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What's the dSYM and how to use it? (iOS SDK)
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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SQL WHERE condition is not equal to?
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BrandonBrandon
64.2k2929 gold badges186186 silver badges218218 bronze badges
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Use email address as primary key?
.... However, this does not matter if you simply retrieve a user from the database using the e-mail address. It does matter if you have complex queries with multiple joins.
If you store information about users in multiple tables, the foreign keys to the users table will be the e-mail address. That mea...
What's the difference between using “let” and “var”?
...tatement.
If you're writing client-side JavaScript code and use a browser based transpiler (like Traceur or babel-standalone), you can safely use the let statement, however your code is likely to be anything but optimal with respect to performance.
If you're writing client-side JavaScript code and...
mysql: see all open connections to a given database?
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64
As well you can use:
mysql> show status like '%onn%';
+--------------------------+-------+
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Is mongodb running?
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hmm, works for me (Ubuntu 64bit VM, Mongo v1.7.6), so I'm not sure why it's not for you tbh. If you can't get it working, best bet may be to post it on the mongodb forums: groups.google.com/group/mongodb-user
– AdaTheDev
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Update just one gem with bundler
...undle update
> ruby -v
ruby 2.6.5p114 (2019-10-01 revision 67812) [x86_64-darwin19]
> gem -v
3.0.3
> bundle -v
Bundler version 2.1.4
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Nearest neighbors in high-dimensional data?
...works poorly in high dimensions. In fact, all current indexing techniques (based on space partitioning) degrade to linear search for sufficiently high dimensions [1][2][3].
Among ANN algorithms proposed recently, perhaps the most popular is Locality-Sensitive Hashing (LSH), which maps a set of poin...
Lua string to int
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In Lua 5.3, (64-bit default) integers are treated accordingly (lua.org/manual/5.3/manual.html): "A numeric constant with a fractional dot or an exponent denotes a float; otherwise it denotes an integer."
– Kevin Lee
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How to list branches that contain a given commit?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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