Re: textbook authors: passing by ref is NOT more efficient!

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

Cowboy (Gregory A. Beamer) <NoSpamMgbworld@xxxxxxxxxxxxxxxxxx> wrote:
I am not sure what textbook author (or which authors) you are talking about,
so I cannot assess the comment in context. I would agree, overall, with the
blanket statement that passing by ref is "more efficient" if we are seeing
efficiency in terms of performance and we are talking reference objects. If
I run a million iterations, I will see a slight performance benefit by
passing by reference, as I am not allocating memory in many cases.

Why would any more memory be allocated by passing a reference by value
than by passing a reference by reference?

Can you give a complete example which shows this efficiency gain, with
reference types?

--
Jon Skeet - <skeet@xxxxxxxxx>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
World class .NET training in the UK: http://iterativetraining.co.uk
.

Relevant Pages

  • Re: pointer syntax
    ... > really passing a reference (which is like an old-school pointer, ... > a copy of the primitive's value and passing that. ... build them yourself with pointers. ... mean a var parameter, write a var parameter. ...
    (comp.lang.pascal.delphi.misc)
  • Re: Passing by reference
    ... It depends upon the reason one is passing the reference. ... instantiate all relationships via a constructor so there will always be ... I naturally think of 'getter' methods as 'knowledge ...
    (comp.object)
  • Re: Using ref
    ... the address of a variable that contains a reference to an object, ... the C version is passing the address of a variable that contains the   ... Inasmuch as the specification is unambiguous, there is a single truth. ... Every time he states the incorrect view, I will feel compelled to correct his incorrect statements. ...
    (microsoft.public.dotnet.languages.csharp)
  • Re: Derived type argument to subroutine
    ... In practice, they often, but not always are. ... I can rely on the fact that arguments are passed by reference. ... Would the printed value always be 4, or is it undefined as the passing ... With an important exception, ...
    (comp.lang.fortran)
  • Re: Passing an object reference 1000 times
    ... Nicholas Paldino ... i do know i am passing a *reference* to the object; ... >> I think that the assumption you are making is that when you are>> passing a reference type around, you are copying it as you make the call ...
    (microsoft.public.dotnet.languages.csharp)