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Код: Выделить всё

cd /usr/src/ && man man

Код: Выделить всё

   use Inline CPP;

   my $q = new Queue;
   $q->q(50);
   $q->q("Where am I?");
   $q->q("In a queue.");
   print "There are ", $q->size, " items in the queue\n";
   while($q->size) {
     print "About to dequeue:  ", $q->peek, "\n";
     print "Actually dequeued: ", $q->dq, "\n";
   }

   my $s = new Stack;
   $s->push(42);
   $s->push("What?");
   print "There are ", $s->size, " items on the stack\n";
   while($s->size) {
     print "About to pop:    ", $s->peek, "\n";
     print "Actually popped: ", $s->pop, "\n";
   }

   __END__
   __CPP__

   class Queue {
   public:
     Queue(int sz=0) { q = newAV(); if (sz) av_extend(q, sz-1); }
     ~Queue() { av_undef(q); }

     int size() {return av_len(q) + 1; }

     int q(SV *item) { av_push(q, SvREFCNT_inc(item)); return av_len(q)+1; }
     SV *dq() { return av_shift(q); }
     SV *peek() { return size() ? SvREFCNT_inc(*av_fetch(q,0,0)): &PL_sv_undef;}

   private:
     AV *q;
   };

   class Stack {
   public:
     Stack(int sz=0) { s = newAV(); if (sz) av_extend(s, sz-1); }
     ~Stack() { av_undef(s); }

     int size() { return av_len(s) + 1; }

     int push(SV *i) { av_push(s, SvREFCNT_inc(i)); return av_len(s)+1; }
     SV *pop() { return av_pop(s); }
     SV *peek() { return size() ? SvREFCNT_inc(*av_fetch(s,size()-1,0)) : &PL_sv_undef; }

   private:
     AV *s;
   };

Код: Выделить всё

I don't know C or C++, should I learn C first?
No. Learn C++ first. The C subset of C++ is easier to learn for C/C++ novices and easier to use than C itself. The reason is that C++ provides better guarantees than C (stronger type checking). In addition, C++ provides many minor features, such as the `new' operator, that are notationally more convenient and less error-prone than their C alternatives. Thus, if you plan to learn C and C++ (or just C++) you shouldn't take the detour through C. To use C well, you need to know tricks and techniques that aren't anywhere near as important or common in C++ as they are in C. Good C textbooks tends (reasonably enough) to emphasize the techniques that you will need for completing major projects in C. Good C++ textbooks, on the other hand, emphasizes techniques and features that lead to the use of C++ for data abstraction and object-oriented programming. Knowing the C++ constructs, their (lower-level) C alternatives are trivially learned (if necessary).

To show my inclinations:

To learn C use:

	Kernighan and Ritchie:
	The C programming Language (2nd edition)
	Prentice Hall, 1988.


as the primary textbook.

To learn C++ use

	Stroustrup:
	The C++ Programming Language (2nd edition).
	Addison Wesley, 1991.

Both books have the advantage of combining a tutorial presentation of language features and techniques with a complete reference manual. Both describes their respective languages rather than particular implementations and neither attempts to describe particular libraries shipped with particular implementations.

There are many other good textbooks and many other styles of presentation, but these are my favorites for comprehension of concepts and styles. It is always wise to look carefully at at least two sources of information to compensate for bias and possible shortcommings.