The stdlib uses that pattern from time to time to indicate an
unsafe block in an otherwise safe function.
Specifically it is a little trusted inline function being
immediately called.
It is something that should be avoided whenever you can.
Thanks your help. where is unsafe in above code?
Hi:
In dlang core.thread.osthread has below code, the 654 line
code i can understand why write () first, and {m_fn = fn;}() do
what?
```
this( void function() fn, size_t sz = 0 ) @safe pure nothrow
@nogc
647 in
648 {
649 assert( fn );
650 }
651 do
Hi:
I write code like this
```D
class Base
{
int base;
}
class CC :Base
{
int cc;
}
auto cc = new CC;
//I want check cc object type is CC
if (typeid(cc) == typeid(CC)) // ok ==
if (cc.classinfo == AstAssignNode) //error
if (cc.classinfo == AstAssignNode.classinfo) // ok ==
```
