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Can't pickle when using multiprocessing Pool.map()
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@Rika: Yes. blocking, iterative, and async maps are available.
– Mike McKerns
May 5 at 12:37
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ExecuteReader requires an open and available Connection. The connection's current state is Connectin
... or throw it up the StackTrace
// we do not need a finally-block to close the connection since it will be closed implicitely in an using-statement
throw;
}
}
}
return promo;
}
...
What is the difference between a symbolic link and a hard link?
...to a new inode (which contains the metadata for the file and points to the blocks of data that contain its contents, i.e. the text "Hello, World!":
$ echo 'Hello, World!' > myfile.txt
Create a hard link my-hard-link to the file myfile.txt, which means "create a file that should point to the sam...
Pointers in Python?
...ptually (not necessarily in implementation), "a = 1" doesn't overwrite the block of memory named "a" with 1; it assigns a name "a" to the already-existing object "1", which is fundamentally different than what happens in C. That's why pointers as a concept can't exist in Python--they'd become stale...
LINQ Aggregate algorithm explained
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As a sidenote on the addendum, the whole block could easily be replaced by var csv = string.Join(",", chars) (no need of aggregate or stringbuilders) - but yeah, I know the point of the answer was to give example usage of aggregate so it's cool. But I still wanted t...
How to overlay one div over another div
...e .wrapper element
*/
#infoi {
position: relative;
display: inline-block;
top: -40px;
left: calc(100% - 52px);
/*
* Styling only, the below can be changed or removed
* depending on your use case
*/
height: 20px;
padding: 10px 10px;
}
<div class="navi"><...
IOException: read failed, socket might closed - Bluetooth on Android 4.3
...y longer. I have experienced a few issues still. Basically, this sometimes blocks and fails. Rebooting the SPP-Device (plug off / plug in) helps in such cases. Sometimes I also get another Pairing request after connect() even when the device is already bonded.
UPDATE:
here is a complete class, con...
How to sort in-place using the merge sort algorithm?
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@PaulStelian - Wiki has an article for block merge sort, which as you commented is stable. It works best if there are at least 2 · sqrt(n) unique values, which allows them to be re-ordered to provide working areas of an array and remain stable.
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Python: fastest way to create a list of n lists
... @beruic I'm just quoting the code from the question in the first code block, so it doesn't really make sense to change that.
– Sven Marnach
Oct 28 '19 at 15:53
add a comm...
Change the name of the :id parameter in Routing resources for Rails
...lso effectively use the :controller option with scope and additional scope blocks to take out some of the repetition.
EDIT (May 8, 2014): Make it more obvious the answer contains information for both Rails 3 & 4. Update the links to the code to go to exact line numbers and commits so that the...