Some errors on official SFML book code in github

[PewPew]

Have not read the book yet. I just want to try if every code is working before reading the book.

Turns out i got 2 unresolved externals.

Here are they

Error   2       error LNK2019: unresolved external symbol "class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __cdecl toString<__int64>(__int64 const &)" (??$toString@_J@@YA?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@AB_J@Z) referenced in function "private: void __thiscall Game::updateStatistics(class sf::Time)"

Error   1       error LNK2019: unresolved external symbol "class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __cdecl toString<unsigned int>(unsigned int const &)" (??$toString@I@@YA?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@ABI@Z) referenced in function "private: void __thiscall Game::updateStatistics(class sf::Time)"      

[Nexus]

This hasn't happened to us, is this the 1:1 code from the latest Git revision?

What compiler and version? How is the file StringHelpers.inl included at that place?

[PewPew]

 Im not really sure what version But here is the link

https://github.com/SFML/SFML-Game-Development-Book

and for my compiler. I am using VS2013

[PewPew]

Could it be that this is because of my compiler?

Cause I just copy pasted every code on repo chap3 World..

[zsbzsb]

Since no one replied... where exactly did it say to copy and paste the code into a project?