Error 3 Error C2166 L-value Specifies Const Object
Programming Boards C++ Programming Error C2166: l-value specifies const object Getting started with C or C++ | C Tutorial | C++ Tutorial | C and C++ FAQ | Get a compiler | Fixes for common problems Thread: Error C2166: l-value specifies const object Thread Tools Show Printable Version Email this Page… Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 05-19-2011 #1 plus.c.plus View Profile View Forum Posts Registered User Join Date Mar 2011 Posts 8 Error C2166: l-value specifies const object Code: 65 int BasicMonster::calculatePower() const 66 { 67 if (weight > stamina) 68 power -= (weight - stamina) * 2; 69 70 if (health <= 0) 71 power = 0; 72 else if (health > 100) 73 power += (health - 100) * 3; 74 else if (health < 10) 75 power *= health / 10.0; 76 77 return power; 78 } Error 1 error C2166: l-value specifies const object 68 Error 2 error C2166: l-value specifies const object 71 Error 3 error C2166: l-value specifies const object 73 Error 5 error C2166: l-value specifies const object 75 Please, could you tell me what I have to write to not have errors? 05-19-2011 #2 tabstop View Profile View Forum Posts and the Hat of Guessing Join Date Nov 2007 Posts 14,185 "const" means "constant" which means "does not change". So since you have this function marked as const (on line 65), that means you cannot change any members of the class. (In other words, if this is supposed to change some member of the class, then it cannot be a const function.) 05-19-2011 #3 plus.c.plus View Profile View Forum Posts Registered User Join Date Mar 2011 Posts 8 Thank you!!! 05-19-2011 #4 Elkvis View Profile View Forum Posts Registered User Join Date Oct 2006 Posts 3,312 if you need to change those members from inside const functions, you can mark them as mutable. 05-19-2011 #5 Elysia View Profile View Forum Posts C++まいる!Cをこわせ! Join Date Oct 2007 Posts 24,467 That is dangerous. You should really think it through if it makes sense to do that. For most things, it simply doesn't make sense. The only exception I can think of is thread safety.
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up l-value specifies const object while using std::map up vote 7 down vote favorite 1 I'm trying http://cboard.cprogramming.com/cplusplus-programming/138140-error-c2166-l-value-specifies-const-object.html to use std::map like in example below: #include
here for a quick overview of the site Help Center Detailed http://stackoverflow.com/questions/13231103/constness-issue-when-inserting-into-an-stdmap answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the http://postgresql.nabble.com/Errors-building-on-windows-td5912598.html company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss error 3 Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up constness issue when inserting into an std::map up vote 2 down vote favorite I'm experiencing an constness issue when attempting error 3 error to insert a pair into a map. The compiler error is: c:\program files (x86)\microsoft visual studio 11.0\vc\include\xutility(2089) : see reference to function template instantiation 'std::pair<_Ty1,_Ty2> &std::pair<_Ty1,_Ty2>::operator =(const std::pair<_Ty1,_Ty2> &)' being compiled 1> with 1> [ 1> _Ty1=const Assets::AssetId, 1> _Ty2=std::shared_ptr
| Threaded Open this post in threaded view ♦ ♦ | Report Content as Inappropriate ♦ ♦ Errors building on windows I am getting the following errors:loadlib.c(114): error C2373: '__pfnDliFailureHook2': redefinition; different type modifiersC:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\delayimp.h(141): note: see declaration of '__pfnDliFailureHook2'loadlib.c(115): error C2373: '__pfnDliNotifyHook2': redefinition; different type modifiersC:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\delayimp.h(134): note: see declaration of '__pfnDliNotifyHook2'loadlib.c(129): error C2166: l-value specifies const objectloadlib.c(190): error C2166: l-value specifies const objectloadlib.c(198): error C2166: l-value specifies const objectloadlib.c(229): error C2166: l-value specifies const objectloadlib.c(237): error C2166: l-value specifies const objectWhich appear to be from:// Prior to Visual Studio 2015 Update 3, these hooks were non-const. They were// made const to improve security (global, writable function pointers are bad).// If for backwards compatibility you require the hooks to be writable, define// the macro DELAYIMP_INSECURE_WRITABLE_HOOKS prior to including this header and// provide your own non-const definition of the hooks.ExternC#ifndef DELAYIMP_INSECURE_WRITABLE_HOOKSconst#endifPfnDliHook __pfnDliNotifyHook2;// This is the failure hook, dliNotify = {dliFailLoadLib|dliFailGetProc}ExternC#ifndef DELAYIMP_INSECURE_WRITABLE_HOOKSconst#endifPfnDliHook __pfnDliFailureHook2;It would appear we need to define DELAYIMP_INSECURE_WRITABLE_HOOKS. Is there another way to set the hook to NULLDave Cramer Inoue, Hiroshi-2 Reply | Threaded Open this post in threaded view ♦ ♦ | Report Content as Inappropriate ♦ ♦ Re: Errors building on windows Hi Dave, Thanks for the report. I would fix it. regards, Hiroshi Inoue On 2016/07/20 0:43, Dave Cramer wrote: > I am getting the following errors: > > loadlib.c(114): error C2373: '__pfnDliFailureHook2': redefinition; > different type modifiers > C:\Program Files (x86)\Microsoft Visual Studio > 14.0\VC\INCLUDE\delayimp.h(141): note: see declaration of '__pfnDliFailur > eHook2' > loadlib.c(115): error C2373: '__pfnDliNotifyHook2': redefinition; > different type modifiers > C:\Program Files (x86)\Microsoft Visual Studio > 14.0\VC\INCLUDE\delayimp.h(134): note: see declaration of '__pfnDliNotify > Hook2' > loadlib.c(129): error C2166: l-value specifies const object > loadlib.c(190): error C2166: l-value specifies const object > loadlib.c(198): erro