On Mon, 3 Mar 2008, Gael Varoquaux apparently wrote:
* Type validation of attributes: the attributes of an object can be given a type descriptor (more precisely a validation method) and the compliance of the attribute is checked at run-time when this attribute is set. This is very useful for complex codebase, but probably not for you.
On Mon, Mar 03, 2008 at 07:20:05PM -0500, Alan G Isaac wrote:
Can you easily state briefly how this differs from the use of properties (with type checking on the setter)?
On Tue, 4 Mar 2008, Gael Varoquaux apparently wrote:
Fundementaly, I don't think this differs much. You have a lot of syntactic sugar around it, which makes the code more readable, and easier to reuse, as it gives the commonly used patterns (dynamical initialisation, delegation, as well as a lot of existing validation types). Don't under-estimate the work to get the syntax and the different patterns right. When you use it a lot, Traits simply "feels right". ... In addition, the property-calling code is written in C, which makes it orders of magnitude faster than standard Python properties.
Thanks! Alan