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Which one will execute faster, if (flag==0) or if (0==flag)?
... built-in in the language. That is, it is available even without a single #include directive. For simplicity's sake, it usually amounts to int, char, bool and the like. All the other types are said to be user-defined, that is they exist because they are the result of some user declaring them: typede...
how can you easily check if access is denied for a file in .NET?
...e — they can change at any time. Thanks to Murphy's Law this especially includes the brief period between when you check the file and when you try to open it. A change is even more likely if you're in an area where you know you need to check first. Yet strangely enough it will never happen in y...
What is REST? Slightly confused [closed]
...eless. It is represented via some media type. Some examples of media types include XML, JSON, and RDF. Resources are manipulated by components. Components request and manipulate resources via a standard uniform interface. In the case of HTTP, this interface consists of standard HTTP ops e.g. GET, PU...
What columns generally make good indexes?
... be regularly used to extract data from the table should be indexed.
This includes:
foreign keys -
select * from tblOrder where status_id=:v_outstanding
descriptive fields -
select * from tblCust where Surname like "O'Brian%"
The columns do not need to be unique. In fact you can get really...
Reset/remove CSS styles for element only
...of the cascade.
This can be useful for the root element of a "widget" included in a
page, which does not wish to inherit the styles of the outer page.
Note, however, that any "default" style applied to that element (such
as, e.g. display: block from the UA style sheet on block elements su...
How does the algorithm to color the song list in iTunes 11 work? [closed]
...his implementation of an algorithm that approximates the one in iTunes. It includes a sample implementation in Objective-C.
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When should an IllegalArgumentException be thrown?
... want as many to succeed as possible even though some data are malformed. Includes programmatic errors too, if my application failing means a transaction won't go through that's probably better, if it means nuclear cooling goes offline that's bad.
– djechlin
M...
Convert pandas dataframe to NumPy array
...taFrame.values functions to get the Numpy representation of the dataframe, including the index:
In [8]: df
Out[8]:
A B C
0 -0.982726 0.150726 0.691625
1 0.617297 -0.471879 0.505547
2 0.417123 -1.356803 -1.013499
3 -0.166363 -0.957758 1.178659
4 -0.164103 0.074516 -...
[SOLVED] Can't send payload > 23bytes(MTU setted to 128bytes) - #9 by ...
...0 characters is that the BLE data packet size defaults to approx 32 bytes, including it's own header & footer. So yes, a good way to work with that is to send your text via several packets. You can, depending on the receiving device, increase the MTU (Maximum Transmission Unit), up to a maximum of 2...
Check whether a path is valid in Python without creating a file at the path's target
I have a path (including directory and file name).
I need to test if the file-name is a valid, e.g. if the file-system will allow me to create a file with such a name.
The file-name has some unicode characters in it.
...