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c++ Programming Glossary: constantwhat is the difference between const int*, const int * const, int const * http://stackoverflow.com/questions/1143262/what-is-the-difference-between-const-int-const-int-const-int-const you can't change it later foo is a variable pointer to a constant int. That is you change what you point to but not the value..
What is the difference between NULL, '\0' and 0 http://stackoverflow.com/questions/1296843/what-is-the-difference-between-null-0-and-0 share improve this question Null Pointers The integer constant literal 0 has different meanings depending upon the context.. in which it's used. In all cases it is still an integer constant with the value 0 it is just described in different ways. If.. in different ways. If a pointer is being compared to the constant literal 0 then this is a check to see if the pointer is a null..
How come a non-const reference cannot bind to a temporary object? http://stackoverflow.com/questions/1565600/how-come-a-non-const-reference-cannot-bind-to-a-temporary-object the lifetime of the object cannot be the cause because constant reference to an object is not prohibited by C Standard. It is.. C Standard. It is clear that the temporary object is not constant in the sample above because calls to non constant functions.. is not constant in the sample above because calls to non constant functions are permitted. For instance ref could modify the temporary..
Variable length arrays in C++? http://stackoverflow.com/questions/1887097/variable-length-arrays-in-c constructs The C standard states that array size must be a constant expression 8.3.4.1 Yes of course I realize that in the toy example..
Is it better in C++ to pass by value or pass by constant reference? http://stackoverflow.com/questions/270408/is-it-better-in-c-to-pass-by-value-or-pass-by-constant-reference it better in C to pass by value or pass by constant reference Is it better in C to pass by value or pass by constant.. reference Is it better in C to pass by value or pass by constant reference I am wondering which is better practice. I realize.. wondering which is better practice. I realize that pass by constant reference should provide for better performance in the program..
What are all the common undefined behaviour that a C++ programmer should know about? [closed] http://stackoverflow.com/questions/367633/what-are-all-the-common-undefined-behaviour-that-a-c-programmer-should-know-ab of the specified escape codes in a character or string constant this is implementation defined in C 11 . Exceeding implementation..
When and why will an OS initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete? http://stackoverflow.com/questions/370195/when-and-why-will-an-os-initialise-memory-to-0xcd-0xdd-etc-on-malloc-free-new in vc crt src dbgheap.c The following values are non zero constant odd large and atypical Non zero values help find bugs assuming.. help make bugs reproducable . Of course it is bad if the constant filling of weird values masks a bug. Mathematically odd numbers..
New to C++. Question about constant pointers http://stackoverflow.com/questions/1110331/new-to-c-question-about-constant-pointers it initally points to cannot change value. const char p Constant pointer to a char The pointer cannot be changed to point to.. but the char it points to can change value. char const p Constant pointer to a constant char The pointer cannot be changed to..
How to convert std::string to LPCSTR? http://stackoverflow.com/questions/1200188/how-to-convert-stdstring-to-lpcstr gives you a const char which is an LPCSTR Long Pointer to Constant STRing means that it's a 32 bit pointer to a 0 terminated string..
What is the state of C++ refactor support in Eclipse? http://stackoverflow.com/questions/130913/what-is-the-state-of-c-refactor-support-in-eclipse new refactorings Declare Method Extract Baseclass Extract Constant Extract Method Extract Subclass Hide Method Implement Method..
Difference between `constexpr` and `const` http://stackoverflow.com/questions/14116003/difference-between-constexpr-and-const speaking very simple types typically scalars or aggregates Constant expressions As said above constexpr declares both objects as..
How do I properly call the CopyFile function in Visual C++? http://stackoverflow.com/questions/15458312/how-do-i-properly-call-the-copyfile-function-in-visual-c parameters to constant references to std wstring objects. Constant references work well here since you're not going to be changing..
Difference between Static variable declared in different scopes http://stackoverflow.com/questions/18140552/difference-between-static-variable-declared-in-different-scopes is performed before any other initialization takes place. Constant initialization 3.6.2 of a block scope entity with static storage..
