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Re: how to create a simple elevator simulation? 1 Week Ago by trueframe To make a basic elevator simulation, first, identify the floors and the elevator's capacity. Then, use loops and conditionals in programming to mimic its movement. Include buttons for users to call the elevator and select floors. Test thoroughly for accuracy. GCC Fails to Recognize Parameters 2 Months Ago by snah19 …quot; /** @name Logging context. */ /*@{*/ static const char *urlcontext_to_name(void *ptr) { URLContext *h … }, 0, INT64_MAX, AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_DECODING_PARAM }, { NULL } }; const AVClass ffurl_context_class = { // L64:15 .class_name = "URLContext… Re: Seeking Help for Creating a Circle Generator Tool 2 Months Ago by jackwells …: 50%; background-color: lightblue; } function generateCircle() { const radius = document.getElementById('radius').value; const diameter = radius * 2; const circle = document.getElementById('circle'); circle.style… Re: How can I create a meme generator using js canvas? 2 Months Ago by jessicaboland … rather than using an overlay div. See Example: const canvas = document.getElementById('yourCanvasId'); const ctx = canvas.getContext('2d'); // User input and rendering… const userInput = 'Your Text Here'; ctx.fillText(userInput, x, y); // Initial … Re: GCC Fails to Recognize Parameters 2 Months Ago by Reverend Jim I can't offer any suggestions other than to just download the compiled app for your system instead of building it yourself. Re: GCC Fails to Recognize Parameters 2 Months Ago by rproffitt Here's another problem. When we change the OS not only must we setup the compiler, environment and such but sometimes an OS API could be deprecated or removed. You made mention of a possible OS change so that's a possibility. You obtained this code from somewhere. Go back there and see if they updated it for your new OS. Re: GCC Fails to Recognize Parameters 1 Month Ago by toneewa While I haven't used DJGPP for a couple decades, I decided to install the ffmpeg library and do a test program another way. For me, the declarations worked changing: #include "os_support.h" #include "avformat.h" #include "internal.h" #if CONFIG_NETWORK #include "network.h" #… Re: Const and iterators 13 Years Ago by gerard4143 Const iterators are used to indicated that the underlying object data members will not change. Re: const 13 Years Ago by mike_2000_17 … int hour; int minute; public: int getHour() const; //const means that reading the value of hour does not change…lt;< value.getTime(); //however, calling the non-const method will not be allowed: out << value…situations. However, many beginners mistakenly think that const-correctness is restrictive and annoying, but that is… Re: const 13 Years Ago by mike_2000_17 … class and only look at the interface (including the const qualifiers which are an integral part of the interface of…data should it output or modify (and that's where const comes in). After, the implementation can begin and your … is. It simply makes a data member immune to the const qualifier, like this: [CODE] class Foo { private: mutable int… const 13 Years Ago by smcguffee … that prompted my questions: "Accessors should be const methods at the very least, because the object state…cv-qualifiers errors that I had because of a const that was introduced through netbeans automatically generating getter functions… above, as was automatically done for me, that const is something that should be used. Does anyone have… Re: const 13 Years Ago by Fbody …architecture" is both safe and fast. You use const several different ways under different circumstances to produce [B]…want to make it safe, you use a const reference. A const reference is declared just like a reference except …you add const to the declaration. Adding const tells the compiler that you are passing… Re: const 13 Years Ago by smcguffee … bit hesitant. Suppose I write a class that has a const variable parameter in a method function. Then suppose the class… of work and extra man hours to undo all the const 'ing that had been incorporated throughout all of the algorithms… would not have expected when I start writing code. Would const 'ing still be recommended even if such a case might… Re: const 13 Years Ago by smcguffee … variables. Thus, even though Net Beans defaulted to putting a const in a getter function for me, and there is a… place for const types; the place for const is not in classes that are intended for… all variables, even inside getter functions. On the other hand, const is best used in classes where the function of the… Re: const 13 Years Ago by Fbody … to simply call object.sortList() (which by nature is non-const and I suspect you already have) then call object.getList…() (which would be const and I suspect you also may already have)? Re: const 13 Years Ago by Fbody It is appropriate to have const getters, you just need to call them