still confused about call by reference

[Jarrett Billingsley]

"Hoenir" <mrmocool at gmx.de> wrote in message 
news:fgb3h9$2q19$1 at digitalmars.com...
>> You can read all about it in "Dynamic Initializaion of Structs" here: 
>> http://www.digitalmars.com/d/1.0/struct.html
> Thanks a lot for that link!
> Though I don't really get the purpose of opCall. For normal member 
> initialization struct literals are completely sufficient. opCall would 
> just make sense as a copy constructor, but this does not work.

Struct literals were added after static opCall was 'blessed', so static 
opCall was the only way to fly for a while.  Even then, the dynamic struct 
literals use a completely different syntax from the static struct 
initializers (another big *sigh*).  But it's still useful to have a 
constructor function to i.e. check valid values, perform preprocessing on 
the values, fill in other members based on values that you give, etc.