What does LPCWSTR stand for and how should it be handled with? http://stackoverflow.com/questions/2230758/what-does-lpcwstr-stand-for-and-how-should-it-be-handled-with improve this question LPCWSTR stands for Long Pointer to Constant Wide String . The W stands for Wide and means that the string..
Constant value in conditional expression http://stackoverflow.com/questions/224421/constant-value-in-conditional-expression value in conditional expression In a coding style question..
Importance of a singlecolon “:” in C++ [duplicate] http://stackoverflow.com/questions/2445330/importance-of-a-singlecolon-in-c are several reasons for doing so via the initializer list Constant pointers or references cannot be initialized from the body of..
const pointer assign to a pointer http://stackoverflow.com/questions/3316562/const-pointer-assign-to-a-pointer between constant pointer and pointer to constant. Constant pointer is a pointer a number memory address that cannot be..
When and why will an OS initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete? http://stackoverflow.com/questions/370195/when-and-why-will-an-os-initialise-memory-to-0xcd-0xdd-etc-on-malloc-free-new Non zero values help find bugs assuming zero filled data. Constant values are good so that memory filling is deterministic to help..
http://stackoverflow.com/questions/4691332/constant-member-functions Member Functions After reading this it is my understanding..
about “int const *p” and “const int *p ” http://stackoverflow.com/questions/5268521/about-int-const-p-and-const-int-p int const ptr num ptr 100 However there is a third kind. Constant pointer to a constant location which can neither point to a..
http://stackoverflow.com/questions/7065200/constexpr-question-why-do-these-two-different-programs-run-in-such-a-different share improve this question joe is an Integral Constant Expression it must be usable in array bounds. For that reason..
What is stored on heap and what is stored on stack? [closed] http://stackoverflow.com/questions/8700491/what-is-stored-on-heap-and-what-is-stored-on-stack attempt to write in this area leads to undefined behavior. Constant strings may be placed either in code or data area and that depends..
C++ std::string conversion problem on Windows http://stackoverflow.com/questions/874433/c-stdstring-conversion-problem-on-windows returns a const char . A LPCWSTR is a Long Pointer to a Constant Wide String or in other words const wchar_t . So you have a..
How can I embed unicode string constants in a source file? http://stackoverflow.com/questions/442735/how-can-i-embed-unicode-string-constants-in-a-source-file in our applications so it's existing code #define UNICODE_CONSTANT CONSTANT towstring CONSTANT wstring towstring LPCSTR lpszValue.. so it's existing code #define UNICODE_CONSTANT CONSTANT towstring CONSTANT wstring towstring LPCSTR lpszValue wostringstream.. existing code #define UNICODE_CONSTANT CONSTANT towstring CONSTANT wstring towstring LPCSTR lpszValue wostringstream os os lpszValue..
error LNK2019: unresolved external symbol _main referenced in function ___tmainCRTStartup http://stackoverflow.com/questions/4845410/error-lnk2019-unresolved-external-symbol-main-referenced-in-function-tmainc main_savitch_3 class sequence public TYPEDEFS and MEMBER CONSTANTS typedef double value_type typedef std size_t size_type static.. void attach const value_type entry void remove_current CONSTANT MEMBER FUNCTIONS size_type size const bool is_item const value_type..
Program crashes when trying to set a character of a char array http://stackoverflow.com/questions/5007369/program-crashes-when-trying-to-set-a-character-of-a-char-array char sweat Sweater sweat 0 ' 0' Here sweat points to a CONSTANT data. Sweater is const literal data residing somewhere in read.. do sweat 0 ' 0' it tries to change first character of the CONSTANT data. Hence the error. By the way a good compiler should give.. an array of char is created copying the data from the CONSTANT data which is Sweater that array's element itself is modifiable..
http://stackoverflow.com/questions/8565637/make-a-vortex-in-box2d getRelativePosition platformBody targetBody true speed CONSTANT CONSTANT 1.8 this is to account for the targetBody attrition.. platformBody targetBody true speed CONSTANT CONSTANT 1.8 this is to account for the targetBody attrition so it..
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