On Saturday, 25 November 2017 at 22:13:43 UTC, Adam D. Ruppe
wrote:
It technically did:
https://dlang.org/spec/function.html#local-variables
"It is an error to use a local variable without first assigning
it a value. The implementation may not always be able to detect
these cases. Other language compilers sometimes issue a warning
for this, but since it is always a bug, it should be an error. "
But that paragraph was never implemented (it is a bit easier
said than done to actually detect given if conditions and stuff
too, especially in the early days of D when the compiler didn't
even make any effort to track such things, though it does
now...). The compiler author took the easy way out of
initializing them to invalid values instead.
WOW!! I am shocked to learn this. All this time, I though it was
a design oversight. I think I'm going to implement a feature
gate to require explicit initialization. It would be better to
be strict up front and relax it as flow control analysis becomes
more mature.
Mike
