Rouki questions

• Union of two (irregular) Context Free Language results a Regular Language?
• What is the concatenation of this language with itself?
• PAE in x86-64 bit processors - Linux kernel
• StringBuffer and String pool
• Misunderstanding about ostream class and operator <<
• x86-64 canonical address?
• Why does statically accessing class data members via pointers returns 1?
• Using unsigned int vs. checking if negative

Rouki answers