Function opcode2Over

txscript/opcode.go:1251–1253

opcode2Over duplicates the 2 items before the top 2 items on the data stack. Stack transformation: [... x1 x2 x3 x4] -> [... x1 x2 x3 x4 x1 x2]

(op *opcode, data []byte, vm *Engine)

//
// Stack transformation: [... x1 x2 x3 x4] -> [... x1 x2 x3 x4 x1 x2]
func opcode2Over(op *opcode, data []byte, vm *Engine) error {
	return vm.dstack.OverN(2)
}

// opcode2Rot rotates the top 6 items on the data stack to the left twice.
//