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How to convert a ruby hash object to JSON?
...json/ext' # to use the C based extension instead of json/pure
puts {hash: 123}.to_json
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Getting distance between two points based on latitude/longitude
...to the wise, this formula requires all degrees be positive. radians(abs(52.123)) should do the trick...
– Richard Dunn
Jul 4 '17 at 11:41
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What's the best strategy for unit-testing database-driven applications?
...o the production systems. At this point we'd have diverging schemas. Not fun.
Mocking Database Server:
We also do this at my current job. After every commit we execute unit tests against the application code that have mock db accessors injected. Then three times a day we execute the full db bu...
Is there a good reason to use upper case for SQL keywords? [closed]
...ited Oct 17 '14 at 16:09
hichris123
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answered Nov 16 '08 at 8:22
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How do I use itertools.groupby()?
... edited Jul 29 at 20:57
Seanny123
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answered Aug 10 '08 at 18:45
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Why are preprocessor macros evil and what are the alternatives?
... actually know what is going on.
Replacement: Use enum or const T
For "function-like" macros, because the debugger works on a "per source line where you are" level, your macro will act like a single statement, no matter if it's one statement or a hundred. Makes it hard to figure out what is goin...
How do you use “git --bare init” repository?
... them to git and create the first commit.
> cd /path/to/work
> echo 123 > afile.txt
> git add .
> git config --local user.name adelphus
> git config --local user.email adelphus@example.com
> git commit -m "added afile"
[master (root-commit) 614ab02] added afile
1 file changed,...
What is the maximum amount of RAM an app can use?
...rtions of available RAM are good enough for cache in my case (1% and 3%).
Fun fact: Android does not have any APIs or other hacks to get the amount of memory allocated to your app, it's calculated on the fly based on various factors.
P.S. I'm using a static class field to hold a cache but as per...
Get __name__ of calling function's module in Python
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123
Check out the inspect module:
inspect.stack() will return the stack information.
Inside a fu...
What does flushing the buffer mean?
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Consider writing to a file. This is an expensive operation. If in your code you write one byte...