+=
val incNo documentation available
Bytecode
Probably only interesting to you if you want to understand more about the Nujel VM or care very much about performance.
( 0 ($push/val 'set!)) ( 2 ($get/val 'val)) ( 4 ($push/val '+)) ( 6 ($get/val 'val)) ( 8 ($get/val 'inc)) ( 10 ($push/nil)) ( 11 ($cons)) ( 12 ($cons)) ( 13 ($cons)) ( 14 ($push/nil)) ( 15 ($cons)) ( 16 ($cons)) ( 17 ($cons)) ( 18 ($ret))