Re: Logical and - second operator evaluated?
Re: Logical and - second operator evaluated?
- Subject: Re: Logical and - second operator evaluated?
- From: Clark Cox <email@hidden>
- Date: Sun, 1 Mar 2009 12:34:41 -0800
On Sun, Mar 1, 2009 at 12:06 PM, Martijn van Exel <email@hidden> wrote:
> Hi devs,
>
> I can't seem to get away with
> if(timer!=nil && [timer isValid]) [timer invalidate];
> if the timer object does not exist.
> I'm not used to the second operator of the && even being evaluated if the
> first one evaluates false (Java, .NET). This is not the case in (Obj)C?
No, just as in C (and C++, when operator overloading isn't involved),
the second operand to the && operator is never evaluated if the first
evaluates to zero. What, exactly, is going wrong?
--
Clark S. Cox III
email@hidden
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