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Counting inversions in an array
...on in C++11, including a general iterator-based solution and sample random testbed using sequences from 5-25 elements. Enjoy!.
– WhozCraig
Apr 20 '14 at 20:15
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How should I read a file line-by-line in Python?
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f = open('test.txt','r')
for line in f.xreadlines():
print line
f.close()
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Best way to select random rows PostgreSQL
... 0.01;
EXPLAIN select * from table order by random() limit 1000;
A quick test on a large table1 shows, that the ORDER BY first sorts the complete table and then picks the first 1000 items. Sorting a large table not only reads that table but also involves reading and writing temporary files. The wh...
What is the most efficient way to deep clone an object in JavaScript?
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Checkout this benchmark: http://jsben.ch/#/bWfk9
In my previous tests where speed was a main concern I found
JSON.parse(JSON.stringify(obj))
to be the slowest way to deep clone an object (it is slower than jQuery.extend with deep flag set true by 10-20%).
jQuery.extend is pretty fast...
Entity Attribute Value Database vs. strict Relational Model Ecommerce
...NoSQL databases.
I've never practiced NoSQL in a production context (just tested MongoDB and was impressed) but the whole point of NoSQL is being able to save items with varying attributes in the same "document".
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What is “X-Content-Type-Options=nosniff”?
I am doing some penetration testing on my localhost with OWASP ZAP, and it keeps reporting this message:
5 Answers
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Is there an equivalent of CSS max-width that works in HTML emails?
...for font-size to fill in for the times height isn't respected (I'd want to test it on all trs and then on all tds to see exactly where it's needed). @EdL if you're able to get a lighter solution working as well as this that'd be awesome - please post it here and in that linked gist
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Quickest way to convert a base 10 number to any base in .NET?
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I perf tested all of the solutions on this page, and this is the fastest, about twice as fast as the short solution at the end.
– Justin R.
Oct 3 '14 at 18:36
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What's the difference between HEAD, working tree and index, in Git?
...nt after each step, but save the commit until I've gotten back to working, tested code.
Notes:
the workspace is the directory tree of (source) files that you see and edit.
The index is a single, large, binary file in <baseOfRepo>/.git/index, which lists all files in the current branch...
What is the difference between Gemfile and Gemfile.lock in Ruby on Rails
...ns. (Running different versions on different machines could lead to broken tests, etc.) You shouldn't ever have to directly edit the lock file.
Check out Bundler's Purpose and Rationale, specifically the Checking Your Code into Version Control section.
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