2013/9/19 Mark S. Miller <[email protected]> > Not sure I understand this. Would the same [[Get]] + [[Invoke]] behavior > be caused by the following JS pattern: > > if (base[index]) { return base[index](...args); } > > as opposed to the [[Get]] + [[Call]] behavior caused by the pattern > > if ((f = base[index])) { f.call(base, ...args); } > > (aside from the difference between .call and .[[Call]]) ? > > Is it a problem that in the first pattern, the two invocations of > base[index] might return different things? >
Not necessarily a problem, but yes, that is the observable difference (or the two accesses might return the same function, but meanwhile mutate some other state).
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