{"id":8,"date":"2008-05-22T17:43:00","date_gmt":"2008-05-22T17:43:00","guid":{"rendered":"http:\/\/www.andypalmer.com\/blog\/?p=8"},"modified":"2009-05-22T13:10:14","modified_gmt":"2009-05-22T13:10:14","slug":"singletons","status":"publish","type":"post","link":"https:\/\/andypalmer.com\/2008\/05\/singletons\/","title":{"rendered":"Singletons"},"content":{"rendered":"<p>I&#8217;ve been playing about with a code base that has a large number of singletons, for what appears to be no apparent reason.<br \/>Something about singletons doesn&#8217;t sit quite right with me, but in the most part, if they&#8217;re not misbehaving, I&#8217;ll probably leave them be.<\/p>\n<p>The thing that bothers me a lot more though, is the fact that everyone else is forced to know about your singleton-ness..<\/p>\n<p><code>ImASingleton.getInstance().doSomething();<\/code><\/p>\n<p>*shivers*<\/p>\n<p>If you have to store global state, it would be nice if we could hide that from the clients. Why do we have a single instance with instance variables accessed through a static getInstance method, when we could hide (ooh, encapsulation) the implementation behind multiple instances with private static variables?<br \/>By using instance methods, we also get all the interface \/ testing \/ mocking goodness.<\/p>\n<p><code>new ImASingletonButYouCantTell().doSomething();<\/code><\/p>\n<p>OK, I&#8217;m rambling&#8230; am I missing something? (please rant below)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;ve been playing about with a code base that has a large number of singletons, for what appears to be no apparent reason.Something about singletons doesn&#8217;t sit quite right with me, but in the most part, if they&#8217;re not misbehaving, I&#8217;ll probably leave them be. The thing that bothers me a lot more though, is [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[20,17,21],"_links":{"self":[{"href":"https:\/\/andypalmer.com\/wp-json\/wp\/v2\/posts\/8"}],"collection":[{"href":"https:\/\/andypalmer.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/andypalmer.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/andypalmer.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/andypalmer.com\/wp-json\/wp\/v2\/comments?post=8"}],"version-history":[{"count":1,"href":"https:\/\/andypalmer.com\/wp-json\/wp\/v2\/posts\/8\/revisions"}],"predecessor-version":[{"id":123,"href":"https:\/\/andypalmer.com\/wp-json\/wp\/v2\/posts\/8\/revisions\/123"}],"wp:attachment":[{"href":"https:\/\/andypalmer.com\/wp-json\/wp\/v2\/media?parent=8"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/andypalmer.com\/wp-json\/wp\/v2\/categories?post=8"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/andypalmer.com\/wp-json\/wp\/v2\/tags?post=8"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}