Question

I’ve seen some code similar to:

nodeIds = Framework.getDataAsList(key) or []

What would be a full fragment of code it translates to? Is the function output being checked for False or for None outcome? Is there some similar Java syntax for this?

Answer 1

there is pseudocode:

def nonZero(var):
   if isinstance(var,collection): 
     if len(collection) == 0 : return False
     else: return True
   if isinstance(var, number):
     if number == 0 : return False
     else: return True
   if isinstance(var, boolean): return var
   if isinstance(var, NoneType): return False
   if hasattr(var,'__nonzero__'): return var.__nonzero__()


nodeIds = Framework.getDataAsList(key)
if not nonZero(nodeIds) : nodeIds = []