DMD 0.174 release

[Walter Bright]

Stewart Gordon wrote:
> Walter Bright wrote:
>> Stewart Gordon wrote:
>>> Moreover, this whole way of putting things can lead one to wonder 
>>> whether variables declared in the body are reinitialized each 
>>> iteration....
>>
>> Why? A declaration is just like an assignment statement. It is 
>> executed when it appears. If it appears in a loop, it is executed each 
>> iteration of that loop.
> 
> True in general, but....
> 
> - in general, a declaration such as
> 
>     int x;
> 
> doesn't look like an assignment statement

Since D has default assignment in declarations, it is one. It behaves 
the same way in C++ (for types that have default constructors). D isn't 
doing anything weird here.

> - the idea of the same variable being declared multiple times in the 
> same instance of being in the same scope is alien to many

? You cannot declare the same variable multiple times in the same scope.

> - there are also static local variables, which aren't reset each time

Again, this behaves just like C++, and should not be surprising.

> Moreover, your claim that the _body_ of a for loop doesn't create a 
> scope would also mean that ScopeGuardStatements and scope (fka auto) 
> object references within the body are not processed at the end of each 
> iteration, but saved until the end of the whole for loop.  Absolutely 
> not the behaviour I'm experiencing.

The for statement itself generates a scope, not the { }. This behaves 
exactly like the for statement in C++.