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List of issues#1798 Difference between opcodes in AS3
Author: 
Kuroneko
KuronekoDate created:
Type: question
Visibility: Everybody
Assigned to:
Labels: AS3
State: closed 
What's difference between pushint null and pushint 0?
pushnull — var name:int = null
pushint null — var name:int = 0
pushint 0 — var name:int = 0
pushnull pushes value "null" on stack
pushint generally searches values in the abcs int table,
pushint null means pushint [0] - the value at index 0 in the int table, it's usually
zero.
Did you see this case somewhere? I think it's pretty unusual.
pushint 0 means really push the value 0, wherever it is in the int table.
You can see tables of ints in the leftbottom section of the UI on the "Constants" tab.
State: new→opened
State: opened→closed