http://codex.grimoire.ca/2009/03/10/singled-out/ Any insufficiently advanced magic is indistinguishable from technology. Mon, 06 Sep 2010 05:20:33 +0000 http://wordpress.org/?v=2.7.1 hourly 1 http://codex.grimoire.ca/2009/03/10/singled-out/comment-page-1/#comment-163 larry Wed, 11 Mar 2009 18:18:58 +0000 http://codex.grimoire.ca/?p=78#comment-163 yup :) yup :)

]]> http://codex.grimoire.ca/2009/03/10/singled-out/comment-page-1/#comment-162 The Grimoire » Singling Out to Spring Wed, 11 Mar 2009 15:44:19 +0000 http://codex.grimoire.ca/?p=78#comment-162 [...] Last time, I wrote about why Singletons get a bad rap, and I wrote some high-level advice for moving away from them sanely. I want to cover a practical (if somewhat idealistic) example using Java and Spring to move a Singleton creation dependency out of a class. First, a quick terminology aside. The term “Singleton” is actually drawn from set theory, where it means “a set with only one element”. The set of integers that equal 5 is a singleton. The analogy is that types (which are sets of values) that are Singletons also only have one value (the Singleton instance). This has caused a bit of confusion. [...] [...] Last time, I wrote about why Singletons get a bad rap, and I wrote some high-level advice for moving away from them sanely. I want to cover a practical (if somewhat idealistic) example using Java and Spring to move a Singleton creation dependency out of a class. First, a quick terminology aside. The term “Singleton” is actually drawn from set theory, where it means “a set with only one element”. The set of integers that equal 5 is a singleton. The analogy is that types (which are sets of values) that are Singletons also only have one value (the Singleton instance). This has caused a bit of confusion. [...]

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