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it is hard to judge get() success or not? #23

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m2mer opened this issue Apr 28, 2018 · 2 comments
Open

it is hard to judge get() success or not? #23

m2mer opened this issue Apr 28, 2018 · 2 comments

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@m2mer
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m2mer commented Apr 28, 2018

template
T LinkedList::get(int index){
ListNode *tmp = getNode(index);

return (tmp ? tmp->data : T());

}
no matter success or not, an instance of T is returned, so how to judge?
@RyanAveryBSU
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I'm confused. If there is no data, a new object is malloc'd and returned? or what is going on here...

@CAHEK7
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CAHEK7 commented Jun 13, 2019

If there is no data, a new object of type T is default-constructed and returned.
For simple types like int\char it won't allocate memory, just put zero value into some register and return.

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@CAHEK7 @m2mer @RyanAveryBSU