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  Eclipse compiler oddity  (Read 1819 times)
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Offline Riven
Administrator

« JGO Overlord »


Medals: 1369
Projects: 4
Exp: 16 years


Hand over your head.


« Posted 2007-03-02 15:36:07 »

Shouldn't this code:

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for (String line : conn.list())
{

}


be equal to:

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conn.list();


?


It's not: conn.list() isn't even invoked in the enhanced-for loop Shocked


...


I know this is bad design (doing nothing with items in an iterator, shouldn't have any side-effects) but it should be the equivalent of:

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Iterable it = conn.list(); // invokes list()
while(it.hasNext())
{
    Iterator i = it.next();
    while(i.hasNext())
      i.next();
}


which invokes list() no matter what.

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Offline ryanm

Senior Devvie


Projects: 1
Exp: 15 years


Used to be bleb


« Reply #1 - Posted 2007-03-02 16:02:35 »

That is a bit naughty. looks like the Eclipse compiler is being a tad aggressive about dead-code removal.
Does the sun compiler do the same?
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