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What are the performance characteristics of sqlite with very large database files? [closed]
...Optimize your schema to store what you need. Sometimes this means breaking down tables and/or even compressing/transforming your data before inserting to the database. A great example is to storing IP addresses as (long) integers.
One table per db file - to minimize lock contention. (Use ATTACH DATA...
Should I use a class or dictionary?
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I've marked this down because you should always default to the simpler data structure where possible. In this case, a dictionary is sufficient for the intended purpose. The question where would your __init__ code go? is concerning. It could p...
Update Git submodule to latest commit on origin
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# Now the submodules are in the state you want, so
git commit -am "Pulled down update to submodule_dir"
Or, if you're a busy person:
git submodule foreach git pull origin master
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Import an existing git project into GitLab?
...nds run locally on my computer:
To illustrate my example, I will be using https://github.com/raveren/kint as the source repository that I want to import into gitlab. I created an empty project named Kint (under namespace raveren) in gitlab beforehand and it told me the http git url of the newly cre...
Compile time string hashing
...t whether it's possible to add some sort of numbers/letters/roman numerals down the hierarchy to identify pieces like this...
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Sharing link on WhatsApp from mobile website (not application) for Android
...id, WhatsApp web, IOS etc.
You just need to use this format:
<a href="https://api.whatsapp.com/send?phone=whatsappphonenumber&text=urlencodedtext"></a>
UPDATE-- Use this from now(Nov-2018)
<a href="https://wa.me/whatsappphonenumber/?text=urlencodedtext"></a>
U...
How do you use https / SSL on localhost?
... property pages, then start options and assign the start URL - put the new https with the new port (usually 44301 - notice the similarity to port 443) and your project will start correctly from then on.
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Limitations of Intel Assembly Syntax Compared to AT&T [closed]
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It's the "same language", in that it compiles down to the same machine code, has the same opcodes, etc. On the other hand, if you are using GCC at all, you will probably want to learn AT&T syntax, just because it's the default--no changing compiler options, etc. to g...
How to speed up insertion performance in PostgreSQL
...f total 30MI) rows and then the performance sinks drastically (all the way down to 1min per 100K).
I will not list all of the things that did not work and cut straight to the meat.
I dropped a primary key on the target table (which was a GUID) and my 30MI or rows happily flowed to their destinat...
Why doesn't Java Map extend Collection?
...tantly, does it really add any value? You may find this abstraction breaks down once you start looking at the corner cases.
It's worth noting that the HashSet is actually implemented as a HashMap, not the other way around. This is purely an implementation detail but is interesting nonetheless.
The...