On Wed, 2011-03-02 at 19:45 -0800, Yingjie Lan wrote: > Hi everyone, > > Variables in Python are resolved dynamically at runtime, which comes at a > performance cost. However, a lot of times we don't need that feature. > Variables > can be determined at compile time, which should boost up speed. Therefore, I > wonder if it is a good idea to have static variables as well. So at compile > time, a variable is determined to be either static or dynamic (the reference > of > a static varialbe is determined at compile time -- the namespace > implementation > will consist of two parts, a tuple for static variables and a dict for > dynamic > ones). The resolution can be done at the second pass of compilation. By > default, > variables are considered static. A variables is determined dynamic when: 1. > it > is declared dynamic; 2. it is not defined locally and the nearest namespace > has > it declared dynamic. A static variable can't be deleted, so a deleted > variable > must be a dynamic one: we can either enforce that the variable must be > explicitly declared or allow a del statement to implicitly declare a dynamic > variable. > > Any thoughts? > > Yingjie > > > > I once used this obscure language called "C"; it did kind of what you're talking about.
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