The Clean Code Talks - "Global State and Singletons"

Google Tech Talks
November 13, 2008

ABSTRACT

The Clean Code Talk Series

Speaker: Misko Hevery

• Category

  People & Blogs

[deathbyaclown]

i learned - next time I test a credit card system - I will use charge(1) :)

[spleenblender]

God I learned this the hard way at my internship. It DOES drive you crazy...

[yurikolovsky]

Global state is unavoidable when you work with any information, we should not disregard it, but instead we need to learn how to work with it.

[coolzidedown]

is there a tl;dr of this? i dont feel like watching the entire hour. i might anyway tho

[joelie83]

I'm not fond of this audience.

[Ionel Lescai]

why the hell we're we taught the singleton pattern anyway ?

[blah98982]

The guy at the beginning trying to catch the speaker out on a completely arbitrary and irrelevant method name is painful to watch.

[mexetr]

The Turing Complete one.

[PutBoy]

public static destroy(){  instance = null;

}

done, you can now test it

[Nezmundo00]

I couldn't find a part where he says that in this video. He has said something like that elsewhere. But he was talking about unit testing procedural code and I think he's right. You cannot unit test procedural code unless the method under test is at the edge of the call graph. Otherwise the method is calling another method and you are expanding your test into a mid or large scale test. You no longer have a unit test.