DMD 0.148 - scope guard

[Walter Bright]

"Ben Hinkle" <bhinkle at mathworks.com> wrote in message 
news:dtv8f5$1svn$1 at digitaldaemon.com...
>
> "Walter Bright" <newshound at digitalmars.com> wrote in message 
> news:dtr2fg$2vqr$4 at digitaldaemon.com...
>> Scope guards are a novel feature no other language has. They're based on 
>> Andrei Alexandrescu's scope guard macros, which have led to considerable 
>> interest in the idea. Check out the article 
>> www.digitalmars.com/d/exception-safe.html
>
> Note GCC has pretty much the same thing with the "cleanup" attribute 
> extension on variables: 
> http://gcc.gnu.org/onlinedocs/gcc-3.3.1/gcc/Variable-Attributes.html

cleanup only corresponds with on_scope_exit, not the other two. It also only 
runs a function with a local variable as a parameter - i.e. it is the same 
thing as RAII. It doesn't allow arbitrary code to be executed, nor manage 
things like state of a class member, etc.