[Scons-users] DefaultEnvironment (was Re: StaticLibrary builder)

[Russel Winder]

On Thu, 2012-08-09 at 08:46 -0400, Gary Oberbrunner wrote:
[…]

> I noticed this behavior last year (that you can modify what

> DefaultEnvironment() returns, and that becomes "sticky") and

> considered it a bug.  It's not the default environment anymore if you

> can modify it, right?  (Of course the point is arguable -- you're

> making it *your* default.)  But I don't think it's good SCons usage;

> you're depending on undocumented (and untested, AFAIK) behavior.


As far as I know Python doesn't allow any user defined type to be a
value type, i.e. for instances to be immutable. This is perhaps the one
think that will bring the doom of Python in an increasingly parallel
world. <soapbox/>


> I remember when SCons first came out I had the same reaction to

> Import/Export using strings for the names of the envs, but I've gotten

> used to it and it makes sense to me now.  I'm not sure how you could

> get all the flexibility of Export/Import without string names.


In Python there is no option since variables are just string keys in a
dictionary. On the other hand it means no need for C style pointers :-)

-- 
Russel.
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Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder at ekiga.net
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