On Thu, Jun 30, 2016, at 01:10 PM, awickert wrote: > > > Am Donnerstag, 30. Juni 2016 08:29:32 UTC+2 schrieb krma...@gmail.com: >> I want a single instance of a client handle to be initialized. >> >> Is it ok to declare the instance as >> >> var client MetricsClient >> >> and then initialize it using sync.Once(). >> >> Is it required for some reason that the client be a pointer or are >> there are other issues with it. My requirement is to be able to >> initialize that handle just once > > You can implement a singelton similar to Java. A paper [0] has already > solved the problem in 2010. Simply take a look at section 3.1. > > > [] http://www.doc.ic.ac.uk/~ncameron/papers/schmager_plateau10.pdf The solution presented in the paper is racy and it would be quite possible to get two copies of the registry. Better to use sync.Once to initialise it. -- Ian
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