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Undefined Reference To Static Const Member

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Military Tank drone, why are they not common yet? share|improve this answer answered Jun 21 '15 at 16:26 weavr 1644 I'm sure that the TemplateClass has not .cpp file. Or is this something I shouldn't be doing for some reason? float f = FNUMBER + 3.2; [...] } void method2(){ //Use the static const variable //If I do not access this variable, there is no problems. navigate here

Truth Stone: Effects on the justice system, and criminal world Why are some people so paranoid about music theory? I got undefined error only for the third method, even I am using all three methods. All Aboard the Kolmogorov Complexity Train Is it possible that the last piece the ant has eaten is the central one? How to set up love interests for player characters How much of my income should I put towards paying off student loans vs saving for a house? http://stackoverflow.com/questions/18614364/link-errors-on-static-const-char

Undefined Reference To Static Const Member

Why is water-contaminated fuel bad, but water-injection is not? C99 has a feature that's like it but not exactly the same rules (i'm not sure of the details). will not guess their template argument... –Tomasz Gandor Mar 4 '14 at 15:25 add a comment| up vote 5 down vote Try writing it as struct Elem { static const int Then I changed the way I initialize the static variable by not initializing in the class definition: static const char gapchar; template const char Strange::gapchar='-'; This solved the problem.

So how do we determine if a variable is odr-used? more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed James Potter and the Cloak of Invisibility - Why didn't he use it to hide the family from Voldemort? C++ Extern Const share|improve this answer answered Apr 1 '11 at 1:16 Snowman 1,78921429 That doesn't solve the initialization problem, though.

What if passport is lost and home country has no diplomatic presence? C++ Static Constexpr Undefined Reference std::min takes it's parameters by reference, so they are odr-used. Backdoor account in passwd file The eruption of Eyjafjallajökull? More hints more hot questions question feed lang-cpp about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation

I modified this example from my code. Undefined Reference To Static Variable C++ But you only declare kConst and don't define it. Because as is, this doesn't look minimal or verifiable (given the syntax errors Arnon Zilca just pointed out). –Cornstalks Jun 21 '15 at 16:17 SIntax erros fixed. As the other answer suggests, const in C++ implies static.

C++ Static Constexpr Undefined Reference

The original code would also work if there was a definition, just like the one here but without the initializer. –Pete Becker Jun 6 '13 at 17:57 add a comment| up Pomegranate Chicken What "actually" happens at T-minus-0 Why is water-contaminated fuel bad, but water-injection is not? Undefined Reference To Static Const Member Who is the tallest? Undefined Reference To Const Hot Network Questions What is this aircraft with elaborate folding wings?

share|improve this answer answered Nov 4 '11 at 23:22 Kerrek SB 289k42529763 33 That looks weird... check over here A variable whose name appears as a potentially-evaluated expression is odr-used unless it is an object that satisfies the requirements for appearing in a constant expression (5.19) and the lvalue-to-rvalue conversion A paper I received to review has (independently) duplicated work that we are writing up. asked 3 years ago viewed 3010 times active 5 months ago Blog How Do Software Developers in New York, San Francisco, London and Bangalore… Linked 160 Undefined reference to static class C++ Static Const Linker Error

It could also be a bug. –FailedDev Nov 4 '11 at 23:19 @Pubby: Question: Which translation unit will it be defined in? share|improve this answer answered Mar 22 '11 at 13:31 TonyK 11.4k32055 add a comment| up vote 1 down vote I think this artefact of C++ means that any time that Bar::kConst Problem: Violates the one definition rule. his comment is here Related 253Storing C++ template function definitions in a .CPP file406Use 'class' or 'typename' for template parameters?39Template static variable2Defining static const variables of a template class3Where to define static const member variables

A static library is only an aggregate of object files. Undefined Reference To Function C++ Anyway thanks for the answer! –Clodéric Jan 9 '14 at 15:59 1 ...and std::min / std::max, which led me here! –sage Mar 2 '15 at 4:39 "AFAIK GCC Thus its definition is required. –0x499602D2 Mar 3 '15 at 18:56 1 @Tafuri: this is just a minimal example to reproduce a more complicated issue in a bigger project. –Vittorio

This still seems to me like a stupid hack that just adds needless complexity to the language definition!!!

In the source file at global scope, do const char* ClassName::ACH_DEBIT = "ach_debit"; share|improve this answer answered Sep 4 '13 at 12:54 Mahesh 25k105887 add a comment| up vote 1 down It does not make sense to not initialize it in the structure (class) if you can (know the value at that point) because otherwise all the possible optimizations would be lost. Why doesn't my (battery-powered) light work in the cold? Not the answer you're looking for?

Can you benefit from a second casting of Armor of Agathys while the first is still active? And you probably want to enforce this by making ACH_DEBUG const (rather than just its contents). Since it has a template object, I'm defining all methods in the .h file (no .cpp). weblink How to describe very damaging natural weapon attacks from a weak creature Listing sequence with rules more hot questions question feed lang-cpp about us tour help blog chat data legal privacy

Answer: Everything that include the header. What went wrong and what could have been done better? Why are you forwarding a value to cout? –Tafuri Mar 3 '15 at 18:56 2 You're binding a reference to someString which odr-uses it. Join them; it only takes a minute: Sign up C++: link error with static const variables in template class up vote 0 down vote favorite I'm developing a class that receive

How can Data be property of Starfleet? Browse other questions tagged c++ char const or ask your own question. Anyway you need to define (implement) the static member somewhere, for example in the cpp file: const char* MyClass::ACH_DEBIT = "ach_debit"; share|improve this answer edited Sep 4 '13 at 16:05 answered Join them; it only takes a minute: Sign up Undefined reference to static const int up vote 48 down vote favorite 6 I ran into an interesting issue today.

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