include

[Alexander Fleck]

Hi,
is the Ruby-'include' equal to a C++-'using' statement? Meant for namespace issues. Or does it have a bigger result?
Thanks,
Alex.

 

[Christophe Grandsire]

Hi,
is the Ruby-'include' equal to a C++-'using' statement? Meant for names= pace
issues. Or does it have a bigger result?
Thanks,
Alex.

"include" is used to mix in a module into a class. It has nothing to do w=
ith
namespaces, but is rather a way to quickly add functionality to a class b=
eyond
what is given by its superclass without resorting to multiple inheritance=

 

[Robert Klemme]

"include" is used to mix in a module into a class. It has nothing to
do with namespaces, but is rather a way to quickly add functionality
to a class beyond what is given by its superclass without resorting
to multiple inheritance=

Adding to that "extend" is more similar to "using". Using "extend" you
can make some things (i.e. methods) from a module directly available.

Kind regards

robert

 

[Christophe Grandsire]

Adding to that "extend" is more similar to "using". Using "extend" you
can make some things (i.e. methods) from a module directly available.

Indeed. And if you defined module methods in the module, you can even cal=
l them
directly with the module name, without having to use "extend" to access t=
hem.

In other words, one can, and does, use modules for namespaces already. Yo=
u just
*don't* do that with "include", but rather without it .
--
Christophe Grandsire.

http://rainbow.conlang.free.fr

It takes a straight mind to create a twisted conlang.