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From: chris@island.COM (Chris King)
Newsgroups: comp.lang.c++
Subject: Re: const vs. static in class declaration
Keywords: const, static, class constants
Message-ID: <3864@island.COM>
Date: 2 Apr 91 17:32:14 GMT
References: <286@dayton.stanford.edu> <139@grenada.island.COM>
Organization: Island Graphics, Marin County, California
Lines: 44

roger@grenada.island.COM (Roger Corman) writes:
> Roger expains how to declare a const static class member.

Initialization of const static class members are one thing that I really
think have been poorly thought out in c++. I didn't realize that g++
allowed them to be initialized in the class decleration. This seems
like a defininate improvment over cfront. I hope the ansi commitee
will consider adding this g++ feature to the standard.

In addition, one thing that I wish I could do is the following:

class array_of_jive {
    static const int num_elements = 10;
    struct jive a[num_elements];

    void tweak_all()
    {
	for ( int i = 0 ; i < num_elements; ++i )
	    a[i].tweak();
    }
};
       
but unfortunatly the compiler won't let me do this, so, rather than
use a define (I hate defines), I usually do the following:

class array_of_jive {
    struct jive a[10];

    inline int num_elements() { return(sizeof(a)/sizeof(struct jive)); }

   void tweak_all()
   {
       for ( int i = 0 ; i < num_elements(); ++i )
           a[i].tweak();
    }
};

Has anybody found a easier way of doing this.

					Chris King
					Island Graphics Corp.
					San Rafael Ca.
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