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Bulk insert with SQLAlchemy ORM
...h sqlachemy 1.0.11 and it still makes 3 insert statements. But it is a lot faster than normal orm operations.
– zidarsk8
Oct 7 '16 at 21:12
3
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Finding what branch a Git commit came from
...the --no-ff option to git merge to force merge commit creation even in the fast-forward case. (Don't get too eager, though. That could become obfuscating if overused.) VonC's answer to a related question helpfully elaborates on this topic.
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How to form tuple column from two columns in Pandas
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df['new_col'] = list(zip(df.lat, df.long))
It's less complicated and faster than using apply or map. Something like np.dstack is twice as fast as zip, but wouldn't give you tuples.
share
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node and Error: EMFILE, too many open files
...server to read it. Even if your files are small and reading or updating is fast, it takes some time, but in the same time your loop don't stop to open new files descriptor. So if you have too many files, the limit will be soon reached and you get a beautiful EMFILE.
There is one solution, creating...
Default implementation for Object.GetHashCode()
...ces a dilemma: make a good distribution of the hash function or to make it fast. In some cases, it's possible to achieve them both, but it is hard to do this generically in ValueType.GetHashCode.
The canonical hash function of a struct "combines" hash codes of all the fields. But the only way to get...
How do streaming resources fit within the RESTful paradigm?
...s this break the RESTful paradigm? What if I want to be able to rewind or fast forward the stream? Is this possible within the RESTful paradigm? So: How do streaming resources fit within the RESTful paradigm?
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Code signing certificate for open-source projects?
...SL). I'm very satisfied with their service: Their customer service is very fast, and their prices are very reasonable.
Getting the code-signing certificate
Getting a code signing certificate requires Class 2 Identity Validation. StartCom guides you through the whole process (with excellent...
How do I revert a Git repository to a previous commit?
...p;& git clean -f
This has been the best option for me! It is simple, fast and effective!
** Note:** As mentioned in comments don't do this if you're sharing your branch with other people who have copies of the old commits
Also from the comments, if you wanted a less 'ballzy' method you...
Are there any O(1/n) algorithms?
...run-time growth, this is less viable … a meaningful algorithm cannot get faster as the input grows. Sure, you can construct an arbitrary algorithm to fulfill this, e.g. the following one:
def get_faster(list):
how_long = (1 / len(list)) * 100000
sleep(how_long)
Clearly, this function sp...
What is causing “Unable to allocate memory for pool” in PHP?
...0) while
having a lot of php files to cache, then the cache fills up quite fast
and apc doesn't find anything which it can remove because all files in
the cache still fit in the ttl.
increasing the memory size is only a part solution, you still run in
this error if you cache fills up and all files ...