Why am I getting an undefined reference error in my code?
1289
Why can templates only be implemented in the header file?
138830
What does `invalid initialization of non-const reference` mean?
64332
avoiding null reference exceptions
111498
C++ inlining class methods causes undefined reference
114816
Is null reference possible?
2831
Undefined reference to vtable
58542
What is a reference variable in C++?
16027
Uncaught ReferenceError: $ is not defined?
27136
Reference: What is variable scope, which variables are accessible from where and what are "undefined variable" errors?
144673
Why does this JavaScript code print "undefined" on the console?
152538
What is causing undefined control sequence?
19635
"Char cannot be dereferenced" error
99296
Why can't I make a vector of references?
816
What is the difference between a variable, object, and reference?
131864
Member '' cannot be accessed with an instance reference
78452
LaTeX Warning: There were undefined references
116133
Why do I get an "undefined reference" link error for a static member variable?