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Groups > comp.soft-sys.math.mathematica > #1502

Shadow problem of a variable defined in a function context inside different packages

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Hi,

I recovered this peace of code here in the forum (sorry but I no
longer remember it's exact origin), that I use at the end of a
package, to automatically set attributes to all the definitions of the
package.

ToExpression[Names["myPackage`*"], InputForm, Function[x,
SetAttributes[x, {ReadProtected,Locked}], HoldAll]]

The problem with it is that whenever I load two different packages
that were created using this same piece of code, I get a shadowing
message for symbol x.

Can't understand why, since x is in the scope of the function.
I tried to do a Module, but with no success.

I ended up with the following alternative, that works fine:
ToExpression[Names["myPackage`*"], InputForm, SetAttributes[#,
{ReadProtected,Locked}] &]

Nevertheless I was wondering why the first expression doesn't work.
Any clues?

Thank you,
P. Fonseca

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Shadow problem of a variable defined in a function context inside different packages Fonseca <public@fonseca.info> - 2011-04-06 09:14 +0000

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