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There exist several DI frameworks / libraries
in the Scala
ecosystem. But the more functional code you write the more you'll realize there's no need to use any of them.
A few of the most claimed benefits are the following:
I was talking to a coworker recently about general techniques that almost always form the core of any effort to write very fast, down-to-the-metal hot path code on the JVM, and they pointed out that there really isn't a particularly good place to go for this information. It occurred to me that, really, I had more or less picked up all of it by word of mouth and experience, and there just aren't any good reference sources on the topic. So… here's my word of mouth.
This is by no means a comprehensive gist. It's also important to understand that the techniques that I outline in here are not 100% absolute either. Performance on the JVM is an incredibly complicated subject, and while there are rules that almost always hold true, the "almost" remains very salient. Also, for many or even most applications, there will be other techniques that I'm not mentioning which will have a greater impact. JMH, Java Flight Recorder, and a good profiler are your very best friend! Mea
-- split-string-into-rows.sql | |
-- Duane Hutchins | |
-- https://www.github.com/duanehutchins | |
-- Split a string into a mysql resultset of rows | |
-- This is designed to work with a comma-separated string (csv, SET, array) | |
-- To use a delimiter other than a comma: | |
-- Just change all the occurrences of ',' to the new delimiter | |
-- (four occurrences in SET_EXTRACT and one occurrence in SET_COUNT) |