In this video we'll extend the Fang compiler by adding support for let-bound variables to the codegen and the VM. 00:00 - Intro 00:44 - Plan 00:49 - Environment 01:59 - ConstPool: motivation 02:54 - ConstPool: implementation 05:12 - Var bytecode 05:57 - Bind bytecode 11:23 - Environment support in the VM 18:19 - Running and debugging the VM 20:37 - Summary