At 04:47 18/07/2007, Lukas Kahwe Smith wrote:
Zeev Suraski wrote:
Finally, at the risk of sounding like a broken record, we always
need to remember that BC breakage accumulates, and it's not
binary. Every cleanup we do in PHP 6 will further slow migration,
and as Andi pointed out a few days ago, things don't look too well as it is.
Agreed, its not binary, but its also not the simple addition of all
issues either. The effort does diminish as you can cover multiple BC
breaks in one going over your code. The key thing that we screwed up
with PHP 5.x was not providing enough documentation on the BC
breaks. Doing this better this time (the migration guides are a good
start, porting some major apps and documenting the issues is
another) could help us easy the transition as well. But as you point
out, there is the fixed overhead of having to do the QA'ing at any rate.
Well I don't think it really diminishes, but I agree that 1+1 is
maybe 1.9 and not 2. On the other hand, if you remember that
perception is everything (or at least very important), 1+1 can easily
be perceived as 3, and in a negative sense.
Zeev
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