Marty Wallace questions

• Git - merge from specific commit onwards
• PHP - instanceof v === null
• Order flat structure into tree knowing only parents
• Extend validation.js and validate single elements
• Python class members confusion
• python trim number without converting to string first
• Golang - mapping an variable length array to a struct
• Python printing function gets unexpected output at interpreter?
• Cross domain cookies - it must be possible [duplicate]
• Git workflow for getting to first release

Marty Wallace answers