inferForeachAggregate

Figure out what is being foreach'd over by looking at the ForeachAggregate.

bool

(

)

Parameters

sc: Type: Scope*
context
isForeach: Type: bool
true for foreach, false for foreach_reverse
feaggr: Type: Expression
ForeachAggregate
sapply: Type: Dsymbol
set to function opApply/opApplyReverse, or delegate, or null. Overload resolution is not done.

Type: bool

true if successfully figured it out; feaggr updated with semantic analysis. false for failed, which is an error.