James Bond questions

• Is there any way to let MySQL server 'push' DB updates to a client program?
• How to get the return code of make in a shell script?
• Anyone uses boost::multiindex as a one-table database?
• how to return a null iterator in c++?
• Is there any opensource high-performance IPC-like msg bus library in c++?
• How to write ONE line of command that scp all the sub-directories in a directory to a remote machine
• Microsecond difference between two datetime.time columns in python pandas?
• How to get the pointer to a shared_ptr?
• is there an equivalent of data-frame in OCaml?
• python pandas datetime.time - datetime.time

James Bond answers