rmccue/Requests — pull request #14 by castarco (2012-03-13 20:44:12+00:00)
Title: Changed is_null call with direct strict comparison (for performance reasons)

It's interesting to use direct strict comparison instead of calling the is_null function to avoid the little overhead of calling a function (interesting in cases where the code is called thousands of times per second).

An interesting discussion about this topic in stackoverflow: http://stackoverflow.com/questions/8228837/is-nullx-vs-x-null-in-php :) .