Subway questions

• c++: "double free or corruption" for global extern variable?
• Create binary file in python
• c++: Search in a map without using an iterator
• SNMP MIB: revision for last update is missing
• What is boost::optional efficiency?
• c++: alternative to 'std::is_fundamental'?
• c++ std Copying a list to map
• Chrome extension: Multiple tabs in popup window
• c++ visitor pattern: Why should every derived visited implement Accept()?
• C: Most efficient way to set all bits in a range within a variable

Subway answers