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Is there a MySQL option/feature to track history of changes to records?
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Best suggestion I've seen yet to this problem
– Worthy7
Jul 15 '16 at 7:34
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OO Design in Rails: Where to put stuff
...idea, but the corollary--putting everything in the model, isn't really the best plan.
In Ruby, you have a couple of good options for making things more modular. A fairly popular answer is to just use modules (usually stashed in lib) that hold groups of methods, and then include the modules into the...
Many-to-many relationship with the same model in rails?
... alternative method with has_many and a model for the join table.
This is best seen when simply accessing the associations from irb, and looking at the SQL that Rails generates in the log file. You'll find something like the following:
SELECT * FROM "posts"
INNER JOIN "post_connections" ON "posts"...
Why is processing a sorted array faster than processing an unsorted array?
...ing back, and restarting.
This is branch prediction. I admit it's not the best analogy since the train could just signal the direction with a flag. But in computers, the processor doesn't know which direction a branch will go until the last moment.
So how would you strategically guess to minimize t...
Git for beginners: The definitive practical guide
...~/.gitglobalignore
You're done!
I find the gitignore man page to be the best resource for more information.
share
edited Nov 25 '08 at 1:19
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How to get first and last day of previous month (with timestamp) in SQL Server
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Not thinking CONVERT is the best solution if CAST is available
– Kennah
Jun 28 '19 at 19:29
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Regular expressions in C: examples?
I'm after some simple examples and best practices of how to use regular expressions in ANSI C. man regex.h does not provide that much help.
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Greenlet Vs. Threads
...because Python exposes the native threading interface, and threads are the best supported and lowest common denominator for both parallelism and concurrency in modern operating systems.
– Matt Joiner
Mar 24 '13 at 11:09
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What is the difference between LR, SLR, and LALR parsers?
...s are the same size or slightly larger than LALR parser tables, giving the best solution.
LRSTAR 10.0 can generate LALR(1), LR(1), CLR(1) or LR(*) parsers in C++, whatever is needed for your grammar. See this diagram which shows the difference among LR parsers.
[Full disclosure: LRSTAR is my pro...
How to design a multi-user ajax web application to be concurrently safe
...) to propagate changes to the user as soon as they are made to the db. The best technique currently available for this seems to be Ajax long polling, but it isn't supported by every browser, so you need fallbacks. Fortunately there are already solutions that handle this for you. Among them are: orbi...