Why would you use the ternary operator without assigning a value for the "true" condition?
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by RickNotFred
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Published on 2010-05-10T20:32:43Z
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2010/05/10
20:44 UTC
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|android-emulator
In the Android open-source qemu code I ran across this line of code:
machine->max_cpus = machine->max_cpus ?: 1; /* Default to UP */
It this just a confusing way of saying:
if (machine->max_cpus) {
; //do nothing
} else {
machine->max_cpus = 1;
}
If so, wouldn't it be clearer as:
if (machine->max_cpus == 0) machine->max_cpus = 1;
Interestingly, this compiles and works fine with gcc, but doesn't compile on http://www.comeaucomputing.com/tryitout/ .
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