Practically speaking, what is the difference between arrays and pointers?
Infrequently Asked Questions in comp.lang.cAbout the difference between alcohol and marijuana; they have different characteristics, and that's not a problem if you don't mix them too carelessly. It was added to allow people to avoid the character constant 'f' which may not be available on some systems. (Actually, it's a side-effect of the equivalence of arrays and pointers.) [a]
So what is meant by the ''equivalence of pointers and arrays'' in C?
Arrays and PointersMuch of the confusion surrounding arrays and pointers in C can be traced to a misunderstanding of this statement. Saying that arrays and pointers are ''equivalent'' means neither that they are identical nor even interchangeable. What it means is that array and pointer arithmetic is defined such that a pointer can be conveniently used to access an array or to simulate an array. See similar questions...
So what is meant by the "equivalence of pointers and arrays" in C?
The C Language FAQMuch of the confusion surrounding pointers in C can be traced to a misunderstanding of this statement. Saying that arrays and pointers are "equivalent" does not by any means imply that they are interchangeable. lvalue of type array-of-T which appears in an expression decays (with three exceptions) into a pointer to its first element; the type of the resultant pointer is pointer-to-T. See similar questions...
What's the difference between "delete" and "undef" with %arrays?
Perl FAQary{'a'} is true $ary{'d'} is false defined $ary{'d'} is true defined $ary{'a'} is true exists $ary{'a'} is true (perl5 only) grep ($_ eq 'a', keys %ary) is true ary{'a'} is FALSE $ary{'d'} is false defined $ary{'d'} is true defined $ary{'a'} is FALSE exists $ary{'a'} is true (perl5 only) grep ($_ eq 'a', keys %ary) is true ary{'a'} is false $ary{'d'} is false defined $ary{'d'} is true defined $ary{'a'} is false exists $ary{'a'} is FALSE (perl5 only) grep ($_ eq 'a', keys %ary) is FALSE See similar questions...
What's the difference between a rowing machine and a real sculler?
Frequently Asked Questions at Little River MarineA quality rowing machine provides the same exercise as a rowing shell. The difference is largely that rowing a shell is outdoors and on the water. Rowing a real sculler doesn't feel like exercise, it feels like you're boating and having fun. For many people this is the difference between loving to exercise and boating it! See similar questions...
What is the difference between preplanned prostate implants and real-time prostate implants?
Bard UrologicalThe majority of physicians performing prostate seed implants in the United States do so using a preplanned procedure. Patients having a preplanned prostate seed implant procedure have a special ultrasound scan performed days to weeks before the actual seed implant is performed. Your Radiation Oncologist and Urologist then determine the areas of the prostate and surrounding structures that need to be treated, as well as those that need to be protected. See similar questions...
How can I implement sets and/or arrays of bits?
Infrequently Asked Questions in comp.lang.cWith linked lists of bitfields. You may also wish to simply use a large set of constants and some clever use of the switch statement, i.e. See similar questions...
What is the difference between real-time and real-tide?
DSM2 Real-time Modeling ConceptsReal-tide is a specific application of DSM2. Real-tide DSM2 simulations use real tidal data for the downstream tidal boundary condition at Martinez instead of 19-year mean tidal data. Real-tide simulations typically use 15-minute computational time steps. The input data typically can be 15 minutes, 1 hour, or daily. Real-time is used to describe either data or a simulation that is recent. See similar questions...
Can you give me any pointers to help explain it?
KSL International ArcheryOne of the more difficult points for a coach is to teach the archer the loading/transfer phase. Possibly the term holding, like anchor, is not the most perfect terminology as it can be interpreted that the draw is stopped, which it is not. Already at the set-up the draw scapula is set back and down and during the draw takes part of the load. See similar questions...
What are pointers and why would I use them ?
C++ cornerPointers are objects that hold a memory address. You can perform arithmetical operations on them (for instance, move the pointer to the immediate next memory location, etc), perform comparison operations between two pointers or dereference them. Dereferencing means accessing the pointed memory. Do not confuse the two: the arithmetical and comparison operations are made on the pointer itself. After dereferencing it, you are changing not the pointer, but the memory it points at. See similar questions...
What are smart pointers ?
C++ cornerSmart pointers are C++ objects that simulate simple pointers by implementing operator-> and the unary operator*. In addition to supporting pointer syntax, they also provide useful such as memory management and consequently, memory ownership. Most smart pointers do not provide the simple pointer arithmetic operations. The C++ standard provides a single implementation of smart pointers, namely std::auto_ptr. It provides memory management and it owns the memory it holds. See similar questions...
What are domain pointers?
Crush Technology, Inc - INTERNET SOLUTIONSCrush Technology charges clients a once-off $7 fee to setup domain pointers. This is a second domain that points to the exact same site as your original domain (note you cannot point a domain pointer to a subdirectory). A subdomain is for example http://www.domainpointer.com which loads the same site as http://www.yourdomain.com. See similar questions...
Have any pointers for a novice?
Dennis Glennon Photography Frequently Asked QuestionsFAQsI've created a page of 'Photo Tips' which I hope will be helpful to you, and a FREE E-BOOK Collection, as well as purchasable, expanded versions See similar questions...
Is this even for real!?
Aunt Julie Pet Communicator - FAQsYes, it's for real and it happens all the time, but rather randomly. It's not generally structured or monitored, and no, chances are you won't trust your instincts well enough to know what to do. There is no guarantee that your pet will come back to you if they are uncertain about things. Princess may not even know what to do, whether the time is right for you, whether you still want her, what effects seeing her old toys may have on her, etc. See similar questions...
Can objects be used in place of arrays? Q: What's the difference between equals and ==?
Code Style: Java objects frequently asked questions (FAQ)The Java == operator is used to compare primitive values such as int, long and boolean for equality; whether the variables, values or expression on either side of the operator equate to the same value. See similar questions...
What is the difference between real and synthetic wood?
ACCESSORIES R US Service 1Real wood veneers are manufactured from very thin sheets of genuine wood, whereas the synthetic veneer is an embossed image that resembles wood. The synthetics are remarkably similar in appearance to real wood. See similar questions...
What is the difference between Real-Time and Digest?
Jensen FAQ - Mailing ListReal-Time format (sometimes referred to at list format) means that you receive each message individually. If sixteen messages are sent to the list in a particular day, then you'll receive sixteen individual messages. By switching to the Digest format, you elect to receive a bunch of messages all bundled into one large message. Instead of receiving sixteen individual messages (above example), you would receive just one large digest issue for that day. Switching formats is easy. See similar questions...
What is the real difference between a buy-out and porting?
Nashua Mobile Portal :: Portability FAQ's :: publi...With a buy out, your Recipient Service Provider can pursue your business aggressively by way of offering discounts, reduced subscriptions, phenomenal service levels etc. A buy-out can occur at any stage within your 24-month subscriber contract and as long as it is commercially viable for the Recipient Service Provider, you can cancel your contract with your Donor Service Provider and move to the Recipient Service Provider who has bought out your line. See similar questions...
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