• Craig Black (4/4) May 01 2006 Are structs in D passed by reference by default? I know if I specify "o...
• Derek Parnell (7/11) May 01 2006 As far as I can see when using the "in" type of argument, structs are
• Oskar Linde (6/9) May 02 2006 Regular parameters without qualifiers are "in" by default. Structs as

"Craig Black" <cblack ara.com> writes:

Are structs in D passed by reference by default?  I know if I specify "out" 
or "inout" they would have to be, but what about just regular parameters 
without qualification?

-Craig 

"Derek Parnell" <derek psych.ward> writes:

On Tue, 02 May 2006 01:54:54 +1000, Craig Black <cblack ara.com> wrote:

 Are structs in D passed by reference by default?  I know if I specify  
 "out"
 or "inout" they would have to be, but what about just regular parameters
 without qualification?

As far as I can see when using the "in" type of argument, structs are  
copied to the stack before calling the function and popped off when the  
function returns.

-- 
Derek Parnell
Melbourne, Australia

Oskar Linde <oskar.lindeREM OVEgmail.com> writes:

Craig Black skrev:
 Are structs in D passed by reference by default?  I know if I specify "out" 
 or "inout" they would have to be, but what about just regular parameters 
 without qualification?

Regular parameters without qualifiers are "in" by default. Structs as 
in-parameters are always passed by value. (Internally, there may be a 
pointer to a stack allocated copy involved depending on the local 
platform ABI, but that does not change the semantics.)


/Oskar