🚀 go-pugleaf

On 20 Sep 95 18:43:00 GMT, shankar@engr.sgi.com (Shankar Unni) wrote:

>Kevin Lentin (kevinl@fangorn.cs.monash.edu.au) wrote:
>> With is purely a piece of syntactical sugar (with some ugly type problems
>> described elsewhere in this thread). It provides a way of making your life
>> easier (or different). Not the compiler.
>
>It is an evil piece of syntactic sugar. Wait till these "with"'s start
>getting nested, and have giant, 500+-line blocks inside them. Reading the
>resultant code is a *nightmare*.

Actually, the C++ draft includes a keyword 'using' that does what the
Pascal 'with' keyword does and many more things.  Since C++ will have
the concept of 'namespace', the 'using' keyword allows one to switch a
block of code to use the names in another namespace.

The example given is as follows:

struct B
	{
	void f(char);
	void g(char);
	};

struct D : B
	{
	using B::f;
	void f(int) { f('c'); } // calls B::f(char)
	void g(int) { g('c'); } // recursively calls d::g(int)
	}

This applies to member functions, variables, typedefs and any other
nested names declared or defined.



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