle,
LPCTSTR lpClassName,
LPCTSTR lpWindowName,
DWORD dwStyle,
int x,
int y,
int nWidth,
int nHeight,
HWND hWndParent,
HMENU hMenu,
HINSTANCE hInstance,
LPVOID lpParam
);
That's 12 parameter...
Interface vs Abstract Class (general OO)
...ay accelerate shows the contract nature. what is contract nature? why this word contract introduced whenever we talk about interface?
– overexchange
Nov 11 '14 at 18:44
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Is JavaScript an untyped language?
...o use "untyped" to describe a language whose formal specification uses the word "type" and says that it has seven types (Undefined, Null, Number, String, Boolean, Symbol, and Object) is really confusing. Most people do not want to distinguish this notion of type from the PLT def.
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UIView frame, bounds and center
...nds of the receiver are not clipped. The default value is
NO.
In other words, if a view's frame is (0, 0, 100, 100) and its subview is (90, 90, 30, 30), you will see only a part of that subview. The latter won't exceed the bounds of the parent view.
masksToBounds is equivalent to clipsToBounds....
c# open a new form then close the current form?
... describes their types, the types are not given (Someone please correct my wording if need be). // Overall its just a tricky way to not have to declare an entire function (event handler) outside of the current one that handles Form2.Closed event.
– KDecker
Mar ...