The future of Python immutability

[Steven D'Aprano]

On Fri, 04 Sep 2009 19:23:06 -0700, sturlamolden wrote:

> I one did a test of NumPy's mutable arrays against Matlab's immutable
> arrays on D4 wavelet transforms. On an array of 64 MB of double
> precision floats, the Python/NumPy version was faster by an order of
> magnitude.

Is the difference because of mutability versus immutability, or because 
of C code in Numpy versus Matlab code? Are you comparing bananas and 
pears?

Without knowing what the test consisted of, and what it actually 
measures, this comparison is meaningless.


-- 
Steven