properly. A getter method should rarely do more than simply return some value. If there are some calculations that require temporary values, then those temporary values should be stored in local variables rather than in member variables. Re: const 13 Years Ago by smcguffee Good call--I like that point--there should be a const getter called inside any getter. I'll have to start doing that because it will definitely help keep me more organized. Const methods to read private data members of a class 9 Years Ago by JayGarxP …true if found bool Player::Search(const char * playa) const { bool foundPlayer = false;… char* GetName() const; int GetGrade() const; double GetGPA() const; bool Search(const char*) const; void Display() const; //Keeps track of… Const Question - Why is this happening? 15 Years Ago by VernonDozier …passed to a copy constructor, and the word [ICODE]const[/ICODE] on line 40: [code=cplusplus] #include…MyClass& f) { cout << "In non-const copy constructor pre-mutation: f.x = " <<….x = 8; cout << "In non-const copy constructor post-mutation: f.x = " <… Re: Const Question - Why is this happening? 15 Years Ago by Sci@phy …but it's irrelevant) will not change! But, that const keyword is irrelevant of calling constructor. When you write: …[CODE=cplusplus]MyClass (const MyClass& f)[/CODE] You say to compiler: This… constructor is going to GET object of type: const MyClass! When you write inside a main function: [… Re: Const Question - Why is this happening? 15 Years Ago by VernonDozier … if "some_other_MyClass_obj" is of type const MyClass or simply MyClass, and then calls proper…write your copy constructor as such: [code] public MyClass (const MyClass& f) { // code } [/code] and… like?" I think I answered: [code] public MyClass (const MyClass& f) { // code } [/code] as opposed… Re: Const Question - Why is this happening? 15 Years Ago by vijayan121 …// overload resolves to exact match : MyClass::MyClass( MyClass& ) const MyClass& g = f ; Func (g); // make copy of… g is not a modifiable lvalue // call MyClass::MyClass( const MyClass& ) to make the copy }[/code] the copy… constructor that takes a non-const object as argument is used to make copies of … Const passing problem 11 Years Ago by Psyho …{ public: DirectionSequence(); void push_back(const D ad); void change_direction(); const D at(const int vp); int size(); private…."; } template <class T> const D at(const int vp) { return (v[vp]); } … Re: Const Question - Why is this happening? 15 Years Ago by VernonDozier …my non-member function to this: [code] void MyClass Func (const MyClass f) { f.x = 10; f.DoSomething (f…it IS changed when the function calls the non-const copy constructor. [code] MyClass ([COLOR="Red… f[/COLOR]) { cout << "In non-const copy constructor pre-mutation: f.x = " <… Re: Const Question - Why is this happening? 15 Years Ago by Sci@phy …: [CODE=cplusplus] void MyClass Func (const MyClass f) //or even simply: const MyClass f(some_MyClass_obj); [/CODE] And let… checking if "some_other_MyClass_obj" is of type const MyClass or simply MyClass, and then calls proper constructor… function. He doesn't care about line "const MyClass f", because after the "f&… Re: Const Question - Why is this happening? 15 Years Ago by ArkM …] A compiler-generated (default) copy constructor always has const X& parameter. Some careful compilers print warnings if… binding). So it's possible to modify a non-const only ARGUMENT object (initializer) via X& copy…: [code=cplusplus] void F(X x) { ... } void F(const X x) { ... } [/code] All static member functions are ordinar… const char* and char* problem 13 Years Ago by chamika.deshan …saying. [QUOTE]Error 1 error C2664: 'const char *TiXmlElement::Attribute(const char *) const' : cannot convert parameter 1 from '… element->Attribute definition [CODE]const char* Attribute( const char* name ) const;[/CODE] But it gives me …parameter 1 from 'char *(__cdecl *)(void)' to 'const char *' [/QUOTE] error Could you please help … Re: Const passing problem 11 Years Ago by mike_2000_17 … declaration: class DirectionSequence { //... int size() const; // notice the 'const' here, // it means this function will … other functions. // now, the size function: int size() const { return tn; }; private: //.. only the private data members… Re: Const Question - Why is this happening? 15 Years Ago by Sci@phy … very interesting. Well, first thing, i managed to call const constructor by doing this to main: [CODE=cplusplus] int… main () { const MyClass f(4); cout << "In main … [/CODE] So, if u pass const object to Func, it will obviously trigger const constructor. I'll post if i find… Re: Const Question - Why is this happening? 15 Years Ago by VernonDozier ….c++/browse_thread/thread/16f1dd6dc3cf8fed/1d9e5fea271ef312?lnk=st&q=non-const+copy+constructor+group%3Acomp.lang.c%2B%2B#1d9e5fea271ef312[/url…?[/QUOTE] Thanks. Well it shows an example of a const and non-const constructor, so that's relevant. I'm not using…