On May 5, 2005, at 3:02 PM, Sriram Krishnan wrote:
However, any time that I think about changing an invariant of the Python
language I get rather nervous about the
ramifications...
One ramification that I can instantly think of is looping over an array of
valuetypes. On more than one occasion, doing a foreach over an array of
structs in C# has bitten me
People would break their heads trying to find the bug with this piece of
code (assuming that this change is implemented)
for point in apt: point.X = point.X + 1 #do something with the point struct
But frankly, I can't see how you can fix this.Valuetypes are going to take
some getting used to for Pythonistas
There are ways you *could* fix the issue:
(1) Don't have mutable value types, use a reference type that points to a value type (some kind of proxy)
(2) Make value types immutable (or at least the ones you grab from collections)
-bob
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